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Linux 4.16-rc2 

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Merge tag 'v4.16-rc2' into x86/platform, to pick up fixes

Signed-off-by: Ingo Molnar <mingo@kernel.org>
This commit is contained in:
Ingo Molnar 2018-02-23 08:20:18 +01:00
parent a66b86f002 91ab883eb2
commit 24e8db62c1
165 changed files with 2883 additions and 1749 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

39
Documentation/ABI/testing/sysfs-devices-platform-dock Normal file
View File

@ -0,0 +1,39 @@
What: /sys/devices/platform/dock.N/docked
Date: Dec, 2006
KernelVersion: 2.6.19
Contact: linux-acpi@vger.kernel.org
Description:
(RO) Value 1 or 0 indicates whether the software believes the
laptop is docked in a docking station.
What: /sys/devices/platform/dock.N/undock
Date: Dec, 2006
KernelVersion: 2.6.19
Contact: linux-acpi@vger.kernel.org
Description:
(WO) Writing to this file causes the software to initiate an
undock request to the firmware.
What: /sys/devices/platform/dock.N/uid
Date: Feb, 2007
KernelVersion: v2.6.21
Contact: linux-acpi@vger.kernel.org
Description:
(RO) Displays the docking station the laptop is docked to.
What: /sys/devices/platform/dock.N/flags
Date: May, 2007
KernelVersion: v2.6.21
Contact: linux-acpi@vger.kernel.org
Description:
(RO) Show dock station flags, useful for checking if undock
request has been made by the user (from the immediate_undock
option).
What: /sys/devices/platform/dock.N/type
Date: Aug, 2008
KernelVersion: v2.6.27
Contact: linux-acpi@vger.kernel.org
Description:
(RO) Display the dock station type- dock_station, ata_bay or
battery_bay.

77
Documentation/ABI/testing/sysfs-devices-system-cpu
View File

@ -108,6 +108,8 @@ Description: CPU topology files that describe a logical CPU's relationship
What: /sys/devices/system/cpu/cpuidle/current_driver
/sys/devices/system/cpu/cpuidle/current_governer_ro
/sys/devices/system/cpu/cpuidle/available_governors
/sys/devices/system/cpu/cpuidle/current_governor
Date: September 2007
Contact: Linux kernel mailing list <linux-kernel@vger.kernel.org>
Description: Discover cpuidle policy and mechanism
@ -119,13 +121,84 @@ Description: Discover cpuidle policy and mechanism
Idle policy (governor) is differentiated from idle mechanism
(driver)
current_driver: displays current idle mechanism
current_driver: (RO) displays current idle mechanism
current_governor_ro: displays current idle policy
current_governor_ro: (RO) displays current idle policy
With the cpuidle_sysfs_switch boot option enabled (meant for
developer testing), the following three attributes are visible
instead:
current_driver: same as described above
available_governors: (RO) displays a space separated list of
available governors
current_governor: (RW) displays current idle policy. Users can
switch the governor at runtime by writing to this file.
See files in Documentation/cpuidle/ for more information.
What: /sys/devices/system/cpu/cpuX/cpuidle/stateN/name
/sys/devices/system/cpu/cpuX/cpuidle/stateN/latency
/sys/devices/system/cpu/cpuX/cpuidle/stateN/power
/sys/devices/system/cpu/cpuX/cpuidle/stateN/time
/sys/devices/system/cpu/cpuX/cpuidle/stateN/usage
Date: September 2007
KernelVersion: v2.6.24
Contact: Linux power management list <linux-pm@vger.kernel.org>
Description:
The directory /sys/devices/system/cpu/cpuX/cpuidle contains per
logical CPU specific cpuidle information for each online cpu X.
The processor idle states which are available for use have the
following attributes:
name: (RO) Name of the idle state (string).
latency: (RO) The latency to exit out of this idle state (in
microseconds).
power: (RO) The power consumed while in this idle state (in
milliwatts).
time: (RO) The total time spent in this idle state (in microseconds).
usage: (RO) Number of times this state was entered (a count).
What: /sys/devices/system/cpu/cpuX/cpuidle/stateN/desc
Date: February 2008
KernelVersion: v2.6.25
Contact: Linux power management list <linux-pm@vger.kernel.org>
Description:
(RO) A small description about the idle state (string).
What: /sys/devices/system/cpu/cpuX/cpuidle/stateN/disable
Date: March 2012
KernelVersion: v3.10
Contact: Linux power management list <linux-pm@vger.kernel.org>
Description:
(RW) Option to disable this idle state (bool). The behavior and
the effect of the disable variable depends on the implementation
of a particular governor. In the ladder governor, for example,
it is not coherent, i.e. if one is disabling a light state, then
all deeper states are disabled as well, but the disable variable
does not reflect it. Likewise, if one enables a deep state but a
lighter state still is disabled, then this has no effect.
What: /sys/devices/system/cpu/cpuX/cpuidle/stateN/residency
Date: March 2014
KernelVersion: v3.15
Contact: Linux power management list <linux-pm@vger.kernel.org>
Description:
(RO) Display the target residency i.e. the minimum amount of
time (in microseconds) this cpu should spend in this idle state
to make the transition worth the effort.
What: /sys/devices/system/cpu/cpu#/cpufreq/*
Date: pre-git history
Contact: linux-pm@vger.kernel.org

40
Documentation/ABI/testing/sysfs-platform-dptf Normal file
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@ -0,0 +1,40 @@
What: /sys/bus/platform/devices/INT3407:00/dptf_power/charger_type
Date: Jul, 2016
KernelVersion: v4.10
Contact: linux-acpi@vger.kernel.org
Description:
(RO) The charger type - Traditional, Hybrid or NVDC.
What: /sys/bus/platform/devices/INT3407:00/dptf_power/adapter_rating_mw
Date: Jul, 2016
KernelVersion: v4.10
Contact: linux-acpi@vger.kernel.org
Description:
(RO) Adapter rating in milliwatts (the maximum Adapter power).
Must be 0 if no AC Adaptor is plugged in.
What: /sys/bus/platform/devices/INT3407:00/dptf_power/max_platform_power_mw
Date: Jul, 2016
KernelVersion: v4.10
Contact: linux-acpi@vger.kernel.org
Description:
(RO) Maximum platform power that can be supported by the battery
in milliwatts.
What: /sys/bus/platform/devices/INT3407:00/dptf_power/platform_power_source
Date: Jul, 2016
KernelVersion: v4.10
Contact: linux-acpi@vger.kernel.org
Description:
(RO) Display the platform power source
0x00 = DC
0x01 = AC
0x02 = USB
0x03 = Wireless Charger
What: /sys/bus/platform/devices/INT3407:00/dptf_power/battery_steady_power
Date: Jul, 2016
KernelVersion: v4.10
Contact: linux-acpi@vger.kernel.org
Description:
(RO) The maximum sustained power for battery in milliwatts.

7
Documentation/atomic_bitops.txt
View File

@ -58,7 +58,12 @@ Like with atomic_t, the rule of thumb is:
- RMW operations that have a return value are fully ordered.
Except for test_and_set_bit_lock() which has ACQUIRE semantics and
- RMW operations that are conditional are unordered on FAILURE,
otherwise the above rules apply. In the case of test_and_{}_bit() operations,
if the bit in memory is unchanged by the operation then it is deemed to have
failed.
Except for a successful test_and_set_bit_lock() which has ACQUIRE semantics and
clear_bit_unlock() which has RELEASE semantics.
Since a platform only has a single means of achieving atomic operations

62
Documentation/features/sched/membarrier-sync-core/arch-support.txt Normal file
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@ -0,0 +1,62 @@
#
# Feature name: membarrier-sync-core
# Kconfig: ARCH_HAS_MEMBARRIER_SYNC_CORE
# description: arch supports core serializing membarrier
#
# Architecture requirements
#
# * arm64
#
# Rely on eret context synchronization when returning from IPI handler, and
# when returning to user-space.
#
# * x86
#
# x86-32 uses IRET as return from interrupt, which takes care of the IPI.
# However, it uses both IRET and SYSEXIT to go back to user-space. The IRET
# instruction is core serializing, but not SYSEXIT.
#
# x86-64 uses IRET as return from interrupt, which takes care of the IPI.
# However, it can return to user-space through either SYSRETL (compat code),
# SYSRETQ, or IRET.
#
# Given that neither SYSRET{L,Q}, nor SYSEXIT, are core serializing, we rely
# instead on write_cr3() performed by switch_mm() to provide core serialization
# after changing the current mm, and deal with the special case of kthread ->
# uthread (temporarily keeping current mm into active_mm) by issuing a
# sync_core_before_usermode() in that specific case.
#
-----------------------
| arch |status|
-----------------------
| alpha: | TODO |
| arc: | TODO |
| arm: | TODO |
| arm64: | ok |
| blackfin: | TODO |
| c6x: | TODO |
| cris: | TODO |
| frv: | TODO |
| h8300: | TODO |
| hexagon: | TODO |
| ia64: | TODO |
| m32r: | TODO |
| m68k: | TODO |
| metag: | TODO |
| microblaze: | TODO |
| mips: | TODO |
| mn10300: | TODO |
| nios2: | TODO |
| openrisc: | TODO |
| parisc: | TODO |
| powerpc: | TODO |
| s390: | TODO |
| score: | TODO |
| sh: | TODO |
| sparc: | TODO |
| tile: | TODO |
| um: | TODO |
| unicore32: | TODO |
| x86: | ok |
| xtensa: | TODO |
-----------------------

49
Documentation/locking/mutex-design.txt
View File

@ -21,37 +21,23 @@ Implementation
--------------
Mutexes are represented by 'struct mutex', defined in include/linux/mutex.h
and implemented in kernel/locking/mutex.c. These locks use a three
state atomic counter (->count) to represent the different possible
transitions that can occur during the lifetime of a lock:
1: unlocked
0: locked, no waiters
negative: locked, with potential waiters
In its most basic form it also includes a wait-queue and a spinlock
that serializes access to it. CONFIG_SMP systems can also include
a pointer to the lock task owner (->owner) as well as a spinner MCS
lock (->osq), both described below in (ii).
and implemented in kernel/locking/mutex.c. These locks use an atomic variable
(->owner) to keep track of the lock state during its lifetime. Field owner
actually contains 'struct task_struct *' to the current lock owner and it is
therefore NULL if not currently owned. Since task_struct pointers are aligned
at at least L1_CACHE_BYTES, low bits (3) are used to store extra state (e.g.,
if waiter list is non-empty). In its most basic form it also includes a
wait-queue and a spinlock that serializes access to it. Furthermore,
CONFIG_MUTEX_SPIN_ON_OWNER=y systems use a spinner MCS lock (->osq), described
below in (ii).
When acquiring a mutex, there are three possible paths that can be
taken, depending on the state of the lock:
(i) fastpath: tries to atomically acquire the lock by decrementing the
counter. If it was already taken by another task it goes to the next
possible path. This logic is architecture specific. On x86-64, the
locking fastpath is 2 instructions:
0000000000000e10 <mutex_lock>:
e21: f0 ff 0b lock decl (%rbx)
e24: 79 08 jns e2e <mutex_lock+0x1e>
the unlocking fastpath is equally tight:
0000000000000bc0 <mutex_unlock>:
bc8: f0 ff 07 lock incl (%rdi)
bcb: 7f 0a jg bd7 <mutex_unlock+0x17>
(i) fastpath: tries to atomically acquire the lock by cmpxchg()ing the owner with
the current task. This only works in the uncontended case (cmpxchg() checks
against 0UL, so all 3 state bits above have to be 0). If the lock is
contended it goes to the next possible path.
(ii) midpath: aka optimistic spinning, tries to spin for acquisition
while the lock owner is running and there are no other tasks ready
@ -143,11 +129,10 @@ Test if the mutex is taken:
Disadvantages
-------------
Unlike its original design and purpose, 'struct mutex' is larger than
most locks in the kernel. E.g: on x86-64 it is 40 bytes, almost twice
as large as 'struct semaphore' (24 bytes) and tied, along with rwsems,
for the largest lock in the kernel. Larger structure sizes mean more
CPU cache and memory footprint.
Unlike its original design and purpose, 'struct mutex' is among the largest
locks in the kernel. E.g: on x86-64 it is 32 bytes, where 'struct semaphore'
is 24 bytes and rw_semaphore is 40 bytes. Larger structure sizes mean more CPU
cache and memory footprint.
When to use mutexes
-------------------

2
Makefile
View File

@ -2,7 +2,7 @@
VERSION = 4
PATCHLEVEL = 16
SUBLEVEL = 0
EXTRAVERSION = -rc1
EXTRAVERSION = -rc2
NAME = Fearless Coyote
# *DOCUMENTATION*

2
arch/arm64/include/asm/cputype.h
View File

@ -20,7 +20,7 @@
#define MPIDR_UP_BITMASK (0x1 << 30)
#define MPIDR_MT_BITMASK (0x1 << 24)
#define MPIDR_HWID_BITMASK 0xff00ffffff
#define MPIDR_HWID_BITMASK 0xff00ffffffUL
#define MPIDR_LEVEL_BITS_SHIFT 3
#define MPIDR_LEVEL_BITS (1 << MPIDR_LEVEL_BITS_SHIFT)

2
arch/arm64/include/asm/hugetlb.h
View File

@ -22,7 +22,7 @@
static inline pte_t huge_ptep_get(pte_t *ptep)
{
return *ptep;
return READ_ONCE(*ptep);
}

26
arch/arm64/include/asm/kvm_mmu.h
View File

@ -185,42 +185,42 @@ static inline pmd_t kvm_s2pmd_mkexec(pmd_t pmd)
return pmd;
}
static inline void kvm_set_s2pte_readonly(pte_t *pte)
static inline void kvm_set_s2pte_readonly(pte_t *ptep)
{
pteval_t old_pteval, pteval;
pteval = READ_ONCE(pte_val(*pte));
pteval = READ_ONCE(pte_val(*ptep));
do {
old_pteval = pteval;
pteval &= ~PTE_S2_RDWR;
pteval |= PTE_S2_RDONLY;
pteval = cmpxchg_relaxed(&pte_val(*pte), old_pteval, pteval);
pteval = cmpxchg_relaxed(&pte_val(*ptep), old_pteval, pteval);
} while (pteval != old_pteval);
}
static inline bool kvm_s2pte_readonly(pte_t *pte)
static inline bool kvm_s2pte_readonly(pte_t *ptep)
{
return (pte_val(*pte) & PTE_S2_RDWR) == PTE_S2_RDONLY;
return (READ_ONCE(pte_val(*ptep)) & PTE_S2_RDWR) == PTE_S2_RDONLY;
}
static inline bool kvm_s2pte_exec(pte_t *pte)
static inline bool kvm_s2pte_exec(pte_t *ptep)
{
return !(pte_val(*pte) & PTE_S2_XN);
return !(READ_ONCE(pte_val(*ptep)) & PTE_S2_XN);
}
static inline void kvm_set_s2pmd_readonly(pmd_t *pmd)
static inline void kvm_set_s2pmd_readonly(pmd_t *pmdp)
{
kvm_set_s2pte_readonly((pte_t *)pmd);
kvm_set_s2pte_readonly((pte_t *)pmdp);
}
static inline bool kvm_s2pmd_readonly(pmd_t *pmd)
static inline bool kvm_s2pmd_readonly(pmd_t *pmdp)
{
return kvm_s2pte_readonly((pte_t *)pmd);
return kvm_s2pte_readonly((pte_t *)pmdp);
}
static inline bool kvm_s2pmd_exec(pmd_t *pmd)
static inline bool kvm_s2pmd_exec(pmd_t *pmdp)
{
return !(pmd_val(*pmd) & PMD_S2_XN);
return !(READ_ONCE(pmd_val(*pmdp)) & PMD_S2_XN);
}
static inline bool kvm_page_empty(void *ptr)

4
arch/arm64/include/asm/mmu_context.h
View File

@ -141,13 +141,13 @@ static inline void cpu_install_idmap(void)
* Atomically replaces the active TTBR1_EL1 PGD with a new VA-compatible PGD,
* avoiding the possibility of conflicting TLB entries being allocated.
*/
static inline void cpu_replace_ttbr1(pgd_t *pgd)
static inline void cpu_replace_ttbr1(pgd_t *pgdp)
{
typedef void (ttbr_replace_func)(phys_addr_t);
extern ttbr_replace_func idmap_cpu_replace_ttbr1;
ttbr_replace_func *replace_phys;
phys_addr_t pgd_phys = virt_to_phys(pgd);
phys_addr_t pgd_phys = virt_to_phys(pgdp);
replace_phys = (void *)__pa_symbol(idmap_cpu_replace_ttbr1);

44
arch/arm64/include/asm/pgalloc.h
View File

@ -36,23 +36,23 @@ static inline pmd_t *pmd_alloc_one(struct mm_struct *mm, unsigned long addr)
return (pmd_t *)__get_free_page(PGALLOC_GFP);
}
static inline void pmd_free(struct mm_struct *mm, pmd_t *pmd)
static inline void pmd_free(struct mm_struct *mm, pmd_t *pmdp)
{
BUG_ON((unsigned long)pmd & (PAGE_SIZE-1));
free_page((unsigned long)pmd);
BUG_ON((unsigned long)pmdp & (PAGE_SIZE-1));
free_page((unsigned long)pmdp);
}
static inline void __pud_populate(pud_t *pud, phys_addr_t pmd, pudval_t prot)
static inline void __pud_populate(pud_t *pudp, phys_addr_t pmdp, pudval_t prot)
{
set_pud(pud, __pud(__phys_to_pud_val(pmd) | prot));
set_pud(pudp, __pud(__phys_to_pud_val(pmdp) | prot));
}
static inline void pud_populate(struct mm_struct *mm, pud_t *pud, pmd_t *pmd)
static inline void pud_populate(struct mm_struct *mm, pud_t *pudp, pmd_t *pmdp)
{
__pud_populate(pud, __pa(pmd), PMD_TYPE_TABLE);
__pud_populate(pudp, __pa(pmdp), PMD_TYPE_TABLE);
}
#else
static inline void __pud_populate(pud_t *pud, phys_addr_t pmd, pudval_t prot)
static inline void __pud_populate(pud_t *pudp, phys_addr_t pmdp, pudval_t prot)
{
BUILD_BUG();
}
@ -65,30 +65,30 @@ static inline pud_t *pud_alloc_one(struct mm_struct *mm, unsigned long addr)
return (pud_t *)__get_free_page(PGALLOC_GFP);
}
static inline void pud_free(struct mm_struct *mm, pud_t *pud)
static inline void pud_free(struct mm_struct *mm, pud_t *pudp)
{
BUG_ON((unsigned long)pud & (PAGE_SIZE-1));
free_page((unsigned long)pud);
BUG_ON((unsigned long)pudp & (PAGE_SIZE-1));
free_page((unsigned long)pudp);
}
static inline void __pgd_populate(pgd_t *pgdp, phys_addr_t pud, pgdval_t prot)
static inline void __pgd_populate(pgd_t *pgdp, phys_addr_t pudp, pgdval_t prot)
{
set_pgd(pgdp, __pgd(__phys_to_pgd_val(pud) | prot));
set_pgd(pgdp, __pgd(__phys_to_pgd_val(pudp) | prot));
}
static inline void pgd_populate(struct mm_struct *mm, pgd_t *pgd, pud_t *pud)
static inline void pgd_populate(struct mm_struct *mm, pgd_t *pgdp, pud_t *pudp)
{
__pgd_populate(pgd, __pa(pud), PUD_TYPE_TABLE);
__pgd_populate(pgdp, __pa(pudp), PUD_TYPE_TABLE);
}
#else
static inline void __pgd_populate(pgd_t *pgdp, phys_addr_t pud, pgdval_t prot)
static inline void __pgd_populate(pgd_t *pgdp, phys_addr_t pudp, pgdval_t prot)
{
BUILD_BUG();
}
#endif /* CONFIG_PGTABLE_LEVELS > 3 */
extern pgd_t *pgd_alloc(struct mm_struct *mm);
extern void pgd_free(struct mm_struct *mm, pgd_t *pgd);
extern void pgd_free(struct mm_struct *mm, pgd_t *pgdp);
static inline pte_t *
pte_alloc_one_kernel(struct mm_struct *mm, unsigned long addr)
@ -114,10 +114,10 @@ pte_alloc_one(struct mm_struct *mm, unsigned long addr)
/*
* Free a PTE table.
*/
static inline void pte_free_kernel(struct mm_struct *mm, pte_t *pte)
static inline void pte_free_kernel(struct mm_struct *mm, pte_t *ptep)
{
if (pte)
free_page((unsigned long)pte);
if (ptep)
free_page((unsigned long)ptep);
}
static inline void pte_free(struct mm_struct *mm, pgtable_t pte)
@ -126,10 +126,10 @@ static inline void pte_free(struct mm_struct *mm, pgtable_t pte)
__free_page(pte);
}
static inline void __pmd_populate(pmd_t *pmdp, phys_addr_t pte,
static inline void __pmd_populate(pmd_t *pmdp, phys_addr_t ptep,
pmdval_t prot)
{
set_pmd(pmdp, __pmd(__phys_to_pmd_val(pte) | prot));
set_pmd(pmdp, __pmd(__phys_to_pmd_val(ptep) | prot));
}
/*

23
arch/arm64/include/asm/pgtable.h
View File

@ -218,7 +218,7 @@ static inline pmd_t pmd_mkcont(pmd_t pmd)
static inline void set_pte(pte_t *ptep, pte_t pte)
{
*ptep = pte;
WRITE_ONCE(*ptep, pte);
/*
* Only if the new pte is valid and kernel, otherwise TLB maintenance
@ -250,6 +250,8 @@ extern void __sync_icache_dcache(pte_t pteval, unsigned long addr);
static inline void set_pte_at(struct mm_struct *mm, unsigned long addr,
pte_t *ptep, pte_t pte)
{
pte_t old_pte;
if (pte_present(pte) && pte_user_exec(pte) && !pte_special(pte))
__sync_icache_dcache(pte, addr);
@ -258,14 +260,15 @@ static inline void set_pte_at(struct mm_struct *mm, unsigned long addr,
* hardware updates of the pte (ptep_set_access_flags safely changes
* valid ptes without going through an invalid entry).
*/
if (IS_ENABLED(CONFIG_DEBUG_VM) && pte_valid(*ptep) && pte_valid(pte) &&
old_pte = READ_ONCE(*ptep);
if (IS_ENABLED(CONFIG_DEBUG_VM) && pte_valid(old_pte) && pte_valid(pte) &&
(mm == current->active_mm || atomic_read(&mm->mm_users) > 1)) {
VM_WARN_ONCE(!pte_young(pte),
"%s: racy access flag clearing: 0x%016llx -> 0x%016llx",
__func__, pte_val(*ptep), pte_val(pte));
VM_WARN_ONCE(pte_write(*ptep) && !pte_dirty(pte),
__func__, pte_val(old_pte), pte_val(pte));
VM_WARN_ONCE(pte_write(old_pte) && !pte_dirty(pte),
"%s: racy dirty state clearing: 0x%016llx -> 0x%016llx",
__func__, pte_val(*ptep), pte_val(pte));
__func__, pte_val(old_pte), pte_val(pte));
}
set_pte(ptep, pte);
@ -431,7 +434,7 @@ extern pgprot_t phys_mem_access_prot(struct file *file, unsigned long pfn,
static inline void set_pmd(pmd_t *pmdp, pmd_t pmd)
{
*pmdp = pmd;
WRITE_ONCE(*pmdp, pmd);
dsb(ishst);
isb();
}
@ -482,7 +485,7 @@ static inline phys_addr_t pmd_page_paddr(pmd_t pmd)
static inline void set_pud(pud_t *pudp, pud_t pud)
{
*pudp = pud;
WRITE_ONCE(*pudp, pud);
dsb(ishst);
isb();
}
@ -500,7 +503,7 @@ static inline phys_addr_t pud_page_paddr(pud_t pud)
/* Find an entry in the second-level page table. */
#define pmd_index(addr) (((addr) >> PMD_SHIFT) & (PTRS_PER_PMD - 1))
#define pmd_offset_phys(dir, addr) (pud_page_paddr(*(dir)) + pmd_index(addr) * sizeof(pmd_t))
#define pmd_offset_phys(dir, addr) (pud_page_paddr(READ_ONCE(*(dir))) + pmd_index(addr) * sizeof(pmd_t))
#define pmd_offset(dir, addr) ((pmd_t *)__va(pmd_offset_phys((dir), (addr))))
#define pmd_set_fixmap(addr) ((pmd_t *)set_fixmap_offset(FIX_PMD, addr))
@ -535,7 +538,7 @@ static inline phys_addr_t pud_page_paddr(pud_t pud)
static inline void set_pgd(pgd_t *pgdp, pgd_t pgd)
{
*pgdp = pgd;
WRITE_ONCE(*pgdp, pgd);
dsb(ishst);
}
@ -552,7 +555,7 @@ static inline phys_addr_t pgd_page_paddr(pgd_t pgd)
/* Find an entry in the frst-level page table. */
#define pud_index(addr) (((addr) >> PUD_SHIFT) & (PTRS_PER_PUD - 1))
#define pud_offset_phys(dir, addr) (pgd_page_paddr(*(dir)) + pud_index(addr) * sizeof(pud_t))
#define pud_offset_phys(dir, addr) (pgd_page_paddr(READ_ONCE(*(dir))) + pud_index(addr) * sizeof(pud_t))
#define pud_offset(dir, addr) ((pud_t *)__va(pud_offset_phys((dir), (addr))))
#define pud_set_fixmap(addr) ((pud_t *)set_fixmap_offset(FIX_PUD, addr))

9
arch/arm64/kernel/cpu_errata.c
View File

@ -406,6 +406,15 @@ const struct arm64_cpu_capabilities arm64_errata[] = {
.capability = ARM64_HARDEN_BP_POST_GUEST_EXIT,
MIDR_ALL_VERSIONS(MIDR_QCOM_FALKOR_V1),
},
{
.capability = ARM64_HARDEN_BRANCH_PREDICTOR,
MIDR_ALL_VERSIONS(MIDR_QCOM_FALKOR),
.enable = qcom_enable_link_stack_sanitization,
},
{
.capability = ARM64_HARDEN_BP_POST_GUEST_EXIT,
MIDR_ALL_VERSIONS(MIDR_QCOM_FALKOR),
},
{
.capability = ARM64_HARDEN_BRANCH_PREDICTOR,
MIDR_ALL_VERSIONS(MIDR_BRCM_VULCAN),

2
arch/arm64/kernel/efi.c
View File

@ -90,7 +90,7 @@ static int __init set_permissions(pte_t *ptep, pgtable_t token,
unsigned long addr, void *data)
{
efi_memory_desc_t *md = data;
pte_t pte = *ptep;
pte_t pte = READ_ONCE(*ptep);
if (md->attribute & EFI_MEMORY_RO)
pte = set_pte_bit(pte, __pgprot(PTE_RDONLY));

148
arch/arm64/kernel/hibernate.c
View File

@ -202,10 +202,10 @@ static int create_safe_exec_page(void *src_start, size_t length,
gfp_t mask)
{
int rc = 0;
pgd_t *pgd;
pud_t *pud;
pmd_t *pmd;
pte_t *pte;
pgd_t *pgdp;
pud_t *pudp;
pmd_t *pmdp;
pte_t *ptep;
unsigned long dst = (unsigned long)allocator(mask);
if (!dst) {
@ -216,38 +216,38 @@ static int create_safe_exec_page(void *src_start, size_t length,
memcpy((void *)dst, src_start, length);
flush_icache_range(dst, dst + length);
pgd = pgd_offset_raw(allocator(mask), dst_addr);
if (pgd_none(*pgd)) {
pud = allocator(mask);
if (!pud) {
pgdp = pgd_offset_raw(allocator(mask), dst_addr);
if (pgd_none(READ_ONCE(*pgdp))) {
pudp = allocator(mask);
if (!pudp) {
rc = -ENOMEM;
goto out;
}
pgd_populate(&init_mm, pgd, pud);
pgd_populate(&init_mm, pgdp, pudp);
}
pud = pud_offset(pgd, dst_addr);
if (pud_none(*pud)) {
pmd = allocator(mask);
if (!pmd) {
pudp = pud_offset(pgdp, dst_addr);
if (pud_none(READ_ONCE(*pudp))) {
pmdp = allocator(mask);
if (!pmdp) {
rc = -ENOMEM;
goto out;
}
pud_populate(&init_mm, pud, pmd);
pud_populate(&init_mm, pudp, pmdp);
}
pmd = pmd_offset(pud, dst_addr);
if (pmd_none(*pmd)) {
pte = allocator(mask);
if (!pte) {
pmdp = pmd_offset(pudp, dst_addr);
if (pmd_none(READ_ONCE(*pmdp))) {
ptep = allocator(mask);
if (!ptep) {
rc = -ENOMEM;
goto out;
}
pmd_populate_kernel(&init_mm, pmd, pte);
pmd_populate_kernel(&init_mm, pmdp, ptep);
}
pte = pte_offset_kernel(pmd, dst_addr);
set_pte(pte, pfn_pte(virt_to_pfn(dst), PAGE_KERNEL_EXEC));
ptep = pte_offset_kernel(pmdp, dst_addr);
set_pte(ptep, pfn_pte(virt_to_pfn(dst), PAGE_KERNEL_EXEC));
/*
* Load our new page tables. A strict BBM approach requires that we
@ -263,7 +263,7 @@ static int create_safe_exec_page(void *src_start, size_t length,
*/
cpu_set_reserved_ttbr0();
local_flush_tlb_all();
write_sysreg(phys_to_ttbr(virt_to_phys(pgd)), ttbr0_el1);
write_sysreg(phys_to_ttbr(virt_to_phys(pgdp)), ttbr0_el1);
isb();
*phys_dst_addr = virt_to_phys((void *)dst);
@ -320,9 +320,9 @@ int swsusp_arch_suspend(void)
return ret;
}
static void _copy_pte(pte_t *dst_pte, pte_t *src_pte, unsigned long addr)
static void _copy_pte(pte_t *dst_ptep, pte_t *src_ptep, unsigned long addr)
{
pte_t pte = *src_pte;
pte_t pte = READ_ONCE(*src_ptep);
if (pte_valid(pte)) {
/*
@ -330,7 +330,7 @@ static void _copy_pte(pte_t *dst_pte, pte_t *src_pte, unsigned long addr)
* read only (code, rodata). Clear the RDONLY bit from
* the temporary mappings we use during restore.
*/
set_pte(dst_pte, pte_mkwrite(pte));
set_pte(dst_ptep, pte_mkwrite(pte));
} else if (debug_pagealloc_enabled() && !pte_none(pte)) {
/*
* debug_pagealloc will removed the PTE_VALID bit if
@ -343,112 +343,116 @@ static void _copy_pte(pte_t *dst_pte, pte_t *src_pte, unsigned long addr)
*/
BUG_ON(!pfn_valid(pte_pfn(pte)));
set_pte(dst_pte, pte_mkpresent(pte_mkwrite(pte)));
set_pte(dst_ptep, pte_mkpresent(pte_mkwrite(pte)));
}
}
static int copy_pte(pmd_t *dst_pmd, pmd_t *src_pmd, unsigned long start,
static int copy_pte(pmd_t *dst_pmdp, pmd_t *src_pmdp, unsigned long start,
unsigned long end)
{
pte_t *src_pte;
pte_t *dst_pte;
pte_t *src_ptep;
pte_t *dst_ptep;
unsigned long addr = start;
dst_pte = (pte_t *)get_safe_page(GFP_ATOMIC);
if (!dst_pte)
dst_ptep = (pte_t *)get_safe_page(GFP_ATOMIC);
if (!dst_ptep)
return -ENOMEM;
pmd_populate_kernel(&init_mm, dst_pmd, dst_pte);
dst_pte = pte_offset_kernel(dst_pmd, start);
pmd_populate_kernel(&init_mm, dst_pmdp, dst_ptep);
dst_ptep = pte_offset_kernel(dst_pmdp, start);
src_pte = pte_offset_kernel(src_pmd, start);
src_ptep = pte_offset_kernel(src_pmdp, start);
do {
_copy_pte(dst_pte, src_pte, addr);
} while (dst_pte++, src_pte++, addr += PAGE_SIZE, addr != end);
_copy_pte(dst_ptep, src_ptep, addr);
} while (dst_ptep++, src_ptep++, addr += PAGE_SIZE, addr != end);
return 0;
}
static int copy_pmd(pud_t *dst_pud, pud_t *src_pud, unsigned long start,
static int copy_pmd(pud_t *dst_pudp, pud_t *src_pudp, unsigned long start,
unsigned long end)
{
pmd_t *src_pmd;
pmd_t *dst_pmd;
pmd_t *src_pmdp;
pmd_t *dst_pmdp;
unsigned long next;
unsigned long addr = start;
if (pud_none(*dst_pud)) {
dst_pmd = (pmd_t *)get_safe_page(GFP_ATOMIC);
if (!dst_pmd)
if (pud_none(READ_ONCE(*dst_pudp))) {
dst_pmdp = (pmd_t *)get_safe_page(GFP_ATOMIC);
if (!dst_pmdp)
return -ENOMEM;
pud_populate(&init_mm, dst_pud, dst_pmd);
pud_populate(&init_mm, dst_pudp, dst_pmdp);
}
dst_pmd = pmd_offset(dst_pud, start);
dst_pmdp = pmd_offset(dst_pudp, start);
src_pmd = pmd_offset(src_pud, start);
src_pmdp = pmd_offset(src_pudp, start);
do {
pmd_t pmd = READ_ONCE(*src_pmdp);
next = pmd_addr_end(addr, end);
if (pmd_none(*src_pmd))
if (pmd_none(pmd))
continue;
if (pmd_table(*src_pmd)) {
if (copy_pte(dst_pmd, src_pmd, addr, next))
if (pmd_table(pmd)) {
if (copy_pte(dst_pmdp, src_pmdp, addr, next))
return -ENOMEM;
} else {
set_pmd(dst_pmd,
__pmd(pmd_val(*src_pmd) & ~PMD_SECT_RDONLY));
set_pmd(dst_pmdp,
__pmd(pmd_val(pmd) & ~PMD_SECT_RDONLY));
}
} while (dst_pmd++, src_pmd++, addr = next, addr != end);
} while (dst_pmdp++, src_pmdp++, addr = next, addr != end);
return 0;
}
static int copy_pud(pgd_t *dst_pgd, pgd_t *src_pgd, unsigned long start,
static int copy_pud(pgd_t *dst_pgdp, pgd_t *src_pgdp, unsigned long start,
unsigned long end)
{
pud_t *dst_pud;
pud_t *src_pud;
pud_t *dst_pudp;
pud_t *src_pudp;
unsigned long next;
unsigned long addr = start;
if (pgd_none(*dst_pgd)) {
dst_pud = (pud_t *)get_safe_page(GFP_ATOMIC);
if (!dst_pud)
if (pgd_none(READ_ONCE(*dst_pgdp))) {
dst_pudp = (pud_t *)get_safe_page(GFP_ATOMIC);
if (!dst_pudp)
return -ENOMEM;
pgd_populate(&init_mm, dst_pgd, dst_pud);
pgd_populate(&init_mm, dst_pgdp, dst_pudp);
}
dst_pud = pud_offset(dst_pgd, start);
dst_pudp = pud_offset(dst_pgdp, start);
src_pud = pud_offset(src_pgd, start);
src_pudp = pud_offset(src_pgdp, start);
do {
pud_t pud = READ_ONCE(*src_pudp);
next = pud_addr_end(addr, end);
if (pud_none(*src_pud))
if (pud_none(pud))
continue;
if (pud_table(*(src_pud))) {
if (copy_pmd(dst_pud, src_pud, addr, next))
if (pud_table(pud)) {
if (copy_pmd(dst_pudp, src_pudp, addr, next))
return -ENOMEM;
} else {
set_pud(dst_pud,
__pud(pud_val(*src_pud) & ~PMD_SECT_RDONLY));
set_pud(dst_pudp,
__pud(pud_val(pud) & ~PMD_SECT_RDONLY));
}
} while (dst_pud++, src_pud++, addr = next, addr != end);
} while (dst_pudp++, src_pudp++, addr = next, addr != end);
return 0;
}
static int copy_page_tables(pgd_t *dst_pgd, unsigned long start,
static int copy_page_tables(pgd_t *dst_pgdp, unsigned long start,
unsigned long end)
{
unsigned long next;
unsigned long addr = start;
pgd_t *src_pgd = pgd_offset_k(start);
pgd_t *src_pgdp = pgd_offset_k(start);
dst_pgd = pgd_offset_raw(dst_pgd, start);
dst_pgdp = pgd_offset_raw(dst_pgdp, start);
do {
next = pgd_addr_end(addr, end);
if (pgd_none(*src_pgd))
if (pgd_none(READ_ONCE(*src_pgdp)))
continue;
if (copy_pud(dst_pgd, src_pgd, addr, next))
if (copy_pud(dst_pgdp, src_pgdp, addr, next))
return -ENOMEM;
} while (dst_pgd++, src_pgd++, addr = next, addr != end);
} while (dst_pgdp++, src_pgdp++, addr = next, addr != end);
return 0;
}

4
arch/arm64/kvm/hyp/switch.c
View File

@ -407,8 +407,10 @@ int __hyp_text __kvm_vcpu_run(struct kvm_vcpu *vcpu)
u32 midr = read_cpuid_id();
/* Apply BTAC predictors mitigation to all Falkor chips */
if ((midr & MIDR_CPU_MODEL_MASK) == MIDR_QCOM_FALKOR_V1)
if (((midr & MIDR_CPU_MODEL_MASK) == MIDR_QCOM_FALKOR) ||
((midr & MIDR_CPU_MODEL_MASK) == MIDR_QCOM_FALKOR_V1)) {
__qcom_hyp_sanitize_btac_predictors();
}
}
fp_enabled = __fpsimd_enabled();

54
arch/arm64/mm/dump.c
View File

@ -286,48 +286,52 @@ static void note_page(struct pg_state *st, unsigned long addr, unsigned level,
}
static void walk_pte(struct pg_state *st, pmd_t *pmd, unsigned long start)
static void walk_pte(struct pg_state *st, pmd_t *pmdp, unsigned long start)
{
pte_t *pte = pte_offset_kernel(pmd, 0UL);
pte_t *ptep = pte_offset_kernel(pmdp, 0UL);
unsigned long addr;
unsigned i;
for (i = 0; i < PTRS_PER_PTE; i++, pte++) {
for (i = 0; i < PTRS_PER_PTE; i++, ptep++) {
addr = start + i * PAGE_SIZE;
note_page(st, addr, 4, pte_val(*pte));
note_page(st, addr, 4, READ_ONCE(pte_val(*ptep)));
}
}
static void walk_pmd(struct pg_state *st, pud_t *pud, unsigned long start)
static void walk_pmd(struct pg_state *st, pud_t *pudp, unsigned long start)
{
pmd_t *pmd = pmd_offset(pud, 0UL);
pmd_t *pmdp = pmd_offset(pudp, 0UL);
unsigned long addr;
unsigned i;
for (i = 0; i < PTRS_PER_PMD; i++, pmd++) {
for (i = 0; i < PTRS_PER_PMD; i++, pmdp++) {
pmd_t pmd = READ_ONCE(*pmdp);
addr = start + i * PMD_SIZE;
if (pmd_none(*pmd) || pmd_sect(*pmd)) {
note_page(st, addr, 3, pmd_val(*pmd));
if (pmd_none(pmd) || pmd_sect(pmd)) {
note_page(st, addr, 3, pmd_val(pmd));
} else {
BUG_ON(pmd_bad(*pmd));
walk_pte(st, pmd, addr);
BUG_ON(pmd_bad(pmd));
walk_pte(st, pmdp, addr);
}
}
}
static void walk_pud(struct pg_state *st, pgd_t *pgd, unsigned long start)
static void walk_pud(struct pg_state *st, pgd_t *pgdp, unsigned long start)
{
pud_t *pud = pud_offset(pgd, 0UL);
pud_t *pudp = pud_offset(pgdp, 0UL);
unsigned long addr;
unsigned i;
for (i = 0; i < PTRS_PER_PUD; i++, pud++) {
for (i = 0; i < PTRS_PER_PUD; i++, pudp++) {
pud_t pud = READ_ONCE(*pudp);
addr = start + i * PUD_SIZE;
if (pud_none(*pud) || pud_sect(*pud)) {
note_page(st, addr, 2, pud_val(*pud));
if (pud_none(pud) || pud_sect(pud)) {
note_page(st, addr, 2, pud_val(pud));
} else {
BUG_ON(pud_bad(*pud));
walk_pmd(st, pud, addr);
BUG_ON(pud_bad(pud));
walk_pmd(st, pudp, addr);
}
}
}
@ -335,17 +339,19 @@ static void walk_pud(struct pg_state *st, pgd_t *pgd, unsigned long start)
static void walk_pgd(struct pg_state *st, struct mm_struct *mm,
unsigned long start)
{
pgd_t *pgd = pgd_offset(mm, 0UL);
pgd_t *pgdp = pgd_offset(mm, 0UL);
unsigned i;
unsigned long addr;
for (i = 0; i < PTRS_PER_PGD; i++, pgd++) {
for (i = 0; i < PTRS_PER_PGD; i++, pgdp++) {
pgd_t pgd = READ_ONCE(*pgdp);
addr = start + i * PGDIR_SIZE;
if (pgd_none(*pgd)) {
note_page(st, addr, 1, pgd_val(*pgd));
if (pgd_none(pgd)) {
note_page(st, addr, 1, pgd_val(pgd));
} else {
BUG_ON(pgd_bad(*pgd));
walk_pud(st, pgd, addr);
BUG_ON(pgd_bad(pgd));
walk_pud(st, pgdp, addr);
}
}
}

44
arch/arm64/mm/fault.c
View File

@ -130,7 +130,8 @@ static void mem_abort_decode(unsigned int esr)
void show_pte(unsigned long addr)
{
struct mm_struct *mm;
pgd_t *pgd;
pgd_t *pgdp;
pgd_t pgd;
if (addr < TASK_SIZE) {
/* TTBR0 */
@ -149,33 +150,37 @@ void show_pte(unsigned long addr)
return;
}
pr_alert("%s pgtable: %luk pages, %u-bit VAs, pgd = %p\n",
pr_alert("%s pgtable: %luk pages, %u-bit VAs, pgdp = %p\n",
mm == &init_mm ? "swapper" : "user", PAGE_SIZE / SZ_1K,
VA_BITS, mm->pgd);
pgd = pgd_offset(mm, addr);
pr_alert("[%016lx] *pgd=%016llx", addr, pgd_val(*pgd));
pgdp = pgd_offset(mm, addr);
pgd = READ_ONCE(*pgdp);
pr_alert("[%016lx] pgd=%016llx", addr, pgd_val(pgd));
do {
pud_t *pud;
pmd_t *pmd;
pte_t *pte;
pud_t *pudp, pud;
pmd_t *pmdp, pmd;
pte_t *ptep, pte;
if (pgd_none(*pgd) || pgd_bad(*pgd))
if (pgd_none(pgd) || pgd_bad(pgd))
break;
pud = pud_offset(pgd, addr);
pr_cont(", *pud=%016llx", pud_val(*pud));
if (pud_none(*pud) || pud_bad(*pud))
pudp = pud_offset(pgdp, addr);
pud = READ_ONCE(*pudp);
pr_cont(", pud=%016llx", pud_val(pud));
if (pud_none(pud) || pud_bad(pud))
break;
pmd = pmd_offset(pud, addr);
pr_cont(", *pmd=%016llx", pmd_val(*pmd));
if (pmd_none(*pmd) || pmd_bad(*pmd))
pmdp = pmd_offset(pudp, addr);
pmd = READ_ONCE(*pmdp);
pr_cont(", pmd=%016llx", pmd_val(pmd));
if (pmd_none(pmd) || pmd_bad(pmd))
break;
pte = pte_offset_map(pmd, addr);
pr_cont(", *pte=%016llx", pte_val(*pte));
pte_unmap(pte);
ptep = pte_offset_map(pmdp, addr);
pte = READ_ONCE(*ptep);
pr_cont(", pte=%016llx", pte_val(pte));
pte_unmap(ptep);
} while(0);
pr_cont("\n");
@ -196,8 +201,9 @@ int ptep_set_access_flags(struct vm_area_struct *vma,
pte_t entry, int dirty)
{
pteval_t old_pteval, pteval;
pte_t pte = READ_ONCE(*ptep);
if (pte_same(*ptep, entry))
if (pte_same(pte, entry))
return 0;
/* only preserve the access flags and write permission */
@ -210,7 +216,7 @@ int ptep_set_access_flags(struct vm_area_struct *vma,
* (calculated as: a & b == ~(~a | ~b)).
*/
pte_val(entry) ^= PTE_RDONLY;
pteval = READ_ONCE(pte_val(*ptep));
pteval = pte_val(pte);
do {
old_pteval = pteval;
pteval ^= PTE_RDONLY;

92
arch/arm64/mm/hugetlbpage.c
View File

@ -54,14 +54,14 @@ static inline pgprot_t pte_pgprot(pte_t pte)
static int find_num_contig(struct mm_struct *mm, unsigned long addr,
pte_t *ptep, size_t *pgsize)
{
pgd_t *pgd = pgd_offset(mm, addr);
pud_t *pud;
pmd_t *pmd;
pgd_t *pgdp = pgd_offset(mm, addr);
pud_t *pudp;
pmd_t *pmdp;
*pgsize = PAGE_SIZE;
pud = pud_offset(pgd, addr);
pmd = pmd_offset(pud, addr);
if ((pte_t *)pmd == ptep) {
pudp = pud_offset(pgdp, addr);
pmdp = pmd_offset(pudp, addr);
if ((pte_t *)pmdp == ptep) {
*pgsize = PMD_SIZE;
return CONT_PMDS;
}
@ -181,11 +181,8 @@ void set_huge_pte_at(struct mm_struct *mm, unsigned long addr,
clear_flush(mm, addr, ptep, pgsize, ncontig);
for (i = 0; i < ncontig; i++, ptep++, addr += pgsize, pfn += dpfn) {
pr_debug("%s: set pte %p to 0x%llx\n", __func__, ptep,
pte_val(pfn_pte(pfn, hugeprot)));
for (i = 0; i < ncontig; i++, ptep++, addr += pgsize, pfn += dpfn)
set_pte_at(mm, addr, ptep, pfn_pte(pfn, hugeprot));
}
}
void set_huge_swap_pte_at(struct mm_struct *mm, unsigned long addr,
@ -203,20 +200,20 @@ void set_huge_swap_pte_at(struct mm_struct *mm, unsigned long addr,
pte_t *huge_pte_alloc(struct mm_struct *mm,
unsigned long addr, unsigned long sz)
{
pgd_t *pgd;
pud_t *pud;
pte_t *pte = NULL;
pgd_t *pgdp;
pud_t *pudp;
pmd_t *pmdp;
pte_t *ptep = NULL;
pr_debug("%s: addr:0x%lx sz:0x%lx\n", __func__, addr, sz);
pgd = pgd_offset(mm, addr);
pud = pud_alloc(mm, pgd, addr);
if (!pud)
pgdp = pgd_offset(mm, addr);
pudp = pud_alloc(mm, pgdp, addr);
if (!pudp)
return NULL;
if (sz == PUD_SIZE) {
pte = (pte_t *)pud;
ptep = (pte_t *)pudp;
} else if (sz == (PAGE_SIZE * CONT_PTES)) {
pmd_t *pmd = pmd_alloc(mm, pud, addr);
pmdp = pmd_alloc(mm, pudp, addr);
WARN_ON(addr & (sz - 1));
/*
@ -226,60 +223,55 @@ pte_t *huge_pte_alloc(struct mm_struct *mm,
* will be no pte_unmap() to correspond with this
* pte_alloc_map().
*/
pte = pte_alloc_map(mm, pmd, addr);
ptep = pte_alloc_map(mm, pmdp, addr);
} else if (sz == PMD_SIZE) {
if (IS_ENABLED(CONFIG_ARCH_WANT_HUGE_PMD_SHARE) &&
pud_none(*pud))
pte = huge_pmd_share(mm, addr, pud);
pud_none(READ_ONCE(*pudp)))
ptep = huge_pmd_share(mm, addr, pudp);
else
pte = (pte_t *)pmd_alloc(mm, pud, addr);
ptep = (pte_t *)pmd_alloc(mm, pudp, addr);
} else if (sz == (PMD_SIZE * CONT_PMDS)) {
pmd_t *pmd;
pmd = pmd_alloc(mm, pud, addr);
pmdp = pmd_alloc(mm, pudp, addr);
WARN_ON(addr & (sz - 1));
return (pte_t *)pmd;
return (pte_t *)pmdp;
}
pr_debug("%s: addr:0x%lx sz:0x%lx ret pte=%p/0x%llx\n", __func__, addr,
sz, pte, pte_val(*pte));
return pte;
return ptep;
}
pte_t *huge_pte_offset(struct mm_struct *mm,
unsigned long addr, unsigned long sz)
{
pgd_t *pgd;
pud_t *pud;
pmd_t *pmd;
pgd_t *pgdp;
pud_t *pudp, pud;
pmd_t *pmdp, pmd;
pgd = pgd_offset(mm, addr);
pr_debug("%s: addr:0x%lx pgd:%p\n", __func__, addr, pgd);
if (!pgd_present(*pgd))
pgdp = pgd_offset(mm, addr);
if (!pgd_present(READ_ONCE(*pgdp)))
return NULL;
pud = pud_offset(pgd, addr);
if (sz != PUD_SIZE && pud_none(*pud))
pudp = pud_offset(pgdp, addr);
pud = READ_ONCE(*pudp);
if (sz != PUD_SIZE && pud_none(pud))
return NULL;
/* hugepage or swap? */
if (pud_huge(*pud) || !pud_present(*pud))
return (pte_t *)pud;
if (pud_huge(pud) || !pud_present(pud))
return (pte_t *)pudp;
/* table; check the next level */
if (sz == CONT_PMD_SIZE)
addr &= CONT_PMD_MASK;
pmd = pmd_offset(pud, addr);
pmdp = pmd_offset(pudp, addr);
pmd = READ_ONCE(*pmdp);
if (!(sz == PMD_SIZE || sz == CONT_PMD_SIZE) &&
pmd_none(*pmd))
pmd_none(pmd))
return NULL;
if (pmd_huge(*pmd) || !pmd_present(*pmd))
return (pte_t *)pmd;
if (pmd_huge(pmd) || !pmd_present(pmd))
return (pte_t *)pmdp;
if (sz == CONT_PTE_SIZE) {
pte_t *pte = pte_offset_kernel(pmd, (addr & CONT_PTE_MASK));
return pte;
}
if (sz == CONT_PTE_SIZE)
return pte_offset_kernel(pmdp, (addr & CONT_PTE_MASK));
return NULL;
}
@ -367,7 +359,7 @@ void huge_ptep_set_wrprotect(struct mm_struct *mm,
size_t pgsize;
pte_t pte;
if (!pte_cont(*ptep)) {
if (!pte_cont(READ_ONCE(*ptep))) {
ptep_set_wrprotect(mm, addr, ptep);
return;
}
@ -391,7 +383,7 @@ void huge_ptep_clear_flush(struct vm_area_struct *vma,
size_t pgsize;
int ncontig;
if (!pte_cont(*ptep)) {
if (!pte_cont(READ_ONCE(*ptep))) {
ptep_clear_flush(vma, addr, ptep);
return;
}

70
arch/arm64/mm/kasan_init.c
View File

@ -44,92 +44,92 @@ static phys_addr_t __init kasan_alloc_zeroed_page(int node)
return __pa(p);
}
static pte_t *__init kasan_pte_offset(pmd_t *pmd, unsigned long addr, int node,
static pte_t *__init kasan_pte_offset(pmd_t *pmdp, unsigned long addr, int node,
bool early)
{
if (pmd_none(*pmd)) {
if (pmd_none(READ_ONCE(*pmdp))) {
phys_addr_t pte_phys = early ? __pa_symbol(kasan_zero_pte)
: kasan_alloc_zeroed_page(node);
__pmd_populate(pmd, pte_phys, PMD_TYPE_TABLE);
__pmd_populate(pmdp, pte_phys, PMD_TYPE_TABLE);
}
return early ? pte_offset_kimg(pmd, addr)
: pte_offset_kernel(pmd, addr);
return early ? pte_offset_kimg(pmdp, addr)
: pte_offset_kernel(pmdp, addr);
}
static pmd_t *__init kasan_pmd_offset(pud_t *pud, unsigned long addr, int node,
static pmd_t *__init kasan_pmd_offset(pud_t *pudp, unsigned long addr, int node,
bool early)
{
if (pud_none(*pud)) {
if (pud_none(READ_ONCE(*pudp))) {
phys_addr_t pmd_phys = early ? __pa_symbol(kasan_zero_pmd)
: kasan_alloc_zeroed_page(node);
__pud_populate(pud, pmd_phys, PMD_TYPE_TABLE);
__pud_populate(pudp, pmd_phys, PMD_TYPE_TABLE);
}
return early ? pmd_offset_kimg(pud, addr) : pmd_offset(pud, addr);
return early ? pmd_offset_kimg(pudp, addr) : pmd_offset(pudp, addr);
}
static pud_t *__init kasan_pud_offset(pgd_t *pgd, unsigned long addr, int node,
static pud_t *__init kasan_pud_offset(pgd_t *pgdp, unsigned long addr, int node,
bool early)
{
if (pgd_none(*pgd)) {
if (pgd_none(READ_ONCE(*pgdp))) {
phys_addr_t pud_phys = early ? __pa_symbol(kasan_zero_pud)
: kasan_alloc_zeroed_page(node);
__pgd_populate(pgd, pud_phys, PMD_TYPE_TABLE);
__pgd_populate(pgdp, pud_phys, PMD_TYPE_TABLE);
}
return early ? pud_offset_kimg(pgd, addr) : pud_offset(pgd, addr);
return early ? pud_offset_kimg(pgdp, addr) : pud_offset(pgdp, addr);
}
static void __init kasan_pte_populate(pmd_t *pmd, unsigned long addr,
static void __init kasan_pte_populate(pmd_t *pmdp, unsigned long addr,
unsigned long end, int node, bool early)
{
unsigned long next;
pte_t *pte = kasan_pte_offset(pmd, addr, node, early);
pte_t *ptep = kasan_pte_offset(pmdp, addr, node, early);
do {
phys_addr_t page_phys = early ? __pa_symbol(kasan_zero_page)
: kasan_alloc_zeroed_page(node);
next = addr + PAGE_SIZE;
set_pte(pte, pfn_pte(__phys_to_pfn(page_phys), PAGE_KERNEL));
} while (pte++, addr = next, addr != end && pte_none(*pte));
set_pte(ptep, pfn_pte(__phys_to_pfn(page_phys), PAGE_KERNEL));
} while (ptep++, addr = next, addr != end && pte_none(READ_ONCE(*ptep)));
}
static void __init kasan_pmd_populate(pud_t *pud, unsigned long addr,
static void __init kasan_pmd_populate(pud_t *pudp, unsigned long addr,
unsigned long end, int node, bool early)
{
unsigned long next;
pmd_t *pmd = kasan_pmd_offset(pud, addr, node, early);
pmd_t *pmdp = kasan_pmd_offset(pudp, addr, node, early);
do {
next = pmd_addr_end(addr, end);
kasan_pte_populate(pmd, addr, next, node, early);
} while (pmd++, addr = next, addr != end && pmd_none(*pmd));
kasan_pte_populate(pmdp, addr, next, node, early);
} while (pmdp++, addr = next, addr != end && pmd_none(READ_ONCE(*pmdp)));
}
static void __init kasan_pud_populate(pgd_t *pgd, unsigned long addr,
static void __init kasan_pud_populate(pgd_t *pgdp, unsigned long addr,
unsigned long end, int node, bool early)
{
unsigned long next;
pud_t *pud = kasan_pud_offset(pgd, addr, node, early);
pud_t *pudp = kasan_pud_offset(pgdp, addr, node, early);
do {
next = pud_addr_end(addr, end);
kasan_pmd_populate(pud, addr, next, node, early);
} while (pud++, addr = next, addr != end && pud_none(*pud));
kasan_pmd_populate(pudp, addr, next, node, early);
} while (pudp++, addr = next, addr != end && pud_none(READ_ONCE(*pudp)));
}
static void __init kasan_pgd_populate(unsigned long addr, unsigned long end,
int node, bool early)
{
unsigned long next;
pgd_t *pgd;
pgd_t *pgdp;
pgd = pgd_offset_k(addr);
pgdp = pgd_offset_k(addr);
do {
next = pgd_addr_end(addr, end);
kasan_pud_populate(pgd, addr, next, node, early);
} while (pgd++, addr = next, addr != end);
kasan_pud_populate(pgdp, addr, next, node, early);
} while (pgdp++, addr = next, addr != end);
}
/* The early shadow maps everything to a single page of zeroes */
@ -155,14 +155,14 @@ static void __init kasan_map_populate(unsigned long start, unsigned long end,
*/
void __init kasan_copy_shadow(pgd_t *pgdir)
{
pgd_t *pgd, *pgd_new, *pgd_end;
pgd_t *pgdp, *pgdp_new, *pgdp_end;
pgd = pgd_offset_k(KASAN_SHADOW_START);
pgd_end = pgd_offset_k(KASAN_SHADOW_END);
pgd_new = pgd_offset_raw(pgdir, KASAN_SHADOW_START);
pgdp = pgd_offset_k(KASAN_SHADOW_START);
pgdp_end = pgd_offset_k(KASAN_SHADOW_END);
pgdp_new = pgd_offset_raw(pgdir, KASAN_SHADOW_START);
do {
set_pgd(pgd_new, *pgd);
} while (pgd++, pgd_new++, pgd != pgd_end);
set_pgd(pgdp_new, READ_ONCE(*pgdp));
} while (pgdp++, pgdp_new++, pgdp != pgdp_end);
}
static void __init clear_pgds(unsigned long start,

282
arch/arm64/mm/mmu.c
View File

@ -125,45 +125,48 @@ static bool pgattr_change_is_safe(u64 old, u64 new)
return ((old ^ new) & ~mask) == 0;
}
static void init_pte(pmd_t *pmd, unsigned long addr, unsigned long end,
static void init_pte(pmd_t *pmdp, unsigned long addr, unsigned long end,
phys_addr_t phys, pgprot_t prot)
{
pte_t *pte;
pte_t *ptep;
pte = pte_set_fixmap_offset(pmd, addr);
ptep = pte_set_fixmap_offset(pmdp, addr);
do {
pte_t old_pte = *pte;
pte_t old_pte = READ_ONCE(*ptep);
set_pte(pte, pfn_pte(__phys_to_pfn(phys), prot));
set_pte(ptep, pfn_pte(__phys_to_pfn(phys), prot));
/*
* After the PTE entry has been populated once, we
* only allow updates to the permission attributes.
*/
BUG_ON(!pgattr_change_is_safe(pte_val(old_pte), pte_val(*pte)));
BUG_ON(!pgattr_change_is_safe(pte_val(old_pte),
READ_ONCE(pte_val(*ptep))));
phys += PAGE_SIZE;
} while (pte++, addr += PAGE_SIZE, addr != end);
} while (ptep++, addr += PAGE_SIZE, addr != end);
pte_clear_fixmap();
}
static void alloc_init_cont_pte(pmd_t *pmd, unsigned long addr,
static void alloc_init_cont_pte(pmd_t *pmdp, unsigned long addr,
unsigned long end, phys_addr_t phys,
pgprot_t prot,
phys_addr_t (*pgtable_alloc)(void),
int flags)
{
unsigned long next;
pmd_t pmd = READ_ONCE(*pmdp);
BUG_ON(pmd_sect(*pmd));
if (pmd_none(*pmd)) {
BUG_ON(pmd_sect(pmd));
if (pmd_none(pmd)) {
phys_addr_t pte_phys;
BUG_ON(!pgtable_alloc);
pte_phys = pgtable_alloc();
__pmd_populate(pmd, pte_phys, PMD_TYPE_TABLE);
__pmd_populate(pmdp, pte_phys, PMD_TYPE_TABLE);
pmd = READ_ONCE(*pmdp);
}
BUG_ON(pmd_bad(*pmd));
BUG_ON(pmd_bad(pmd));
do {
pgprot_t __prot = prot;
@ -175,67 +178,69 @@ static void alloc_init_cont_pte(pmd_t *pmd, unsigned long addr,
(flags & NO_CONT_MAPPINGS) == 0)
__prot = __pgprot(pgprot_val(prot) | PTE_CONT);
init_pte(pmd, addr, next, phys, __prot);
init_pte(pmdp, addr, next, phys, __prot);
phys += next - addr;
} while (addr = next, addr != end);
}
static void init_pmd(pud_t *pud, unsigned long addr, unsigned long end,
static void init_pmd(pud_t *pudp, unsigned long addr, unsigned long end,
phys_addr_t phys, pgprot_t prot,
phys_addr_t (*pgtable_alloc)(void), int flags)
{
unsigned long next;
pmd_t *pmd;
pmd_t *pmdp;
pmd = pmd_set_fixmap_offset(pud, addr);
pmdp = pmd_set_fixmap_offset(pudp, addr);
do {
pmd_t old_pmd = *pmd;
pmd_t old_pmd = READ_ONCE(*pmdp);
next = pmd_addr_end(addr, end);
/* try section mapping first */
if (((addr | next | phys) & ~SECTION_MASK) == 0 &&
(flags & NO_BLOCK_MAPPINGS) == 0) {
pmd_set_huge(pmd, phys, prot);
pmd_set_huge(pmdp, phys, prot);
/*
* After the PMD entry has been populated once, we
* only allow updates to the permission attributes.
*/
BUG_ON(!pgattr_change_is_safe(pmd_val(old_pmd),
pmd_val(*pmd)));
READ_ONCE(pmd_val(*pmdp))));
} else {
alloc_init_cont_pte(pmd, addr, next, phys, prot,
alloc_init_cont_pte(pmdp, addr, next, phys, prot,
pgtable_alloc, flags);
BUG_ON(pmd_val(old_pmd) != 0 &&
pmd_val(old_pmd) != pmd_val(*pmd));
pmd_val(old_pmd) != READ_ONCE(pmd_val(*pmdp)));
}
phys += next - addr;
} while (pmd++, addr = next, addr != end);
} while (pmdp++, addr = next, addr != end);
pmd_clear_fixmap();
}
static void alloc_init_cont_pmd(pud_t *pud, unsigned long addr,
static void alloc_init_cont_pmd(pud_t *pudp, unsigned long addr,
unsigned long end, phys_addr_t phys,
pgprot_t prot,
phys_addr_t (*pgtable_alloc)(void), int flags)
{
unsigned long next;
pud_t pud = READ_ONCE(*pudp);
/*
* Check for initial section mappings in the pgd/pud.
*/
BUG_ON(pud_sect(*pud));
if (pud_none(*pud)) {
BUG_ON(pud_sect(pud));
if (pud_none(pud)) {
phys_addr_t pmd_phys;
BUG_ON(!pgtable_alloc);
pmd_phys = pgtable_alloc();
__pud_populate(pud, pmd_phys, PUD_TYPE_TABLE);
__pud_populate(pudp, pmd_phys, PUD_TYPE_TABLE);
pud = READ_ONCE(*pudp);
}
BUG_ON(pud_bad(*pud));
BUG_ON(pud_bad(pud));
do {
pgprot_t __prot = prot;
@ -247,7 +252,7 @@ static void alloc_init_cont_pmd(pud_t *pud, unsigned long addr,
(flags & NO_CONT_MAPPINGS) == 0)
__prot = __pgprot(pgprot_val(prot) | PTE_CONT);
init_pmd(pud, addr, next, phys, __prot, pgtable_alloc, flags);
init_pmd(pudp, addr, next, phys, __prot, pgtable_alloc, flags);
phys += next - addr;
} while (addr = next, addr != end);
@ -265,25 +270,27 @@ static inline bool use_1G_block(unsigned long addr, unsigned long next,
return true;
}
static void alloc_init_pud(pgd_t *pgd, unsigned long addr, unsigned long end,
phys_addr_t phys, pgprot_t prot,
phys_addr_t (*pgtable_alloc)(void),
int flags)
static void alloc_init_pud(pgd_t *pgdp, unsigned long addr, unsigned long end,
phys_addr_t phys, pgprot_t prot,
phys_addr_t (*pgtable_alloc)(void),
int flags)
{
pud_t *pud;
unsigned long next;
pud_t *pudp;
pgd_t pgd = READ_ONCE(*pgdp);
if (pgd_none(*pgd)) {
if (pgd_none(pgd)) {
phys_addr_t pud_phys;
BUG_ON(!pgtable_alloc);
pud_phys = pgtable_alloc();
__pgd_populate(pgd, pud_phys, PUD_TYPE_TABLE);
__pgd_populate(pgdp, pud_phys, PUD_TYPE_TABLE);
pgd = READ_ONCE(*pgdp);
}
BUG_ON(pgd_bad(*pgd));
BUG_ON(pgd_bad(pgd));
pud = pud_set_fixmap_offset(pgd, addr);
pudp = pud_set_fixmap_offset(pgdp, addr);
do {
pud_t old_pud = *pud;
pud_t old_pud = READ_ONCE(*pudp);
next = pud_addr_end(addr, end);
@ -292,23 +299,23 @@ static void alloc_init_pud(pgd_t *pgd, unsigned long addr, unsigned long end,
*/
if (use_1G_block(addr, next, phys) &&
(flags & NO_BLOCK_MAPPINGS) == 0) {
pud_set_huge(pud, phys, prot);
pud_set_huge(pudp, phys, prot);
/*
* After the PUD entry has been populated once, we
* only allow updates to the permission attributes.
*/
BUG_ON(!pgattr_change_is_safe(pud_val(old_pud),
pud_val(*pud)));
READ_ONCE(pud_val(*pudp))));
} else {
alloc_init_cont_pmd(pud, addr, next, phys, prot,
alloc_init_cont_pmd(pudp, addr, next, phys, prot,
pgtable_alloc, flags);
BUG_ON(pud_val(old_pud) != 0 &&
pud_val(old_pud) != pud_val(*pud));
pud_val(old_pud) != READ_ONCE(pud_val(*pudp)));
}
phys += next - addr;
} while (pud++, addr = next, addr != end);
} while (pudp++, addr = next, addr != end);
pud_clear_fixmap();
}
@ -320,7 +327,7 @@ static void __create_pgd_mapping(pgd_t *pgdir, phys_addr_t phys,
int flags)
{
unsigned long addr, length, end, next;
pgd_t *pgd = pgd_offset_raw(pgdir, virt);
pgd_t *pgdp = pgd_offset_raw(pgdir, virt);
/*
* If the virtual and physical address don't have the same offset
@ -336,10 +343,10 @@ static void __create_pgd_mapping(pgd_t *pgdir, phys_addr_t phys,
end = addr + length;
do {
next = pgd_addr_end(addr, end);
alloc_init_pud(pgd, addr, next, phys, prot, pgtable_alloc,
alloc_init_pud(pgdp, addr, next, phys, prot, pgtable_alloc,
flags);
phys += next - addr;
} while (pgd++, addr = next, addr != end);
} while (pgdp++, addr = next, addr != end);
}
static phys_addr_t pgd_pgtable_alloc(void)
@ -401,10 +408,10 @@ static void update_mapping_prot(phys_addr_t phys, unsigned long virt,
flush_tlb_kernel_range(virt, virt + size);
}
static void __init __map_memblock(pgd_t *pgd, phys_addr_t start,
static void __init __map_memblock(pgd_t *pgdp, phys_addr_t start,
phys_addr_t end, pgprot_t prot, int flags)
{
__create_pgd_mapping(pgd, start, __phys_to_virt(start), end - start,
__create_pgd_mapping(pgdp, start, __phys_to_virt(start), end - start,
prot, early_pgtable_alloc, flags);
}
@ -418,7 +425,7 @@ void __init mark_linear_text_alias_ro(void)
PAGE_KERNEL_RO);
}
static void __init map_mem(pgd_t *pgd)
static void __init map_mem(pgd_t *pgdp)
{
phys_addr_t kernel_start = __pa_symbol(_text);
phys_addr_t kernel_end = __pa_symbol(__init_begin);
@ -451,7 +458,7 @@ static void __init map_mem(pgd_t *pgd)
if (memblock_is_nomap(reg))
continue;
__map_memblock(pgd, start, end, PAGE_KERNEL, flags);
__map_memblock(pgdp, start, end, PAGE_KERNEL, flags);
}
/*
@ -464,7 +471,7 @@ static void __init map_mem(pgd_t *pgd)
* Note that contiguous mappings cannot be remapped in this way,
* so we should avoid them here.
*/
__map_memblock(pgd, kernel_start, kernel_end,
__map_memblock(pgdp, kernel_start, kernel_end,
PAGE_KERNEL, NO_CONT_MAPPINGS);
memblock_clear_nomap(kernel_start, kernel_end - kernel_start);
@ -475,7 +482,7 @@ static void __init map_mem(pgd_t *pgd)
* through /sys/kernel/kexec_crash_size interface.
*/
if (crashk_res.end) {
__map_memblock(pgd, crashk_res.start, crashk_res.end + 1,
__map_memblock(pgdp, crashk_res.start, crashk_res.end + 1,
PAGE_KERNEL,
NO_BLOCK_MAPPINGS | NO_CONT_MAPPINGS);
memblock_clear_nomap(crashk_res.start,
@ -499,7 +506,7 @@ void mark_rodata_ro(void)
debug_checkwx();
}
static void __init map_kernel_segment(pgd_t *pgd, void *va_start, void *va_end,
static void __init map_kernel_segment(pgd_t *pgdp, void *va_start, void *va_end,
pgprot_t prot, struct vm_struct *vma,
int flags, unsigned long vm_flags)
{
@ -509,7 +516,7 @@ static void __init map_kernel_segment(pgd_t *pgd, void *va_start, void *va_end,
BUG_ON(!PAGE_ALIGNED(pa_start));
BUG_ON(!PAGE_ALIGNED(size));
__create_pgd_mapping(pgd, pa_start, (unsigned long)va_start, size, prot,
__create_pgd_mapping(pgdp, pa_start, (unsigned long)va_start, size, prot,
early_pgtable_alloc, flags);
if (!(vm_flags & VM_NO_GUARD))
@ -562,7 +569,7 @@ core_initcall(map_entry_trampoline);
/*
* Create fine-grained mappings for the kernel.
*/
static void __init map_kernel(pgd_t *pgd)
static void __init map_kernel(pgd_t *pgdp)
{
static struct vm_struct vmlinux_text, vmlinux_rodata, vmlinux_inittext,
vmlinux_initdata, vmlinux_data;
@ -578,24 +585,24 @@ static void __init map_kernel(pgd_t *pgd)
* Only rodata will be remapped with different permissions later on,
* all other segments are allowed to use contiguous mappings.
*/
map_kernel_segment(pgd, _text, _etext, text_prot, &vmlinux_text, 0,
map_kernel_segment(pgdp, _text, _etext, text_prot, &vmlinux_text, 0,
VM_NO_GUARD);
map_kernel_segment(pgd, __start_rodata, __inittext_begin, PAGE_KERNEL,
map_kernel_segment(pgdp, __start_rodata, __inittext_begin, PAGE_KERNEL,
&vmlinux_rodata, NO_CONT_MAPPINGS, VM_NO_GUARD);
map_kernel_segment(pgd, __inittext_begin, __inittext_end, text_prot,
map_kernel_segment(pgdp, __inittext_begin, __inittext_end, text_prot,
&vmlinux_inittext, 0, VM_NO_GUARD);
map_kernel_segment(pgd, __initdata_begin, __initdata_end, PAGE_KERNEL,
map_kernel_segment(pgdp, __initdata_begin, __initdata_end, PAGE_KERNEL,
&vmlinux_initdata, 0, VM_NO_GUARD);
map_kernel_segment(pgd, _data, _end, PAGE_KERNEL, &vmlinux_data, 0, 0);
map_kernel_segment(pgdp, _data, _end, PAGE_KERNEL, &vmlinux_data, 0, 0);
if (!pgd_val(*pgd_offset_raw(pgd, FIXADDR_START))) {
if (!READ_ONCE(pgd_val(*pgd_offset_raw(pgdp, FIXADDR_START)))) {
/*
* The fixmap falls in a separate pgd to the kernel, and doesn't
* live in the carveout for the swapper_pg_dir. We can simply
* re-use the existing dir for the fixmap.
*/
set_pgd(pgd_offset_raw(pgd, FIXADDR_START),
*pgd_offset_k(FIXADDR_START));
set_pgd(pgd_offset_raw(pgdp, FIXADDR_START),
READ_ONCE(*pgd_offset_k(FIXADDR_START)));
} else if (CONFIG_PGTABLE_LEVELS > 3) {
/*
* The fixmap shares its top level pgd entry with the kernel
@ -604,14 +611,15 @@ static void __init map_kernel(pgd_t *pgd)
* entry instead.
*/
BUG_ON(!IS_ENABLED(CONFIG_ARM64_16K_PAGES));
pud_populate(&init_mm, pud_set_fixmap_offset(pgd, FIXADDR_START),
pud_populate(&init_mm,
pud_set_fixmap_offset(pgdp, FIXADDR_START),
lm_alias(bm_pmd));
pud_clear_fixmap();
} else {
BUG();
}
kasan_copy_shadow(pgd);
kasan_copy_shadow(pgdp);
}
/*
@ -621,10 +629,10 @@ static void __init map_kernel(pgd_t *pgd)
void __init paging_init(void)
{
phys_addr_t pgd_phys = early_pgtable_alloc();
pgd_t *pgd = pgd_set_fixmap(pgd_phys);
pgd_t *pgdp = pgd_set_fixmap(pgd_phys);
map_kernel(pgd);
map_mem(pgd);
map_kernel(pgdp);
map_mem(pgdp);
/*
* We want to reuse the original swapper_pg_dir so we don't have to
@ -635,7 +643,7 @@ void __init paging_init(void)
* To do this we need to go via a temporary pgd.
*/
cpu_replace_ttbr1(__va(pgd_phys));
memcpy(swapper_pg_dir, pgd, PGD_SIZE);
memcpy(swapper_pg_dir, pgdp, PGD_SIZE);
cpu_replace_ttbr1(lm_alias(swapper_pg_dir));
pgd_clear_fixmap();
@ -655,37 +663,40 @@ void __init paging_init(void)
*/
int kern_addr_valid(unsigned long addr)
{
pgd_t *pgd;
pud_t *pud;
pmd_t *pmd;
pte_t *pte;
pgd_t *pgdp;
pud_t *pudp, pud;
pmd_t *pmdp, pmd;
pte_t *ptep, pte;
if ((((long)addr) >> VA_BITS) != -1UL)
return 0;
pgd = pgd_offset_k(addr);
if (pgd_none(*pgd))
pgdp = pgd_offset_k(addr);
if (pgd_none(READ_ONCE(*pgdp)))
return 0;
pud = pud_offset(pgd, addr);
if (pud_none(*pud))
pudp = pud_offset(pgdp, addr);
pud = READ_ONCE(*pudp);
if (pud_none(pud))
return 0;
if (pud_sect(*pud))
return pfn_valid(pud_pfn(*pud));
if (pud_sect(pud))
return pfn_valid(pud_pfn(pud));
pmd = pmd_offset(pud, addr);
if (pmd_none(*pmd))
pmdp = pmd_offset(pudp, addr);
pmd = READ_ONCE(*pmdp);
if (pmd_none(pmd))
return 0;
if (pmd_sect(*pmd))
return pfn_valid(pmd_pfn(*pmd));
if (pmd_sect(pmd))
return pfn_valid(pmd_pfn(pmd));
pte = pte_offset_kernel(pmd, addr);
if (pte_none(*pte))
ptep = pte_offset_kernel(pmdp, addr);
pte = READ_ONCE(*ptep);
if (pte_none(pte))
return 0;
return pfn_valid(pte_pfn(*pte));
return pfn_valid(pte_pfn(pte));
}
#ifdef CONFIG_SPARSEMEM_VMEMMAP
#if !ARM64_SWAPPER_USES_SECTION_MAPS
@ -700,32 +711,32 @@ int __meminit vmemmap_populate(unsigned long start, unsigned long end, int node,
{
unsigned long addr = start;
unsigned long next;
pgd_t *pgd;
pud_t *pud;
pmd_t *pmd;
pgd_t *pgdp;
pud_t *pudp;
pmd_t *pmdp;
do {
next = pmd_addr_end(addr, end);
pgd = vmemmap_pgd_populate(addr, node);
if (!pgd)
pgdp = vmemmap_pgd_populate(addr, node);
if (!pgdp)
return -ENOMEM;
pud = vmemmap_pud_populate(pgd, addr, node);
if (!pud)
pudp = vmemmap_pud_populate(pgdp, addr, node);
if (!pudp)
return -ENOMEM;
pmd = pmd_offset(pud, addr);
if (pmd_none(*pmd)) {
pmdp = pmd_offset(pudp, addr);
if (pmd_none(READ_ONCE(*pmdp))) {
void *p = NULL;
p = vmemmap_alloc_block_buf(PMD_SIZE, node);
if (!p)
return -ENOMEM;
pmd_set_huge(pmd, __pa(p), __pgprot(PROT_SECT_NORMAL));
pmd_set_huge(pmdp, __pa(p), __pgprot(PROT_SECT_NORMAL));
} else
vmemmap_verify((pte_t *)pmd, node, addr, next);
vmemmap_verify((pte_t *)pmdp, node, addr, next);
} while (addr = next, addr != end);
return 0;
@ -739,20 +750,22 @@ void vmemmap_free(unsigned long start, unsigned long end,
static inline pud_t * fixmap_pud(unsigned long addr)
{
pgd_t *pgd = pgd_offset_k(addr);
pgd_t *pgdp = pgd_offset_k(addr);
pgd_t pgd = READ_ONCE(*pgdp);
BUG_ON(pgd_none(*pgd) || pgd_bad(*pgd));
BUG_ON(pgd_none(pgd) || pgd_bad(pgd));
return pud_offset_kimg(pgd, addr);
return pud_offset_kimg(pgdp, addr);
}
static inline pmd_t * fixmap_pmd(unsigned long addr)
{
pud_t *pud = fixmap_pud(addr);
pud_t *pudp = fixmap_pud(addr);
pud_t pud = READ_ONCE(*pudp);
BUG_ON(pud_none(*pud) || pud_bad(*pud));
BUG_ON(pud_none(pud) || pud_bad(pud));
return pmd_offset_kimg(pud, addr);
return pmd_offset_kimg(pudp, addr);
}
static inline pte_t * fixmap_pte(unsigned long addr)
@ -768,30 +781,31 @@ static inline pte_t * fixmap_pte(unsigned long addr)
*/
void __init early_fixmap_init(void)
{
pgd_t *pgd;
pud_t *pud;
pmd_t *pmd;
pgd_t *pgdp, pgd;
pud_t *pudp;
pmd_t *pmdp;
unsigned long addr = FIXADDR_START;
pgd = pgd_offset_k(addr);
pgdp = pgd_offset_k(addr);
pgd = READ_ONCE(*pgdp);
if (CONFIG_PGTABLE_LEVELS > 3 &&
!(pgd_none(*pgd) || pgd_page_paddr(*pgd) == __pa_symbol(bm_pud))) {
!(pgd_none(pgd) || pgd_page_paddr(pgd) == __pa_symbol(bm_pud))) {
/*
* We only end up here if the kernel mapping and the fixmap
* share the top level pgd entry, which should only happen on
* 16k/4 levels configurations.
*/
BUG_ON(!IS_ENABLED(CONFIG_ARM64_16K_PAGES));
pud = pud_offset_kimg(pgd, addr);
pudp = pud_offset_kimg(pgdp, addr);
} else {
if (pgd_none(*pgd))
__pgd_populate(pgd, __pa_symbol(bm_pud), PUD_TYPE_TABLE);
pud = fixmap_pud(addr);
if (pgd_none(pgd))
__pgd_populate(pgdp, __pa_symbol(bm_pud), PUD_TYPE_TABLE);
pudp = fixmap_pud(addr);
}
if (pud_none(*pud))
__pud_populate(pud, __pa_symbol(bm_pmd), PMD_TYPE_TABLE);
pmd = fixmap_pmd(addr);
__pmd_populate(pmd, __pa_symbol(bm_pte), PMD_TYPE_TABLE);
if (pud_none(READ_ONCE(*pudp)))
__pud_populate(pudp, __pa_symbol(bm_pmd), PMD_TYPE_TABLE);
pmdp = fixmap_pmd(addr);
__pmd_populate(pmdp, __pa_symbol(bm_pte), PMD_TYPE_TABLE);
/*
* The boot-ioremap range spans multiple pmds, for which
@ -800,11 +814,11 @@ void __init early_fixmap_init(void)
BUILD_BUG_ON((__fix_to_virt(FIX_BTMAP_BEGIN) >> PMD_SHIFT)
!= (__fix_to_virt(FIX_BTMAP_END) >> PMD_SHIFT));
if ((pmd != fixmap_pmd(fix_to_virt(FIX_BTMAP_BEGIN)))
|| pmd != fixmap_pmd(fix_to_virt(FIX_BTMAP_END))) {
if ((pmdp != fixmap_pmd(fix_to_virt(FIX_BTMAP_BEGIN)))
|| pmdp != fixmap_pmd(fix_to_virt(FIX_BTMAP_END))) {
WARN_ON(1);
pr_warn("pmd %p != %p, %p\n",
pmd, fixmap_pmd(fix_to_virt(FIX_BTMAP_BEGIN)),
pr_warn("pmdp %p != %p, %p\n",
pmdp, fixmap_pmd(fix_to_virt(FIX_BTMAP_BEGIN)),
fixmap_pmd(fix_to_virt(FIX_BTMAP_END)));
pr_warn("fix_to_virt(FIX_BTMAP_BEGIN): %08lx\n",
fix_to_virt(FIX_BTMAP_BEGIN));
@ -824,16 +838,16 @@ void __set_fixmap(enum fixed_addresses idx,
phys_addr_t phys, pgprot_t flags)
{
unsigned long addr = __fix_to_virt(idx);
pte_t *pte;
pte_t *ptep;
BUG_ON(idx <= FIX_HOLE || idx >= __end_of_fixed_addresses);
pte = fixmap_pte(addr);
ptep = fixmap_pte(addr);
if (pgprot_val(flags)) {
set_pte(pte, pfn_pte(phys >> PAGE_SHIFT, flags));
set_pte(ptep, pfn_pte(phys >> PAGE_SHIFT, flags));
} else {
pte_clear(&init_mm, addr, pte);
pte_clear(&init_mm, addr, ptep);
flush_tlb_kernel_range(addr, addr+PAGE_SIZE);
}
}
@ -915,36 +929,36 @@ int __init arch_ioremap_pmd_supported(void)
return 1;
}
int pud_set_huge(pud_t *pud, phys_addr_t phys, pgprot_t prot)
int pud_set_huge(pud_t *pudp, phys_addr_t phys, pgprot_t prot)
{
pgprot_t sect_prot = __pgprot(PUD_TYPE_SECT |
pgprot_val(mk_sect_prot(prot)));
BUG_ON(phys & ~PUD_MASK);
set_pud(pud, pfn_pud(__phys_to_pfn(phys), sect_prot));
set_pud(pudp, pfn_pud(__phys_to_pfn(phys), sect_prot));
return 1;
}
int pmd_set_huge(pmd_t *pmd, phys_addr_t phys, pgprot_t prot)
int pmd_set_huge(pmd_t *pmdp, phys_addr_t phys, pgprot_t prot)
{
pgprot_t sect_prot = __pgprot(PMD_TYPE_SECT |
pgprot_val(mk_sect_prot(prot)));
BUG_ON(phys & ~PMD_MASK);
set_pmd(pmd, pfn_pmd(__phys_to_pfn(phys), sect_prot));
set_pmd(pmdp, pfn_pmd(__phys_to_pfn(phys), sect_prot));
return 1;
}
int pud_clear_huge(pud_t *pud)
int pud_clear_huge(pud_t *pudp)
{
if (!pud_sect(*pud))
if (!pud_sect(READ_ONCE(*pudp)))
return 0;
pud_clear(pud);
pud_clear(pudp);
return 1;
}
int pmd_clear_huge(pmd_t *pmd)
int pmd_clear_huge(pmd_t *pmdp)
{
if (!pmd_sect(*pmd))
if (!pmd_sect(READ_ONCE(*pmdp)))
return 0;
pmd_clear(pmd);
pmd_clear(pmdp);
return 1;
}

32
arch/arm64/mm/pageattr.c
View File

@ -29,7 +29,7 @@ static int change_page_range(pte_t *ptep, pgtable_t token, unsigned long addr,
void *data)
{
struct page_change_data *cdata = data;
pte_t pte = *ptep;
pte_t pte = READ_ONCE(*ptep);
pte = clear_pte_bit(pte, cdata->clear_mask);
pte = set_pte_bit(pte, cdata->set_mask);
@ -156,30 +156,32 @@ void __kernel_map_pages(struct page *page, int numpages, int enable)
*/
bool kernel_page_present(struct page *page)
{
pgd_t *pgd;
pud_t *pud;
pmd_t *pmd;
pte_t *pte;
pgd_t *pgdp;
pud_t *pudp, pud;
pmd_t *pmdp, pmd;
pte_t *ptep;
unsigned long addr = (unsigned long)page_address(page);
pgd = pgd_offset_k(addr);
if (pgd_none(*pgd))
pgdp = pgd_offset_k(addr);
if (pgd_none(READ_ONCE(*pgdp)))
return false;
pud = pud_offset(pgd, addr);
if (pud_none(*pud))
pudp = pud_offset(pgdp, addr);
pud = READ_ONCE(*pudp);
if (pud_none(pud))
return false;
if (pud_sect(*pud))
if (pud_sect(pud))
return true;
pmd = pmd_offset(pud, addr);
if (pmd_none(*pmd))
pmdp = pmd_offset(pudp, addr);
pmd = READ_ONCE(*pmdp);
if (pmd_none(pmd))
return false;
if (pmd_sect(*pmd))
if (pmd_sect(pmd))
return true;
pte = pte_offset_kernel(pmd, addr);
return pte_valid(*pte);
ptep = pte_offset_kernel(pmdp, addr);
return pte_valid(READ_ONCE(*ptep));
}
#endif /* CONFIG_HIBERNATION */
#endif /* CONFIG_DEBUG_PAGEALLOC */

14
arch/arm64/mm/proc.S
View File

@ -205,7 +205,8 @@ ENDPROC(idmap_cpu_replace_ttbr1)
dc cvac, cur_\()\type\()p // Ensure any existing dirty
dmb sy // lines are written back before
ldr \type, [cur_\()\type\()p] // loading the entry
tbz \type, #0, next_\()\type // Skip invalid entries
tbz \type, #0, skip_\()\type // Skip invalid and
tbnz \type, #11, skip_\()\type // non-global entries
.endm
.macro __idmap_kpti_put_pgtable_ent_ng, type
@ -265,8 +266,9 @@ ENTRY(idmap_kpti_install_ng_mappings)
add end_pgdp, cur_pgdp, #(PTRS_PER_PGD * 8)
do_pgd: __idmap_kpti_get_pgtable_ent pgd
tbnz pgd, #1, walk_puds
__idmap_kpti_put_pgtable_ent_ng pgd
next_pgd:
__idmap_kpti_put_pgtable_ent_ng pgd
skip_pgd:
add cur_pgdp, cur_pgdp, #8
cmp cur_pgdp, end_pgdp
b.ne do_pgd
@ -294,8 +296,9 @@ walk_puds:
add end_pudp, cur_pudp, #(PTRS_PER_PUD * 8)
do_pud: __idmap_kpti_get_pgtable_ent pud
tbnz pud, #1, walk_pmds
__idmap_kpti_put_pgtable_ent_ng pud
next_pud:
__idmap_kpti_put_pgtable_ent_ng pud
skip_pud:
add cur_pudp, cur_pudp, 8
cmp cur_pudp, end_pudp
b.ne do_pud
@ -314,8 +317,9 @@ walk_pmds:
add end_pmdp, cur_pmdp, #(PTRS_PER_PMD * 8)
do_pmd: __idmap_kpti_get_pgtable_ent pmd
tbnz pmd, #1, walk_ptes
__idmap_kpti_put_pgtable_ent_ng pmd
next_pmd:
__idmap_kpti_put_pgtable_ent_ng pmd
skip_pmd:
add cur_pmdp, cur_pmdp, #8
cmp cur_pmdp, end_pmdp
b.ne do_pmd
@ -333,7 +337,7 @@ walk_ptes:
add end_ptep, cur_ptep, #(PTRS_PER_PTE * 8)
do_pte: __idmap_kpti_get_pgtable_ent pte
__idmap_kpti_put_pgtable_ent_ng pte
next_pte:
skip_pte:
add cur_ptep, cur_ptep, #8
cmp cur_ptep, end_ptep
b.ne do_pte

1
arch/ia64/kernel/Makefile
View File

@ -41,7 +41,6 @@ ifneq ($(CONFIG_IA64_ESI),)
obj-y += esi_stub.o # must be in kernel proper
endif
obj-$(CONFIG_INTEL_IOMMU) += pci-dma.o
obj-$(CONFIG_SWIOTLB) += pci-swiotlb.o
obj-$(CONFIG_BINFMT_ELF) += elfcore.o

16
arch/mips/kernel/setup.c
View File

@ -375,6 +375,7 @@ static void __init bootmem_init(void)
unsigned long reserved_end;
unsigned long mapstart = ~0UL;
unsigned long bootmap_size;
phys_addr_t ramstart = (phys_addr_t)ULLONG_MAX;
bool bootmap_valid = false;
int i;
@ -395,7 +396,8 @@ static void __init bootmem_init(void)
max_low_pfn = 0;
/*
* Find the highest page frame number we have available.
* Find the highest page frame number we have available
* and the lowest used RAM address
*/
for (i = 0; i < boot_mem_map.nr_map; i++) {
unsigned long start, end;
@ -407,6 +409,8 @@ static void __init bootmem_init(void)
end = PFN_DOWN(boot_mem_map.map[i].addr
+ boot_mem_map.map[i].size);
ramstart = min(ramstart, boot_mem_map.map[i].addr);
#ifndef CONFIG_HIGHMEM
/*
* Skip highmem here so we get an accurate max_low_pfn if low
@ -436,6 +440,13 @@ static void __init bootmem_init(void)
mapstart = max(reserved_end, start);
}
/*
* Reserve any memory between the start of RAM and PHYS_OFFSET
*/
if (ramstart > PHYS_OFFSET)
add_memory_region(PHYS_OFFSET, ramstart - PHYS_OFFSET,
BOOT_MEM_RESERVED);
if (min_low_pfn >= max_low_pfn)
panic("Incorrect memory mapping !!!");
if (min_low_pfn > ARCH_PFN_OFFSET) {
@ -664,9 +675,6 @@ static int __init early_parse_mem(char *p)
add_memory_region(start, size, BOOT_MEM_RAM);
if (start && start > PHYS_OFFSET)
add_memory_region(PHYS_OFFSET, start - PHYS_OFFSET,
BOOT_MEM_RESERVED);
return 0;
}
early_param("mem", early_parse_mem);

2
arch/mips/kernel/smp-bmips.c
View File

@ -572,7 +572,7 @@ asmlinkage void __weak plat_wired_tlb_setup(void)
*/
}
void __init bmips_cpu_setup(void)
void bmips_cpu_setup(void)
{
void __iomem __maybe_unused *cbr = BMIPS_GET_CBR();
u32 __maybe_unused cfg;

3
arch/powerpc/include/asm/topology.h
View File

@ -81,6 +81,9 @@ static inline int numa_update_cpu_topology(bool cpus_locked)
{
return 0;
}
static inline void update_numa_cpu_lookup_table(unsigned int cpu, int node) {}
#endif /* CONFIG_NUMA */
#if defined(CONFIG_NUMA) && defined(CONFIG_PPC_SPLPAR)

6
arch/powerpc/kernel/sysfs.c
View File

@ -788,7 +788,8 @@ static int register_cpu_online(unsigned int cpu)
if (cpu_has_feature(CPU_FTR_PPCAS_ARCH_V2))
device_create_file(s, &dev_attr_pir);
if (cpu_has_feature(CPU_FTR_ARCH_206))
if (cpu_has_feature(CPU_FTR_ARCH_206) &&
!firmware_has_feature(FW_FEATURE_LPAR))
device_create_file(s, &dev_attr_tscr);
#endif /* CONFIG_PPC64 */
@ -873,7 +874,8 @@ static int unregister_cpu_online(unsigned int cpu)
if (cpu_has_feature(CPU_FTR_PPCAS_ARCH_V2))
device_remove_file(s, &dev_attr_pir);
if (cpu_has_feature(CPU_FTR_ARCH_206))
if (cpu_has_feature(CPU_FTR_ARCH_206) &&
!firmware_has_feature(FW_FEATURE_LPAR))
device_remove_file(s, &dev_attr_tscr);
#endif /* CONFIG_PPC64 */

8
arch/powerpc/mm/drmem.c
View File

@ -216,6 +216,8 @@ static void __init __walk_drmem_v1_lmbs(const __be32 *prop, const __be32 *usm,
u32 i, n_lmbs;
n_lmbs = of_read_number(prop++, 1);
if (n_lmbs == 0)
return;
for (i = 0; i < n_lmbs; i++) {
read_drconf_v1_cell(&lmb, &prop);
@ -245,6 +247,8 @@ static void __init __walk_drmem_v2_lmbs(const __be32 *prop, const __be32 *usm,
u32 i, j, lmb_sets;
lmb_sets = of_read_number(prop++, 1);
if (lmb_sets == 0)
return;
for (i = 0; i < lmb_sets; i++) {
read_drconf_v2_cell(&dr_cell, &prop);
@ -354,6 +358,8 @@ static void __init init_drmem_v1_lmbs(const __be32 *prop)
struct drmem_lmb *lmb;
drmem_info->n_lmbs = of_read_number(prop++, 1);
if (drmem_info->n_lmbs == 0)
return;
drmem_info->lmbs = kcalloc(drmem_info->n_lmbs, sizeof(*lmb),
GFP_KERNEL);
@ -373,6 +379,8 @@ static void __init init_drmem_v2_lmbs(const __be32 *prop)
int lmb_index;
lmb_sets = of_read_number(prop++, 1);
if (lmb_sets == 0)
return;
/* first pass, calculate the number of LMBs */
p = prop;

6
arch/powerpc/platforms/powernv/opal-imc.c
View File

@ -199,9 +199,11 @@ static void disable_nest_pmu_counters(void)
const struct cpumask *l_cpumask;
get_online_cpus();
for_each_online_node(nid) {
for_each_node_with_cpus(nid) {
l_cpumask = cpumask_of_node(nid);
cpu = cpumask_first(l_cpumask);
cpu = cpumask_first_and(l_cpumask, cpu_online_mask);
if (cpu >= nr_cpu_ids)
continue;
opal_imc_counters_stop(OPAL_IMC_COUNTERS_NEST,
get_hard_smp_processor_id(cpu));
}

16
arch/powerpc/sysdev/xive/spapr.c
View File

@ -356,7 +356,8 @@ static int xive_spapr_configure_queue(u32 target, struct xive_q *q, u8 prio,
rc = plpar_int_get_queue_info(0, target, prio, &esn_page, &esn_size);
if (rc) {
pr_err("Error %lld getting queue info prio %d\n", rc, prio);
pr_err("Error %lld getting queue info CPU %d prio %d\n", rc,
target, prio);
rc = -EIO;
goto fail;
}
@ -370,7 +371,8 @@ static int xive_spapr_configure_queue(u32 target, struct xive_q *q, u8 prio,
/* Configure and enable the queue in HW */
rc = plpar_int_set_queue_config(flags, target, prio, qpage_phys, order);
if (rc) {
pr_err("Error %lld setting queue for prio %d\n", rc, prio);
pr_err("Error %lld setting queue for CPU %d prio %d\n", rc,
target, prio);
rc = -EIO;
} else {
q->qpage = qpage;
@ -389,8 +391,8 @@ static int xive_spapr_setup_queue(unsigned int cpu, struct xive_cpu *xc,
if (IS_ERR(qpage))
return PTR_ERR(qpage);
return xive_spapr_configure_queue(cpu, q, prio, qpage,
xive_queue_shift);
return xive_spapr_configure_queue(get_hard_smp_processor_id(cpu),
q, prio, qpage, xive_queue_shift);
}
static void xive_spapr_cleanup_queue(unsigned int cpu, struct xive_cpu *xc,
@ -399,10 +401,12 @@ static void xive_spapr_cleanup_queue(unsigned int cpu, struct xive_cpu *xc,
struct xive_q *q = &xc->queue[prio];
unsigned int alloc_order;
long rc;
int hw_cpu = get_hard_smp_processor_id(cpu);
rc = plpar_int_set_queue_config(0, cpu, prio, 0, 0);
rc = plpar_int_set_queue_config(0, hw_cpu, prio, 0, 0);
if (rc)
pr_err("Error %ld setting queue for prio %d\n", rc, prio);
pr_err("Error %ld setting queue for CPU %d prio %d\n", rc,
hw_cpu, prio);
alloc_order = xive_alloc_order(xive_queue_shift);
free_pages((unsigned long)q->qpage, alloc_order);

2
arch/sparc/Kconfig
View File

@ -430,6 +430,8 @@ config SPARC_LEON
depends on SPARC32
select USB_EHCI_BIG_ENDIAN_MMIO
select USB_EHCI_BIG_ENDIAN_DESC
select USB_UHCI_BIG_ENDIAN_MMIO
select USB_UHCI_BIG_ENDIAN_DESC
---help---
If you say Y here if you are running on a SPARC-LEON processor.
The LEON processor is a synthesizable VHDL model of the

2
arch/x86/Kconfig
View File

@ -1404,7 +1404,7 @@ config HIGHMEM4G
config HIGHMEM64G
bool "64GB"
depends on !M486
depends on !M486 && !M586 && !M586TSC && !M586MMX && !MGEODE_LX && !MGEODEGX1 && !MCYRIXIII && !MELAN && !MWINCHIPC6 && !WINCHIP3D && !MK6
select X86_PAE
---help---
Select this if you have a 32-bit processor and more than 4

4
arch/x86/Kconfig.cpu
View File

@ -374,7 +374,7 @@ config X86_TSC
config X86_CMPXCHG64
def_bool y
depends on X86_PAE || X86_64 || MCORE2 || MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M686 || MATOM
depends on X86_PAE || X86_64 || MCORE2 || MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M686 || M586TSC || M586MMX || MATOM || MGEODE_LX || MGEODEGX1 || MK6 || MK7 || MK8
# this should be set for all -march=.. options where the compiler
# generates cmov.
@ -385,7 +385,7 @@ config X86_CMOV
config X86_MINIMUM_CPU_FAMILY
int
default "64" if X86_64
default "6" if X86_32 && X86_P6_NOP
default "6" if X86_32 && (MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M686 || MVIAC3_2 || MVIAC7 || MEFFICEON || MATOM || MCRUSOE || MCORE2 || MK7 || MK8)
default "5" if X86_32 && X86_CMPXCHG64
default "4"

1
arch/x86/include/asm/smp.h
View File

@ -129,6 +129,7 @@ static inline void arch_send_call_function_ipi_mask(const struct cpumask *mask)
void cpu_disable_common(void);
void native_smp_prepare_boot_cpu(void);
void native_smp_prepare_cpus(unsigned int max_cpus);
void calculate_max_logical_packages(void);
void native_smp_cpus_done(unsigned int max_cpus);
void common_cpu_up(unsigned int cpunum, struct task_struct *tidle);
int native_cpu_up(unsigned int cpunum, struct task_struct *tidle);

10
arch/x86/kernel/smpboot.c
View File

@ -1281,11 +1281,10 @@ void __init native_smp_prepare_boot_cpu(void)
cpu_set_state_online(me);
}
void __init native_smp_cpus_done(unsigned int max_cpus)
void __init calculate_max_logical_packages(void)
{
int ncpus;
pr_debug("Boot done\n");
/*
* Today neither Intel nor AMD support heterogenous systems so
* extrapolate the boot cpu's data to all packages.
@ -1293,6 +1292,13 @@ void __init native_smp_cpus_done(unsigned int max_cpus)
ncpus = cpu_data(0).booted_cores * topology_max_smt_threads();
__max_logical_packages = DIV_ROUND_UP(nr_cpu_ids, ncpus);
pr_info("Max logical packages: %u\n", __max_logical_packages);
}
void __init native_smp_cpus_done(unsigned int max_cpus)
{
pr_debug("Boot done\n");
calculate_max_logical_packages();
if (x86_has_numa_in_package)
set_sched_topology(x86_numa_in_package_topology);

2
arch/x86/xen/smp.c
View File

@ -122,6 +122,8 @@ void __init xen_smp_cpus_done(unsigned int max_cpus)
if (xen_hvm_domain())
native_smp_cpus_done(max_cpus);
else
calculate_max_logical_packages();
if (xen_have_vcpu_info_placement)
return;

1
block/blk-mq.c
View File

@ -3164,6 +3164,7 @@ static bool __blk_mq_poll(struct blk_mq_hw_ctx *hctx, struct request *rq)
cpu_relax();
}
__set_current_state(TASK_RUNNING);
return false;
}

75
drivers/acpi/bus.c
View File

@ -660,13 +660,15 @@ struct acpi_device *acpi_companion_match(const struct device *dev)
* acpi_of_match_device - Match device object using the "compatible" property.
* @adev: ACPI device object to match.
* @of_match_table: List of device IDs to match against.
* @of_id: OF ID if matched
*
* If @dev has an ACPI companion which has ACPI_DT_NAMESPACE_HID in its list of
* identifiers and a _DSD object with the "compatible" property, use that
* property to match against the given list of identifiers.
*/
static bool acpi_of_match_device(struct acpi_device *adev,
const struct of_device_id *of_match_table)
const struct of_device_id *of_match_table,
const struct of_device_id **of_id)
{
const union acpi_object *of_compatible, *obj;
int i, nval;
@ -690,8 +692,11 @@ static bool acpi_of_match_device(struct acpi_device *adev,
const struct of_device_id *id;
for (id = of_match_table; id->compatible[0]; id++)
if (!strcasecmp(obj->string.pointer, id->compatible))
if (!strcasecmp(obj->string.pointer, id->compatible)) {
if (of_id)
*of_id = id;
return true;
}
}
return false;
@ -762,10 +767,11 @@ static bool __acpi_match_device_cls(const struct acpi_device_id *id,
return true;
}
static const struct acpi_device_id *__acpi_match_device(
struct acpi_device *device,
const struct acpi_device_id *ids,
const struct of_device_id *of_ids)
static bool __acpi_match_device(struct acpi_device *device,
const struct acpi_device_id *acpi_ids,
const struct of_device_id *of_ids,
const struct acpi_device_id **acpi_id,
const struct of_device_id **of_id)
{
const struct acpi_device_id *id;
struct acpi_hardware_id *hwid;
@ -775,30 +781,32 @@ static const struct acpi_device_id *__acpi_match_device(
* driver for it.
*/
if (!device || !device->status.present)
return NULL;
return false;
list_for_each_entry(hwid, &device->pnp.ids, list) {
/* First, check the ACPI/PNP IDs provided by the caller. */
for (id = ids; id->id[0] || id->cls; id++) {
if (id->id[0] && !strcmp((char *) id->id, hwid->id))
return id;
else if (id->cls && __acpi_match_device_cls(id, hwid))
return id;
if (acpi_ids) {
for (id = acpi_ids; id->id[0] || id->cls; id++) {
if (id->id[0] && !strcmp((char *)id->id, hwid->id))
goto out_acpi_match;
if (id->cls && __acpi_match_device_cls(id, hwid))
goto out_acpi_match;
}
}
/*
* Next, check ACPI_DT_NAMESPACE_HID and try to match the
* "compatible" property if found.
*
* The id returned by the below is not valid, but the only
* caller passing non-NULL of_ids here is only interested in
* whether or not the return value is NULL.
*/
if (!strcmp(ACPI_DT_NAMESPACE_HID, hwid->id)
&& acpi_of_match_device(device, of_ids))
return id;
if (!strcmp(ACPI_DT_NAMESPACE_HID, hwid->id))
return acpi_of_match_device(device, of_ids, of_id);
}
return NULL;
return false;
out_acpi_match:
if (acpi_id)
*acpi_id = id;
return true;
}
/**
@ -815,32 +823,29 @@ static const struct acpi_device_id *__acpi_match_device(
const struct acpi_device_id *acpi_match_device(const struct acpi_device_id *ids,
const struct device *dev)
{
return __acpi_match_device(acpi_companion_match(dev), ids, NULL);
const struct acpi_device_id *id = NULL;
__acpi_match_device(acpi_companion_match(dev), ids, NULL, &id, NULL);
return id;
}
EXPORT_SYMBOL_GPL(acpi_match_device);
void *acpi_get_match_data(const struct device *dev)
const void *acpi_device_get_match_data(const struct device *dev)
{
const struct acpi_device_id *match;
if (!dev->driver)
return NULL;
if (!dev->driver->acpi_match_table)
return NULL;
match = acpi_match_device(dev->driver->acpi_match_table, dev);
if (!match)
return NULL;
return (void *)match->driver_data;
return (const void *)match->driver_data;
}
EXPORT_SYMBOL_GPL(acpi_get_match_data);
EXPORT_SYMBOL_GPL(acpi_device_get_match_data);
int acpi_match_device_ids(struct acpi_device *device,
const struct acpi_device_id *ids)
{
return __acpi_match_device(device, ids, NULL) ? 0 : -ENOENT;
return __acpi_match_device(device, ids, NULL, NULL, NULL) ? 0 : -ENOENT;
}
EXPORT_SYMBOL(acpi_match_device_ids);
@ -849,10 +854,12 @@ bool acpi_driver_match_device(struct device *dev,
{
if (!drv->acpi_match_table)
return acpi_of_match_device(ACPI_COMPANION(dev),
drv->of_match_table);
drv->of_match_table,
NULL);
return !!__acpi_match_device(acpi_companion_match(dev),
drv->acpi_match_table, drv->of_match_table);
return __acpi_match_device(acpi_companion_match(dev),
drv->acpi_match_table, drv->of_match_table,
NULL, NULL);
}
EXPORT_SYMBOL_GPL(acpi_driver_match_device);

6
drivers/acpi/ec.c
View File

@ -1927,6 +1927,9 @@ static int acpi_ec_suspend_noirq(struct device *dev)
ec->reference_count >= 1)
acpi_set_gpe(NULL, ec->gpe, ACPI_GPE_DISABLE);
if (acpi_sleep_no_ec_events())
acpi_ec_enter_noirq(ec);
return 0;
}
@ -1934,6 +1937,9 @@ static int acpi_ec_resume_noirq(struct device *dev)
{
struct acpi_ec *ec = acpi_driver_data(to_acpi_device(dev));
if (acpi_sleep_no_ec_events())
acpi_ec_leave_noirq(ec);
if (ec_no_wakeup && test_bit(EC_FLAGS_STARTED, &ec->flags) &&
ec->reference_count >= 1)
acpi_set_gpe(NULL, ec->gpe, ACPI_GPE_ENABLE);

4
drivers/acpi/property.c
View File

@ -1271,11 +1271,11 @@ static int acpi_fwnode_graph_parse_endpoint(const struct fwnode_handle *fwnode,
return 0;
}
static void *
static const void *
acpi_fwnode_device_get_match_data(const struct fwnode_handle *fwnode,
const struct device *dev)
{
return acpi_get_match_data(dev);
return acpi_device_get_match_data(dev);
}
#define DECLARE_ACPI_FWNODE_OPS(ops) \

1
drivers/acpi/spcr.c
View File

@ -115,6 +115,7 @@ int __init acpi_parse_spcr(bool enable_earlycon, bool enable_console)
table->serial_port.access_width))) {
default:
pr_err("Unexpected SPCR Access Width. Defaulting to byte size\n");
/* fall through */
case 8:
iotype = "mmio";
break;

3
drivers/base/core.c
View File

@ -310,6 +310,9 @@ static void __device_link_del(struct device_link *link)
dev_info(link->consumer, "Dropping the link to %s\n",
dev_name(link->supplier));
if (link->flags & DL_FLAG_PM_RUNTIME)
pm_runtime_drop_link(link->consumer);
list_del(&link->s_node);
list_del(&link->c_node);
device_link_free(link);

6
drivers/base/power/wakeirq.c
View File

@ -321,7 +321,8 @@ void dev_pm_arm_wake_irq(struct wake_irq *wirq)
return;
if (device_may_wakeup(wirq->dev)) {
if (wirq->status & WAKE_IRQ_DEDICATED_ALLOCATED)
if (wirq->status & WAKE_IRQ_DEDICATED_ALLOCATED &&
!pm_runtime_status_suspended(wirq->dev))
enable_irq(wirq->irq);
enable_irq_wake(wirq->irq);
@ -343,7 +344,8 @@ void dev_pm_disarm_wake_irq(struct wake_irq *wirq)
if (device_may_wakeup(wirq->dev)) {
disable_irq_wake(wirq->irq);
if (wirq->status & WAKE_IRQ_DEDICATED_ALLOCATED)
if (wirq->status & WAKE_IRQ_DEDICATED_ALLOCATED &&
!pm_runtime_status_suspended(wirq->dev))
disable_irq_nosync(wirq->irq);
}
}

5
drivers/base/property.c
View File

@ -1410,9 +1410,8 @@ int fwnode_graph_parse_endpoint(const struct fwnode_handle *fwnode,
}
EXPORT_SYMBOL(fwnode_graph_parse_endpoint);
void *device_get_match_data(struct device *dev)
const void *device_get_match_data(struct device *dev)
{
return fwnode_call_ptr_op(dev_fwnode(dev), device_get_match_data,
dev);
return fwnode_call_ptr_op(dev_fwnode(dev), device_get_match_data, dev);
}
EXPORT_SYMBOL_GPL(device_get_match_data);

1
drivers/gpu/drm/amd/amdgpu/amdgpu_atpx_handler.c
View File

@ -568,6 +568,7 @@ static const struct amdgpu_px_quirk amdgpu_px_quirk_list[] = {
/* HG _PR3 doesn't seem to work on this A+A weston board */
{ 0x1002, 0x6900, 0x1002, 0x0124, AMDGPU_PX_QUIRK_FORCE_ATPX },
{ 0x1002, 0x6900, 0x1028, 0x0812, AMDGPU_PX_QUIRK_FORCE_ATPX },
{ 0x1002, 0x6900, 0x1028, 0x0813, AMDGPU_PX_QUIRK_FORCE_ATPX },
{ 0, 0, 0, 0, 0 },
};

51
drivers/gpu/drm/i915/gvt/kvmgt.c
View File

@ -733,6 +733,25 @@ static ssize_t intel_vgpu_rw(struct mdev_device *mdev, char *buf,
return ret == 0 ? count : ret;
}
static bool gtt_entry(struct mdev_device *mdev, loff_t *ppos)
{
struct intel_vgpu *vgpu = mdev_get_drvdata(mdev);
unsigned int index = VFIO_PCI_OFFSET_TO_INDEX(*ppos);
struct intel_gvt *gvt = vgpu->gvt;
int offset;
/* Only allow MMIO GGTT entry access */
if (index != PCI_BASE_ADDRESS_0)
return false;
offset = (u64)(*ppos & VFIO_PCI_OFFSET_MASK) -
intel_vgpu_get_bar_gpa(vgpu, PCI_BASE_ADDRESS_0);
return (offset >= gvt->device_info.gtt_start_offset &&
offset < gvt->device_info.gtt_start_offset + gvt_ggtt_sz(gvt)) ?
true : false;
}
static ssize_t intel_vgpu_read(struct mdev_device *mdev, char __user *buf,
size_t count, loff_t *ppos)
{
@ -742,7 +761,21 @@ static ssize_t intel_vgpu_read(struct mdev_device *mdev, char __user *buf,
while (count) {
size_t filled;
if (count >= 4 && !(*ppos % 4)) {
/* Only support GGTT entry 8 bytes read */
if (count >= 8 && !(*ppos % 8) &&
gtt_entry(mdev, ppos)) {
u64 val;
ret = intel_vgpu_rw(mdev, (char *)&val, sizeof(val),
ppos, false);
if (ret <= 0)
goto read_err;
if (copy_to_user(buf, &val, sizeof(val)))
goto read_err;
filled = 8;
} else if (count >= 4 && !(*ppos % 4)) {
u32 val;
ret = intel_vgpu_rw(mdev, (char *)&val, sizeof(val),
@ -802,7 +835,21 @@ static ssize_t intel_vgpu_write(struct mdev_device *mdev,
while (count) {
size_t filled;
if (count >= 4 && !(*ppos % 4)) {
/* Only support GGTT entry 8 bytes write */
if (count >= 8 && !(*ppos % 8) &&
gtt_entry(mdev, ppos)) {
u64 val;
if (copy_from_user(&val, buf, sizeof(val)))
goto write_err;
ret = intel_vgpu_rw(mdev, (char *)&val, sizeof(val),
ppos, true);
if (ret <= 0)
goto write_err;
filled = 8;
} else if (count >= 4 && !(*ppos % 4)) {
u32 val;
if (copy_from_user(&val, buf, sizeof(val)))

1
drivers/gpu/drm/i915/gvt/mmio_context.c
View File

@ -118,6 +118,7 @@ static struct engine_mmio gen9_engine_mmio_list[] __cacheline_aligned = {
{RCS, HALF_SLICE_CHICKEN3, 0xffff, true}, /* 0xe184 */
{RCS, GEN9_HALF_SLICE_CHICKEN5, 0xffff, true}, /* 0xe188 */
{RCS, GEN9_HALF_SLICE_CHICKEN7, 0xffff, true}, /* 0xe194 */
{RCS, GEN8_ROW_CHICKEN, 0xffff, true}, /* 0xe4f0 */
{RCS, TRVATTL3PTRDW(0), 0, false}, /* 0x4de0 */
{RCS, TRVATTL3PTRDW(1), 0, false}, /* 0x4de4 */
{RCS, TRNULLDETCT, 0, false}, /* 0x4de8 */

2
drivers/gpu/drm/i915/gvt/trace.h
View File

@ -333,7 +333,7 @@ TRACE_EVENT(render_mmio,
TP_PROTO(int old_id, int new_id, char *action, unsigned int reg,
unsigned int old_val, unsigned int new_val),
TP_ARGS(old_id, new_id, action, reg, new_val, old_val),
TP_ARGS(old_id, new_id, action, reg, old_val, new_val),
TP_STRUCT__entry(
__field(int, old_id)

14
drivers/gpu/drm/i915/i915_drv.c
View File

@ -1433,19 +1433,7 @@ void i915_driver_unload(struct drm_device *dev)
intel_modeset_cleanup(dev);
/*
* free the memory space allocated for the child device
* config parsed from VBT
*/
if (dev_priv->vbt.child_dev && dev_priv->vbt.child_dev_num) {
kfree(dev_priv->vbt.child_dev);
dev_priv->vbt.child_dev = NULL;
dev_priv->vbt.child_dev_num = 0;
}
kfree(dev_priv->vbt.sdvo_lvds_vbt_mode);
dev_priv->vbt.sdvo_lvds_vbt_mode = NULL;
kfree(dev_priv->vbt.lfp_lvds_vbt_mode);
dev_priv->vbt.lfp_lvds_vbt_mode = NULL;
intel_bios_cleanup(dev_priv);
vga_switcheroo_unregister_client(pdev);
vga_client_register(pdev, NULL, NULL, NULL);

2
drivers/gpu/drm/i915/i915_drv.h
View File

@ -1349,6 +1349,7 @@ struct intel_vbt_data {
u32 size;
u8 *data;
const u8 *sequence[MIPI_SEQ_MAX];
u8 *deassert_seq; /* Used by fixup_mipi_sequences() */
} dsi;
int crt_ddc_pin;
@ -3657,6 +3658,7 @@ extern void intel_i2c_reset(struct drm_i915_private *dev_priv);
/* intel_bios.c */
void intel_bios_init(struct drm_i915_private *dev_priv);
void intel_bios_cleanup(struct drm_i915_private *dev_priv);
bool intel_bios_is_valid_vbt(const void *buf, size_t size);
bool intel_bios_is_tv_present(struct drm_i915_private *dev_priv);
bool intel_bios_is_lvds_present(struct drm_i915_private *dev_priv, u8 *i2c_pin);

2
drivers/gpu/drm/i915/i915_gem_context.c
View File

@ -803,7 +803,7 @@ int i915_gem_context_setparam_ioctl(struct drm_device *dev, void *data,
case I915_CONTEXT_PARAM_PRIORITY:
{
int priority = args->value;
s64 priority = args->value;
if (args->size)
ret = -EINVAL;

4
drivers/gpu/drm/i915/i915_oa_cflgt3.c
View File

@ -84,9 +84,9 @@ show_test_oa_id(struct device *kdev, struct device_attribute *attr, char *buf)
void
i915_perf_load_test_config_cflgt3(struct drm_i915_private *dev_priv)
{
strncpy(dev_priv->perf.oa.test_config.uuid,
strlcpy(dev_priv->perf.oa.test_config.uuid,
"577e8e2c-3fa0-4875-8743-3538d585e3b0",
UUID_STRING_LEN);
sizeof(dev_priv->perf.oa.test_config.uuid));
dev_priv->perf.oa.test_config.id = 1;
dev_priv->perf.oa.test_config.mux_regs = mux_config_test_oa;

4
drivers/gpu/drm/i915/i915_oa_cnl.c
View File

@ -96,9 +96,9 @@ show_test_oa_id(struct device *kdev, struct device_attribute *attr, char *buf)
void
i915_perf_load_test_config_cnl(struct drm_i915_private *dev_priv)
{
strncpy(dev_priv->perf.oa.test_config.uuid,
strlcpy(dev_priv->perf.oa.test_config.uuid,
"db41edd4-d8e7-4730-ad11-b9a2d6833503",
UUID_STRING_LEN);
sizeof(dev_priv->perf.oa.test_config.uuid));
dev_priv->perf.oa.test_config.id = 1;
dev_priv->perf.oa.test_config.mux_regs = mux_config_test_oa;

233
drivers/gpu/drm/i915/i915_pmu.c
View File

@ -285,26 +285,41 @@ static u64 count_interrupts(struct drm_i915_private *i915)
return sum;
}
static void i915_pmu_event_destroy(struct perf_event *event)
{
WARN_ON(event->parent);
}
static int engine_event_init(struct perf_event *event)
static void engine_event_destroy(struct perf_event *event)
{
struct drm_i915_private *i915 =
container_of(event->pmu, typeof(*i915), pmu.base);
struct intel_engine_cs *engine;
if (!intel_engine_lookup_user(i915, engine_event_class(event),
engine_event_instance(event)))
return -ENODEV;
engine = intel_engine_lookup_user(i915,
engine_event_class(event),
engine_event_instance(event));
if (WARN_ON_ONCE(!engine))
return;
switch (engine_event_sample(event)) {
if (engine_event_sample(event) == I915_SAMPLE_BUSY &&
intel_engine_supports_stats(engine))
intel_disable_engine_stats(engine);
}
static void i915_pmu_event_destroy(struct perf_event *event)
{
WARN_ON(event->parent);
if (is_engine_event(event))
engine_event_destroy(event);
}
static int
engine_event_status(struct intel_engine_cs *engine,
enum drm_i915_pmu_engine_sample sample)
{
switch (sample) {
case I915_SAMPLE_BUSY:
case I915_SAMPLE_WAIT:
break;
case I915_SAMPLE_SEMA:
if (INTEL_GEN(i915) < 6)
if (INTEL_GEN(engine->i915) < 6)
return -ENODEV;
break;
default:
@ -314,6 +329,30 @@ static int engine_event_init(struct perf_event *event)
return 0;
}
static int engine_event_init(struct perf_event *event)
{
struct drm_i915_private *i915 =
container_of(event->pmu, typeof(*i915), pmu.base);
struct intel_engine_cs *engine;
u8 sample;
int ret;
engine = intel_engine_lookup_user(i915, engine_event_class(event),
engine_event_instance(event));
if (!engine)
return -ENODEV;
sample = engine_event_sample(event);
ret = engine_event_status(engine, sample);
if (ret)
return ret;
if (sample == I915_SAMPLE_BUSY && intel_engine_supports_stats(engine))
ret = intel_enable_engine_stats(engine);
return ret;
}
static int i915_pmu_event_init(struct perf_event *event)
{
struct drm_i915_private *i915 =
@ -370,7 +409,94 @@ static int i915_pmu_event_init(struct perf_event *event)
return 0;
}
static u64 __i915_pmu_event_read(struct perf_event *event)
static u64 __get_rc6(struct drm_i915_private *i915)
{
u64 val;
val = intel_rc6_residency_ns(i915,
IS_VALLEYVIEW(i915) ?
VLV_GT_RENDER_RC6 :
GEN6_GT_GFX_RC6);
if (HAS_RC6p(i915))
val += intel_rc6_residency_ns(i915, GEN6_GT_GFX_RC6p);
if (HAS_RC6pp(i915))
val += intel_rc6_residency_ns(i915, GEN6_GT_GFX_RC6pp);
return val;
}
static u64 get_rc6(struct drm_i915_private *i915, bool locked)
{
#if IS_ENABLED(CONFIG_PM)
unsigned long flags;
u64 val;
if (intel_runtime_pm_get_if_in_use(i915)) {
val = __get_rc6(i915);
intel_runtime_pm_put(i915);
/*
* If we are coming back from being runtime suspended we must
* be careful not to report a larger value than returned
* previously.
*/
if (!locked)
spin_lock_irqsave(&i915->pmu.lock, flags);
if (val >= i915->pmu.sample[__I915_SAMPLE_RC6_ESTIMATED].cur) {
i915->pmu.sample[__I915_SAMPLE_RC6_ESTIMATED].cur = 0;
i915->pmu.sample[__I915_SAMPLE_RC6].cur = val;
} else {
val = i915->pmu.sample[__I915_SAMPLE_RC6_ESTIMATED].cur;
}
if (!locked)
spin_unlock_irqrestore(&i915->pmu.lock, flags);
} else {
struct pci_dev *pdev = i915->drm.pdev;
struct device *kdev = &pdev->dev;
unsigned long flags2;
/*
* We are runtime suspended.
*
* Report the delta from when the device was suspended to now,
* on top of the last known real value, as the approximated RC6
* counter value.
*/
if (!locked)
spin_lock_irqsave(&i915->pmu.lock, flags);
spin_lock_irqsave(&kdev->power.lock, flags2);
if (!i915->pmu.sample[__I915_SAMPLE_RC6_ESTIMATED].cur)
i915->pmu.suspended_jiffies_last =
kdev->power.suspended_jiffies;
val = kdev->power.suspended_jiffies -
i915->pmu.suspended_jiffies_last;
val += jiffies - kdev->power.accounting_timestamp;
spin_unlock_irqrestore(&kdev->power.lock, flags2);
val = jiffies_to_nsecs(val);
val += i915->pmu.sample[__I915_SAMPLE_RC6].cur;
i915->pmu.sample[__I915_SAMPLE_RC6_ESTIMATED].cur = val;
if (!locked)
spin_unlock_irqrestore(&i915->pmu.lock, flags);
}
return val;
#else
return __get_rc6(i915);
#endif
}
static u64 __i915_pmu_event_read(struct perf_event *event, bool locked)
{
struct drm_i915_private *i915 =
container_of(event->pmu, typeof(*i915), pmu.base);
@ -387,7 +513,7 @@ static u64 __i915_pmu_event_read(struct perf_event *event)
if (WARN_ON_ONCE(!engine)) {
/* Do nothing */
} else if (sample == I915_SAMPLE_BUSY &&
engine->pmu.busy_stats) {
intel_engine_supports_stats(engine)) {
val = ktime_to_ns(intel_engine_get_busy_time(engine));
} else {
val = engine->pmu.sample[sample].cur;
@ -408,18 +534,7 @@ static u64 __i915_pmu_event_read(struct perf_event *event)
val = count_interrupts(i915);
break;
case I915_PMU_RC6_RESIDENCY:
intel_runtime_pm_get(i915);
val = intel_rc6_residency_ns(i915,
IS_VALLEYVIEW(i915) ?
VLV_GT_RENDER_RC6 :
GEN6_GT_GFX_RC6);
if (HAS_RC6p(i915))
val += intel_rc6_residency_ns(i915,
GEN6_GT_GFX_RC6p);
if (HAS_RC6pp(i915))
val += intel_rc6_residency_ns(i915,
GEN6_GT_GFX_RC6pp);
intel_runtime_pm_put(i915);
val = get_rc6(i915, locked);
break;
}
}
@ -434,7 +549,7 @@ static void i915_pmu_event_read(struct perf_event *event)
again:
prev = local64_read(&hwc->prev_count);
new = __i915_pmu_event_read(event);
new = __i915_pmu_event_read(event, false);
if (local64_cmpxchg(&hwc->prev_count, prev, new) != prev)
goto again;
@ -442,12 +557,6 @@ static void i915_pmu_event_read(struct perf_event *event)
local64_add(new - prev, &event->count);
}
static bool engine_needs_busy_stats(struct intel_engine_cs *engine)
{
return intel_engine_supports_stats(engine) &&
(engine->pmu.enable & BIT(I915_SAMPLE_BUSY));
}
static void i915_pmu_enable(struct perf_event *event)
{
struct drm_i915_private *i915 =
@ -487,21 +596,7 @@ static void i915_pmu_enable(struct perf_event *event)
GEM_BUG_ON(sample >= I915_PMU_SAMPLE_BITS);
GEM_BUG_ON(engine->pmu.enable_count[sample] == ~0);
if (engine->pmu.enable_count[sample]++ == 0) {
/*
* Enable engine busy stats tracking if needed or
* alternatively cancel the scheduled disable.
*
* If the delayed disable was pending, cancel it and
* in this case do not enable since it already is.
*/
if (engine_needs_busy_stats(engine) &&
!engine->pmu.busy_stats) {
engine->pmu.busy_stats = true;
if (!cancel_delayed_work(&engine->pmu.disable_busy_stats))
intel_enable_engine_stats(engine);
}
}
engine->pmu.enable_count[sample]++;
}
/*
@ -509,19 +604,11 @@ static void i915_pmu_enable(struct perf_event *event)
* for all listeners. Even when the event was already enabled and has
* an existing non-zero value.
*/
local64_set(&event->hw.prev_count, __i915_pmu_event_read(event));
local64_set(&event->hw.prev_count, __i915_pmu_event_read(event, true));
spin_unlock_irqrestore(&i915->pmu.lock, flags);
}
static void __disable_busy_stats(struct work_struct *work)
{
struct intel_engine_cs *engine =
container_of(work, typeof(*engine), pmu.disable_busy_stats.work);
intel_disable_engine_stats(engine);
}
static void i915_pmu_disable(struct perf_event *event)
{
struct drm_i915_private *i915 =
@ -545,26 +632,8 @@ static void i915_pmu_disable(struct perf_event *event)
* Decrement the reference count and clear the enabled
* bitmask when the last listener on an event goes away.
*/
if (--engine->pmu.enable_count[sample] == 0) {
if (--engine->pmu.enable_count[sample] == 0)
engine->pmu.enable &= ~BIT(sample);
if (!engine_needs_busy_stats(engine) &&
engine->pmu.busy_stats) {
engine->pmu.busy_stats = false;
/*
* We request a delayed disable to handle the
* rapid on/off cycles on events, which can
* happen when tools like perf stat start, in a
* nicer way.
*
* In addition, this also helps with busy stats
* accuracy with background CPU offline/online
* migration events.
*/
queue_delayed_work(system_wq,
&engine->pmu.disable_busy_stats,
round_jiffies_up_relative(HZ));
}
}
}
GEM_BUG_ON(bit >= I915_PMU_MASK_BITS);
@ -797,8 +866,6 @@ static void i915_pmu_unregister_cpuhp_state(struct drm_i915_private *i915)
void i915_pmu_register(struct drm_i915_private *i915)
{
struct intel_engine_cs *engine;
enum intel_engine_id id;
int ret;
if (INTEL_GEN(i915) <= 2) {
@ -820,10 +887,6 @@ void i915_pmu_register(struct drm_i915_private *i915)
hrtimer_init(&i915->pmu.timer, CLOCK_MONOTONIC, HRTIMER_MODE_REL);
i915->pmu.timer.function = i915_sample;
for_each_engine(engine, i915, id)
INIT_DELAYED_WORK(&engine->pmu.disable_busy_stats,
__disable_busy_stats);
ret = perf_pmu_register(&i915->pmu.base, "i915", -1);
if (ret)
goto err;
@ -843,9 +906,6 @@ void i915_pmu_register(struct drm_i915_private *i915)
void i915_pmu_unregister(struct drm_i915_private *i915)
{
struct intel_engine_cs *engine;
enum intel_engine_id id;
if (!i915->pmu.base.event_init)
return;
@ -853,11 +913,6 @@ void i915_pmu_unregister(struct drm_i915_private *i915)
hrtimer_cancel(&i915->pmu.timer);
for_each_engine(engine, i915, id) {
GEM_BUG_ON(engine->pmu.busy_stats);
flush_delayed_work(&engine->pmu.disable_busy_stats);
}
i915_pmu_unregister_cpuhp_state(i915);
perf_pmu_unregister(&i915->pmu.base);

6
drivers/gpu/drm/i915/i915_pmu.h
View File

@ -27,6 +27,8 @@
enum {
__I915_SAMPLE_FREQ_ACT = 0,
__I915_SAMPLE_FREQ_REQ,
__I915_SAMPLE_RC6,
__I915_SAMPLE_RC6_ESTIMATED,
__I915_NUM_PMU_SAMPLERS
};
@ -94,6 +96,10 @@ struct i915_pmu {
* struct intel_engine_cs.
*/
struct i915_pmu_sample sample[__I915_NUM_PMU_SAMPLERS];
/**
* @suspended_jiffies_last: Cached suspend time from PM core.
*/
unsigned long suspended_jiffies_last;
};
#ifdef CONFIG_PERF_EVENTS

105
drivers/gpu/drm/i915/intel_bios.c
View File

@ -947,6 +947,86 @@ static int goto_next_sequence_v3(const u8 *data, int index, int total)
return 0;
}
/*
* Get len of pre-fixed deassert fragment from a v1 init OTP sequence,
* skip all delay + gpio operands and stop at the first DSI packet op.
*/
static int get_init_otp_deassert_fragment_len(struct drm_i915_private *dev_priv)
{
const u8 *data = dev_priv->vbt.dsi.sequence[MIPI_SEQ_INIT_OTP];
int index, len;
if (WARN_ON(!data || dev_priv->vbt.dsi.seq_version != 1))
return 0;
/* index = 1 to skip sequence byte */
for (index = 1; data[index] != MIPI_SEQ_ELEM_END; index += len) {
switch (data[index]) {
case MIPI_SEQ_ELEM_SEND_PKT:
return index == 1 ? 0 : index;
case MIPI_SEQ_ELEM_DELAY:
len = 5; /* 1 byte for operand + uint32 */
break;
case MIPI_SEQ_ELEM_GPIO:
len = 3; /* 1 byte for op, 1 for gpio_nr, 1 for value */
break;
default:
return 0;
}
}
return 0;
}
/*
* Some v1 VBT MIPI sequences do the deassert in the init OTP sequence.
* The deassert must be done before calling intel_dsi_device_ready, so for
* these devices we split the init OTP sequence into a deassert sequence and
* the actual init OTP part.
*/
static void fixup_mipi_sequences(struct drm_i915_private *dev_priv)
{
u8 *init_otp;
int len;
/* Limit this to VLV for now. */
if (!IS_VALLEYVIEW(dev_priv))
return;
/* Limit this to v1 vid-mode sequences */
if (dev_priv->vbt.dsi.config->is_cmd_mode ||
dev_priv->vbt.dsi.seq_version != 1)
return;
/* Only do this if there are otp and assert seqs and no deassert seq */
if (!dev_priv->vbt.dsi.sequence[MIPI_SEQ_INIT_OTP] ||
!dev_priv->vbt.dsi.sequence[MIPI_SEQ_ASSERT_RESET] ||
dev_priv->vbt.dsi.sequence[MIPI_SEQ_DEASSERT_RESET])
return;
/* The deassert-sequence ends at the first DSI packet */
len = get_init_otp_deassert_fragment_len(dev_priv);
if (!len)
return;
DRM_DEBUG_KMS("Using init OTP fragment to deassert reset\n");
/* Copy the fragment, update seq byte and terminate it */
init_otp = (u8 *)dev_priv->vbt.dsi.sequence[MIPI_SEQ_INIT_OTP];
dev_priv->vbt.dsi.deassert_seq = kmemdup(init_otp, len + 1, GFP_KERNEL);
if (!dev_priv->vbt.dsi.deassert_seq)
return;
dev_priv->vbt.dsi.deassert_seq[0] = MIPI_SEQ_DEASSERT_RESET;
dev_priv->vbt.dsi.deassert_seq[len] = MIPI_SEQ_ELEM_END;
/* Use the copy for deassert */
dev_priv->vbt.dsi.sequence[MIPI_SEQ_DEASSERT_RESET] =
dev_priv->vbt.dsi.deassert_seq;
/* Replace the last byte of the fragment with init OTP seq byte */
init_otp[len - 1] = MIPI_SEQ_INIT_OTP;
/* And make MIPI_MIPI_SEQ_INIT_OTP point to it */
dev_priv->vbt.dsi.sequence[MIPI_SEQ_INIT_OTP] = init_otp + len - 1;
}
static void
parse_mipi_sequence(struct drm_i915_private *dev_priv,
const struct bdb_header *bdb)
@ -1016,6 +1096,8 @@ parse_mipi_sequence(struct drm_i915_private *dev_priv,
dev_priv->vbt.dsi.size = seq_size;
dev_priv->vbt.dsi.seq_version = sequence->version;
fixup_mipi_sequences(dev_priv);
DRM_DEBUG_DRIVER("MIPI related VBT parsing complete\n");
return;
@ -1588,6 +1670,29 @@ void intel_bios_init(struct drm_i915_private *dev_priv)
pci_unmap_rom(pdev, bios);
}
/**
* intel_bios_cleanup - Free any resources allocated by intel_bios_init()
* @dev_priv: i915 device instance
*/
void intel_bios_cleanup(struct drm_i915_private *dev_priv)
{
kfree(dev_priv->vbt.child_dev);
dev_priv->vbt.child_dev = NULL;
dev_priv->vbt.child_dev_num = 0;
kfree(dev_priv->vbt.sdvo_lvds_vbt_mode);
dev_priv->vbt.sdvo_lvds_vbt_mode = NULL;
kfree(dev_priv->vbt.lfp_lvds_vbt_mode);
dev_priv->vbt.lfp_lvds_vbt_mode = NULL;
kfree(dev_priv->vbt.dsi.data);
dev_priv->vbt.dsi.data = NULL;
kfree(dev_priv->vbt.dsi.pps);
dev_priv->vbt.dsi.pps = NULL;
kfree(dev_priv->vbt.dsi.config);
dev_priv->vbt.dsi.config = NULL;
kfree(dev_priv->vbt.dsi.deassert_seq);
dev_priv->vbt.dsi.deassert_seq = NULL;
}
/**
* intel_bios_is_tv_present - is integrated TV present in VBT
* @dev_priv: i915 device instance

29
drivers/gpu/drm/i915/intel_breadcrumbs.c
View File

@ -594,29 +594,16 @@ void intel_engine_remove_wait(struct intel_engine_cs *engine,
spin_unlock_irq(&b->rb_lock);
}
static bool signal_valid(const struct drm_i915_gem_request *request)
{
return intel_wait_check_request(&request->signaling.wait, request);
}
static bool signal_complete(const struct drm_i915_gem_request *request)
{
if (!request)
return false;
/* If another process served as the bottom-half it may have already
* signalled that this wait is already completed.
*/
if (intel_wait_complete(&request->signaling.wait))
return signal_valid(request);
/* Carefully check if the request is complete, giving time for the
/*
* Carefully check if the request is complete, giving time for the
* seqno to be visible or if the GPU hung.
*/
if (__i915_request_irq_complete(request))
return true;
return false;
return __i915_request_irq_complete(request);
}
static struct drm_i915_gem_request *to_signaler(struct rb_node *rb)
@ -659,9 +646,13 @@ static int intel_breadcrumbs_signaler(void *arg)
request = i915_gem_request_get_rcu(request);
rcu_read_unlock();
if (signal_complete(request)) {
local_bh_disable();
dma_fence_signal(&request->fence);
local_bh_enable(); /* kick start the tasklets */
if (!test_bit(DMA_FENCE_FLAG_SIGNALED_BIT,
&request->fence.flags)) {
local_bh_disable();
dma_fence_signal(&request->fence);
GEM_BUG_ON(!i915_gem_request_completed(request));
local_bh_enable(); /* kick start the tasklets */
}
spin_lock_irq(&b->rb_lock);

8
drivers/gpu/drm/i915/intel_cdclk.c
View File

@ -1952,6 +1952,14 @@ int intel_crtc_compute_min_cdclk(const struct intel_crtc_state *crtc_state)
if (crtc_state->has_audio && INTEL_GEN(dev_priv) >= 9)
min_cdclk = max(2 * 96000, min_cdclk);
/*
* On Valleyview some DSI panels lose (v|h)sync when the clock is lower
* than 320000KHz.
*/
if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_DSI) &&
IS_VALLEYVIEW(dev_priv))
min_cdclk = max(320000, min_cdclk);
if (min_cdclk > dev_priv->max_cdclk_freq) {
DRM_DEBUG_KMS("required cdclk (%d kHz) exceeds max (%d kHz)\n",
min_cdclk, dev_priv->max_cdclk_freq);

26
drivers/gpu/drm/i915/intel_engine_cs.c
View File

@ -1458,7 +1458,9 @@ static bool ring_is_idle(struct intel_engine_cs *engine)
struct drm_i915_private *dev_priv = engine->i915;
bool idle = true;
intel_runtime_pm_get(dev_priv);
/* If the whole device is asleep, the engine must be idle */
if (!intel_runtime_pm_get_if_in_use(dev_priv))
return true;
/* First check that no commands are left in the ring */
if ((I915_READ_HEAD(engine) & HEAD_ADDR) !=
@ -1943,16 +1945,22 @@ intel_engine_lookup_user(struct drm_i915_private *i915, u8 class, u8 instance)
*/
int intel_enable_engine_stats(struct intel_engine_cs *engine)
{
struct intel_engine_execlists *execlists = &engine->execlists;
unsigned long flags;
int err = 0;
if (!intel_engine_supports_stats(engine))
return -ENODEV;
tasklet_disable(&execlists->tasklet);
spin_lock_irqsave(&engine->stats.lock, flags);
if (engine->stats.enabled == ~0)
goto busy;
if (unlikely(engine->stats.enabled == ~0)) {
err = -EBUSY;
goto unlock;
}
if (engine->stats.enabled++ == 0) {
struct intel_engine_execlists *execlists = &engine->execlists;
const struct execlist_port *port = execlists->port;
unsigned int num_ports = execlists_num_ports(execlists);
@ -1967,14 +1975,12 @@ int intel_enable_engine_stats(struct intel_engine_cs *engine)
if (engine->stats.active)
engine->stats.start = engine->stats.enabled_at;
}
unlock:
spin_unlock_irqrestore(&engine->stats.lock, flags);
tasklet_enable(&execlists->tasklet);
return 0;
busy:
spin_unlock_irqrestore(&engine->stats.lock, flags);
return -EBUSY;
return err;
}
static ktime_t __intel_engine_get_busy_time(struct intel_engine_cs *engine)

14
drivers/gpu/drm/i915/intel_ringbuffer.h
View File

@ -366,20 +366,6 @@ struct intel_engine_cs {
*/
#define I915_ENGINE_SAMPLE_MAX (I915_SAMPLE_SEMA + 1)
struct i915_pmu_sample sample[I915_ENGINE_SAMPLE_MAX];
/**
* @busy_stats: Has enablement of engine stats tracking been
* requested.
*/
bool busy_stats;
/**
* @disable_busy_stats: Work item for busy stats disabling.
*
* Same as with @enable_busy_stats action, with the difference
* that we delay it in case there are rapid enable-disable
* actions, which can happen during tool startup (like perf
* stat).
*/
struct delayed_work disable_busy_stats;
} pmu;
/*

6
drivers/gpu/drm/nouveau/nvkm/subdev/therm/base.c
View File

@ -301,7 +301,7 @@ nvkm_therm_attr_set(struct nvkm_therm *therm,
void
nvkm_therm_clkgate_enable(struct nvkm_therm *therm)
{
if (!therm->func->clkgate_enable || !therm->clkgating_enabled)
if (!therm || !therm->func->clkgate_enable || !therm->clkgating_enabled)
return;
nvkm_debug(&therm->subdev,
@ -312,7 +312,7 @@ nvkm_therm_clkgate_enable(struct nvkm_therm *therm)
void
nvkm_therm_clkgate_fini(struct nvkm_therm *therm, bool suspend)
{
if (!therm->func->clkgate_fini || !therm->clkgating_enabled)
if (!therm || !therm->func->clkgate_fini || !therm->clkgating_enabled)
return;
nvkm_debug(&therm->subdev,
@ -395,7 +395,7 @@ void
nvkm_therm_clkgate_init(struct nvkm_therm *therm,
const struct nvkm_therm_clkgate_pack *p)
{
if (!therm->func->clkgate_init || !therm->clkgating_enabled)
if (!therm || !therm->func->clkgate_init || !therm->clkgating_enabled)
return;
therm->func->clkgate_init(therm, p);

5
drivers/hwmon/k10temp.c
View File

@ -129,7 +129,10 @@ static ssize_t temp1_input_show(struct device *dev,
data->read_tempreg(data->pdev, &regval);
temp = (regval >> 21) * 125;
temp -= data->temp_offset;
if (temp > data->temp_offset)
temp -= data->temp_offset;
else
temp = 0;
return sprintf(buf, "%u\n", temp);
}

3
drivers/irqchip/irq-bcm7038-l1.c
View File

@ -339,9 +339,6 @@ int __init bcm7038_l1_of_init(struct device_node *dn,
goto out_unmap;
}
pr_info("registered BCM7038 L1 intc (mem: 0x%p, IRQs: %d)\n",
intc->cpus[0]->map_base, IRQS_PER_WORD * intc->n_words);
return 0;
out_unmap:

3
drivers/irqchip/irq-bcm7120-l2.c
View File

@ -318,9 +318,6 @@ static int __init bcm7120_l2_intc_probe(struct device_node *dn,
}
}
pr_info("registered %s intc (mem: 0x%p, parent IRQ(s): %d)\n",
intc_name, data->map_base[0], data->num_parent_irqs);
return 0;
out_free_domain:

3
drivers/irqchip/irq-brcmstb-l2.c
View File

@ -262,9 +262,6 @@ static int __init brcmstb_l2_intc_of_init(struct device_node *np,
ct->chip.irq_set_wake = irq_gc_set_wake;
}
pr_info("registered L2 intc (mem: 0x%p, parent irq: %d)\n",
base, parent_irq);
return 0;
out_free_domain:

46
drivers/irqchip/irq-gic-v2m.c
View File

@ -94,7 +94,7 @@ static struct irq_chip gicv2m_msi_irq_chip = {
static struct msi_domain_info gicv2m_msi_domain_info = {
.flags = (MSI_FLAG_USE_DEF_DOM_OPS | MSI_FLAG_USE_DEF_CHIP_OPS |
MSI_FLAG_PCI_MSIX),
MSI_FLAG_PCI_MSIX | MSI_FLAG_MULTI_PCI_MSI),
.chip = &gicv2m_msi_irq_chip,
};
@ -155,18 +155,12 @@ static int gicv2m_irq_gic_domain_alloc(struct irq_domain *domain,
return 0;
}
static void gicv2m_unalloc_msi(struct v2m_data *v2m, unsigned int hwirq)
static void gicv2m_unalloc_msi(struct v2m_data *v2m, unsigned int hwirq,
int nr_irqs)
{
int pos;
pos = hwirq - v2m->spi_start;
if (pos < 0 || pos >= v2m->nr_spis) {
pr_err("Failed to teardown msi. Invalid hwirq %d\n", hwirq);
return;
}
spin_lock(&v2m_lock);
__clear_bit(pos, v2m->bm);
bitmap_release_region(v2m->bm, hwirq - v2m->spi_start,
get_count_order(nr_irqs));
spin_unlock(&v2m_lock);
}
@ -174,13 +168,13 @@ static int gicv2m_irq_domain_alloc(struct irq_domain *domain, unsigned int virq,
unsigned int nr_irqs, void *args)
{
struct v2m_data *v2m = NULL, *tmp;
int hwirq, offset, err = 0;
int hwirq, offset, i, err = 0;
spin_lock(&v2m_lock);
list_for_each_entry(tmp, &v2m_nodes, entry) {
offset = find_first_zero_bit(tmp->bm, tmp->nr_spis);
if (offset < tmp->nr_spis) {
__set_bit(offset, tmp->bm);
offset = bitmap_find_free_region(tmp->bm, tmp->nr_spis,
get_count_order(nr_irqs));
if (offset >= 0) {
v2m = tmp;
break;
}
@ -192,16 +186,21 @@ static int gicv2m_irq_domain_alloc(struct irq_domain *domain, unsigned int virq,
hwirq = v2m->spi_start + offset;
err = gicv2m_irq_gic_domain_alloc(domain, virq, hwirq);
if (err) {
gicv2m_unalloc_msi(v2m, hwirq);
return err;
for (i = 0; i < nr_irqs; i++) {
err = gicv2m_irq_gic_domain_alloc(domain, virq + i, hwirq + i);
if (err)
goto fail;
irq_domain_set_hwirq_and_chip(domain, virq + i, hwirq + i,
&gicv2m_irq_chip, v2m);
}
irq_domain_set_hwirq_and_chip(domain, virq, hwirq,
&gicv2m_irq_chip, v2m);
return 0;
fail:
irq_domain_free_irqs_parent(domain, virq, nr_irqs);
gicv2m_unalloc_msi(v2m, hwirq, get_count_order(nr_irqs));
return err;
}
static void gicv2m_irq_domain_free(struct irq_domain *domain,
@ -210,8 +209,7 @@ static void gicv2m_irq_domain_free(struct irq_domain *domain,
struct irq_data *d = irq_domain_get_irq_data(domain, virq);
struct v2m_data *v2m = irq_data_get_irq_chip_data(d);
BUG_ON(nr_irqs != 1);
gicv2m_unalloc_msi(v2m, d->hwirq);
gicv2m_unalloc_msi(v2m, d->hwirq, nr_irqs);
irq_domain_free_irqs_parent(domain, virq, nr_irqs);
}

2
drivers/irqchip/irq-gic-v3-its-pci-msi.c
View File

@ -132,6 +132,8 @@ static int __init its_pci_of_msi_init(void)
for (np = of_find_matching_node(NULL, its_device_id); np;
np = of_find_matching_node(np, its_device_id)) {
if (!of_device_is_available(np))
continue;
if (!of_property_read_bool(np, "msi-controller"))
continue;

2
drivers/irqchip/irq-gic-v3-its-platform-msi.c
View File

@ -154,6 +154,8 @@ static void __init its_pmsi_of_init(void)
for (np = of_find_matching_node(NULL, its_device_id); np;
np = of_find_matching_node(np, its_device_id)) {
if (!of_device_is_available(np))
continue;
if (!of_property_read_bool(np, "msi-controller"))
continue;

2
drivers/irqchip/irq-gic-v3-its.c
View File

@ -3314,6 +3314,8 @@ static int __init its_of_probe(struct device_node *node)
for (np = of_find_matching_node(node, its_device_id); np;
np = of_find_matching_node(np, its_device_id)) {
if (!of_device_is_available(np))
continue;
if (!of_property_read_bool(np, "msi-controller")) {
pr_warn("%pOF: no msi-controller property, ITS ignored\n",
np);

4
drivers/irqchip/irq-gic-v3.c
View File

@ -673,7 +673,7 @@ static void gic_send_sgi(u64 cluster_id, u16 tlist, unsigned int irq)
MPIDR_TO_SGI_RS(cluster_id) |
tlist << ICC_SGI1R_TARGET_LIST_SHIFT);
pr_debug("CPU%d: ICC_SGI1R_EL1 %llx\n", smp_processor_id(), val);
pr_devel("CPU%d: ICC_SGI1R_EL1 %llx\n", smp_processor_id(), val);
gic_write_sgi1r(val);
}
@ -688,7 +688,7 @@ static void gic_raise_softirq(const struct cpumask *mask, unsigned int irq)
* Ensure that stores to Normal memory are visible to the
* other CPUs before issuing the IPI.
*/
smp_wmb();
wmb();
for_each_cpu(cpu, mask) {
u64 cluster_id = MPIDR_TO_SGI_CLUSTER_ID(cpu_logical_map(cpu));

2
drivers/irqchip/irq-mips-gic.c
View File

@ -424,8 +424,6 @@ static int gic_shared_irq_domain_map(struct irq_domain *d, unsigned int virq,
spin_lock_irqsave(&gic_lock, flags);
write_gic_map_pin(intr, GIC_MAP_PIN_MAP_TO_PIN | gic_cpu_pin);
write_gic_map_vp(intr, BIT(mips_cm_vp_id(cpu)));
gic_clear_pcpu_masks(intr);
set_bit(intr, per_cpu_ptr(pcpu_masks, cpu));
irq_data_update_effective_affinity(data, cpumask_of(cpu));
spin_unlock_irqrestore(&gic_lock, flags);

1
drivers/macintosh/macio_asic.c
View File

@ -375,6 +375,7 @@ static struct macio_dev * macio_add_one_device(struct macio_chip *chip,
dev->ofdev.dev.of_node = np;
dev->ofdev.archdata.dma_mask = 0xffffffffUL;
dev->ofdev.dev.dma_mask = &dev->ofdev.archdata.dma_mask;
dev->ofdev.dev.coherent_dma_mask = dev->ofdev.archdata.dma_mask;
dev->ofdev.dev.parent = parent;
dev->ofdev.dev.bus = &macio_bus_type;
dev->ofdev.dev.release = macio_release_dev;

3
drivers/md/dm.c
View File

@ -903,7 +903,8 @@ static void dec_pending(struct dm_io *io, blk_status_t error)
queue_io(md, bio);
} else {
/* done with normal IO or empty flush */
bio->bi_status = io_error;
if (io_error)
bio->bi_status = io_error;
bio_endio(bio);
}
}

3
drivers/mmc/host/bcm2835.c
View File

@ -1265,7 +1265,8 @@ static int bcm2835_add_host(struct bcm2835_host *host)
char pio_limit_string[20];
int ret;
mmc->f_max = host->max_clk;
if (!mmc->f_max || mmc->f_max > host->max_clk)
mmc->f_max = host->max_clk;
mmc->f_min = host->max_clk / SDCDIV_MAX_CDIV;
mmc->max_busy_timeout = ~0 / (mmc->f_max / 1000);

19
drivers/mmc/host/meson-gx-mmc.c
View File

@ -717,22 +717,6 @@ static int meson_mmc_clk_phase_tuning(struct mmc_host *mmc, u32 opcode,
static int meson_mmc_execute_tuning(struct mmc_host *mmc, u32 opcode)
{
struct meson_host *host = mmc_priv(mmc);
int ret;
/*
* If this is the initial tuning, try to get a sane Rx starting
* phase before doing the actual tuning.
*/
if (!mmc->doing_retune) {
ret = meson_mmc_clk_phase_tuning(mmc, opcode, host->rx_clk);
if (ret)
return ret;
}
ret = meson_mmc_clk_phase_tuning(mmc, opcode, host->tx_clk);
if (ret)
return ret;
return meson_mmc_clk_phase_tuning(mmc, opcode, host->rx_clk);
}
@ -763,9 +747,8 @@ static void meson_mmc_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
if (!IS_ERR(mmc->supply.vmmc))
mmc_regulator_set_ocr(mmc, mmc->supply.vmmc, ios->vdd);
/* Reset phases */
/* Reset rx phase */
clk_set_phase(host->rx_clk, 0);
clk_set_phase(host->tx_clk, 270);
break;

2
drivers/mtd/nand/Kconfig
View File

@ -328,7 +328,7 @@ config MTD_NAND_MARVELL
tristate "NAND controller support on Marvell boards"
depends on PXA3xx || ARCH_MMP || PLAT_ORION || ARCH_MVEBU || \
COMPILE_TEST
depends on HAS_IOMEM
depends on HAS_IOMEM && HAS_DMA
help
This enables the NAND flash controller driver for Marvell boards,
including:

6
drivers/mtd/nand/vf610_nfc.c
View File

@ -752,10 +752,8 @@ static int vf610_nfc_probe(struct platform_device *pdev)
if (mtd->oobsize > 64)
mtd->oobsize = 64;
/*
* mtd->ecclayout is not specified here because we're using the
* default large page ECC layout defined in NAND core.
*/
/* Use default large page ECC layout defined in NAND core */
mtd_set_ooblayout(mtd, &nand_ooblayout_lp_ops);
if (chip->ecc.strength == 32) {
nfc->ecc_mode = ECC_60_BYTE;
chip->ecc.bytes = 60;

45
drivers/nvme/host/core.c
View File

@ -120,8 +120,12 @@ int nvme_reset_ctrl_sync(struct nvme_ctrl *ctrl)
int ret;
ret = nvme_reset_ctrl(ctrl);
if (!ret)
if (!ret) {
flush_work(&ctrl->reset_work);
if (ctrl->state != NVME_CTRL_LIVE)
ret = -ENETRESET;
}
return ret;
}
EXPORT_SYMBOL_GPL(nvme_reset_ctrl_sync);
@ -265,7 +269,7 @@ bool nvme_change_ctrl_state(struct nvme_ctrl *ctrl,
switch (new_state) {
case NVME_CTRL_ADMIN_ONLY:
switch (old_state) {
case NVME_CTRL_RECONNECTING:
case NVME_CTRL_CONNECTING:
changed = true;
/* FALLTHRU */
default:
@ -276,7 +280,7 @@ bool nvme_change_ctrl_state(struct nvme_ctrl *ctrl,
switch (old_state) {
case NVME_CTRL_NEW:
case NVME_CTRL_RESETTING:
case NVME_CTRL_RECONNECTING:
case NVME_CTRL_CONNECTING:
changed = true;
/* FALLTHRU */
default:
@ -294,9 +298,9 @@ bool nvme_change_ctrl_state(struct nvme_ctrl *ctrl,
break;
}
break;
case NVME_CTRL_RECONNECTING:
case NVME_CTRL_CONNECTING:
switch (old_state) {
case NVME_CTRL_LIVE:
case NVME_CTRL_NEW:
case NVME_CTRL_RESETTING:
changed = true;
/* FALLTHRU */
@ -309,7 +313,7 @@ bool nvme_change_ctrl_state(struct nvme_ctrl *ctrl,
case NVME_CTRL_LIVE:
case NVME_CTRL_ADMIN_ONLY:
case NVME_CTRL_RESETTING:
case NVME_CTRL_RECONNECTING:
case NVME_CTRL_CONNECTING:
changed = true;
/* FALLTHRU */
default:
@ -518,9 +522,11 @@ static blk_status_t nvme_setup_discard(struct nvme_ns *ns, struct request *req,
u64 slba = nvme_block_nr(ns, bio->bi_iter.bi_sector);
u32 nlb = bio->bi_iter.bi_size >> ns->lba_shift;
range[n].cattr = cpu_to_le32(0);
range[n].nlb = cpu_to_le32(nlb);
range[n].slba = cpu_to_le64(slba);
if (n < segments) {
range[n].cattr = cpu_to_le32(0);
range[n].nlb = cpu_to_le32(nlb);
range[n].slba = cpu_to_le64(slba);
}
n++;
}
@ -794,13 +800,9 @@ static void nvme_keep_alive_end_io(struct request *rq, blk_status_t status)
static int nvme_keep_alive(struct nvme_ctrl *ctrl)
{
struct nvme_command c;
struct request *rq;
memset(&c, 0, sizeof(c));
c.common.opcode = nvme_admin_keep_alive;
rq = nvme_alloc_request(ctrl->admin_q, &c, BLK_MQ_REQ_RESERVED,
rq = nvme_alloc_request(ctrl->admin_q, &ctrl->ka_cmd, BLK_MQ_REQ_RESERVED,
NVME_QID_ANY);
if (IS_ERR(rq))
return PTR_ERR(rq);
@ -832,6 +834,8 @@ void nvme_start_keep_alive(struct nvme_ctrl *ctrl)
return;
INIT_DELAYED_WORK(&ctrl->ka_work, nvme_keep_alive_work);
memset(&ctrl->ka_cmd, 0, sizeof(ctrl->ka_cmd));
ctrl->ka_cmd.common.opcode = nvme_admin_keep_alive;
schedule_delayed_work(&ctrl->ka_work, ctrl->kato * HZ);
}
EXPORT_SYMBOL_GPL(nvme_start_keep_alive);
@ -1117,14 +1121,19 @@ static u32 nvme_passthru_start(struct nvme_ctrl *ctrl, struct nvme_ns *ns,
static void nvme_update_formats(struct nvme_ctrl *ctrl)
{
struct nvme_ns *ns;
struct nvme_ns *ns, *next;
LIST_HEAD(rm_list);
mutex_lock(&ctrl->namespaces_mutex);
list_for_each_entry(ns, &ctrl->namespaces, list) {
if (ns->disk && nvme_revalidate_disk(ns->disk))
nvme_ns_remove(ns);
if (ns->disk && nvme_revalidate_disk(ns->disk)) {
list_move_tail(&ns->list, &rm_list);
}
}
mutex_unlock(&ctrl->namespaces_mutex);
list_for_each_entry_safe(ns, next, &rm_list, list)
nvme_ns_remove(ns);
}
static void nvme_passthru_end(struct nvme_ctrl *ctrl, u32 effects)
@ -2687,7 +2696,7 @@ static ssize_t nvme_sysfs_show_state(struct device *dev,
[NVME_CTRL_LIVE] = "live",
[NVME_CTRL_ADMIN_ONLY] = "only-admin",
[NVME_CTRL_RESETTING] = "resetting",
[NVME_CTRL_RECONNECTING]= "reconnecting",
[NVME_CTRL_CONNECTING] = "connecting",
[NVME_CTRL_DELETING] = "deleting",
[NVME_CTRL_DEAD] = "dead",
};

9
drivers/nvme/host/fabrics.h
View File

@ -171,13 +171,14 @@ static inline blk_status_t nvmf_check_init_req(struct nvme_ctrl *ctrl,
cmd->common.opcode != nvme_fabrics_command ||
cmd->fabrics.fctype != nvme_fabrics_type_connect) {
/*
* Reconnecting state means transport disruption, which can take
* a long time and even might fail permanently, fail fast to
* give upper layers a chance to failover.
* Connecting state means transport disruption or initial
* establishment, which can take a long time and even might
* fail permanently, fail fast to give upper layers a chance
* to failover.
* Deleting state means that the ctrl will never accept commands
* again, fail it permanently.
*/
if (ctrl->state == NVME_CTRL_RECONNECTING ||
if (ctrl->state == NVME_CTRL_CONNECTING ||
ctrl->state == NVME_CTRL_DELETING) {
nvme_req(rq)->status = NVME_SC_ABORT_REQ;
return BLK_STS_IOERR;

157
drivers/nvme/host/fc.c
View File

@ -55,9 +55,7 @@ struct nvme_fc_queue {
enum nvme_fcop_flags {
FCOP_FLAGS_TERMIO = (1 << 0),
FCOP_FLAGS_RELEASED = (1 << 1),
FCOP_FLAGS_COMPLETE = (1 << 2),
FCOP_FLAGS_AEN = (1 << 3),
FCOP_FLAGS_AEN = (1 << 1),
};
struct nvmefc_ls_req_op {
@ -532,7 +530,7 @@ nvme_fc_resume_controller(struct nvme_fc_ctrl *ctrl)
{
switch (ctrl->ctrl.state) {
case NVME_CTRL_NEW:
case NVME_CTRL_RECONNECTING:
case NVME_CTRL_CONNECTING:
/*
* As all reconnects were suppressed, schedule a
* connect.
@ -777,7 +775,7 @@ nvme_fc_ctrl_connectivity_loss(struct nvme_fc_ctrl *ctrl)
}
break;
case NVME_CTRL_RECONNECTING:
case NVME_CTRL_CONNECTING:
/*
* The association has already been terminated and the
* controller is attempting reconnects. No need to do anything
@ -1470,7 +1468,6 @@ nvme_fc_xmt_disconnect_assoc(struct nvme_fc_ctrl *ctrl)
/* *********************** NVME Ctrl Routines **************************** */
static void __nvme_fc_final_op_cleanup(struct request *rq);
static void nvme_fc_error_recovery(struct nvme_fc_ctrl *ctrl, char *errmsg);
static int
@ -1512,13 +1509,19 @@ nvme_fc_exit_request(struct blk_mq_tag_set *set, struct request *rq,
static int
__nvme_fc_abort_op(struct nvme_fc_ctrl *ctrl, struct nvme_fc_fcp_op *op)
{
int state;
unsigned long flags;
int opstate;
state = atomic_xchg(&op->state, FCPOP_STATE_ABORTED);
if (state != FCPOP_STATE_ACTIVE) {
atomic_set(&op->state, state);
spin_lock_irqsave(&ctrl->lock, flags);
opstate = atomic_xchg(&op->state, FCPOP_STATE_ABORTED);
if (opstate != FCPOP_STATE_ACTIVE)
atomic_set(&op->state, opstate);
else if (ctrl->flags & FCCTRL_TERMIO)
ctrl->iocnt++;
spin_unlock_irqrestore(&ctrl->lock, flags);
if (opstate != FCPOP_STATE_ACTIVE)
return -ECANCELED;
}
ctrl->lport->ops->fcp_abort(&ctrl->lport->localport,
&ctrl->rport->remoteport,
@ -1532,60 +1535,26 @@ static void
nvme_fc_abort_aen_ops(struct nvme_fc_ctrl *ctrl)
{
struct nvme_fc_fcp_op *aen_op = ctrl->aen_ops;
unsigned long flags;
int i, ret;
int i;
for (i = 0; i < NVME_NR_AEN_COMMANDS; i++, aen_op++) {
if (atomic_read(&aen_op->state) != FCPOP_STATE_ACTIVE)
continue;
spin_lock_irqsave(&ctrl->lock, flags);
if (ctrl->flags & FCCTRL_TERMIO) {
ctrl->iocnt++;
aen_op->flags |= FCOP_FLAGS_TERMIO;
}
spin_unlock_irqrestore(&ctrl->lock, flags);
ret = __nvme_fc_abort_op(ctrl, aen_op);
if (ret) {
/*
* if __nvme_fc_abort_op failed the io wasn't
* active. Thus this call path is running in
* parallel to the io complete. Treat as non-error.
*/
/* back out the flags/counters */
spin_lock_irqsave(&ctrl->lock, flags);
if (ctrl->flags & FCCTRL_TERMIO)
ctrl->iocnt--;
aen_op->flags &= ~FCOP_FLAGS_TERMIO;
spin_unlock_irqrestore(&ctrl->lock, flags);
return;
}
}
for (i = 0; i < NVME_NR_AEN_COMMANDS; i++, aen_op++)
__nvme_fc_abort_op(ctrl, aen_op);
}
static inline int
static inline void
__nvme_fc_fcpop_chk_teardowns(struct nvme_fc_ctrl *ctrl,
struct nvme_fc_fcp_op *op)
struct nvme_fc_fcp_op *op, int opstate)
{
unsigned long flags;
bool complete_rq = false;
spin_lock_irqsave(&ctrl->lock, flags);
if (unlikely(op->flags & FCOP_FLAGS_TERMIO)) {
if (opstate == FCPOP_STATE_ABORTED) {
spin_lock_irqsave(&ctrl->lock, flags);
if (ctrl->flags & FCCTRL_TERMIO) {
if (!--ctrl->iocnt)
wake_up(&ctrl->ioabort_wait);
}
spin_unlock_irqrestore(&ctrl->lock, flags);
}
if (op->flags & FCOP_FLAGS_RELEASED)
complete_rq = true;
else
op->flags |= FCOP_FLAGS_COMPLETE;
spin_unlock_irqrestore(&ctrl->lock, flags);
return complete_rq;
}
static void
@ -1601,6 +1570,7 @@ nvme_fc_fcpio_done(struct nvmefc_fcp_req *req)
__le16 status = cpu_to_le16(NVME_SC_SUCCESS << 1);
union nvme_result result;
bool terminate_assoc = true;
int opstate;
/*
* WARNING:
@ -1639,11 +1609,12 @@ nvme_fc_fcpio_done(struct nvmefc_fcp_req *req)
* association to be terminated.
*/
opstate = atomic_xchg(&op->state, FCPOP_STATE_COMPLETE);
fc_dma_sync_single_for_cpu(ctrl->lport->dev, op->fcp_req.rspdma,
sizeof(op->rsp_iu), DMA_FROM_DEVICE);
if (atomic_read(&op->state) == FCPOP_STATE_ABORTED ||
op->flags & FCOP_FLAGS_TERMIO)
if (opstate == FCPOP_STATE_ABORTED)
status = cpu_to_le16(NVME_SC_ABORT_REQ << 1);
else if (freq->status)
status = cpu_to_le16(NVME_SC_INTERNAL << 1);
@ -1708,7 +1679,7 @@ nvme_fc_fcpio_done(struct nvmefc_fcp_req *req)
done:
if (op->flags & FCOP_FLAGS_AEN) {
nvme_complete_async_event(&queue->ctrl->ctrl, status, &result);
__nvme_fc_fcpop_chk_teardowns(ctrl, op);
__nvme_fc_fcpop_chk_teardowns(ctrl, op, opstate);
atomic_set(&op->state, FCPOP_STATE_IDLE);
op->flags = FCOP_FLAGS_AEN; /* clear other flags */
nvme_fc_ctrl_put(ctrl);
@ -1722,13 +1693,11 @@ nvme_fc_fcpio_done(struct nvmefc_fcp_req *req)
if (status &&
(blk_queue_dying(rq->q) ||
ctrl->ctrl.state == NVME_CTRL_NEW ||
ctrl->ctrl.state == NVME_CTRL_RECONNECTING))
ctrl->ctrl.state == NVME_CTRL_CONNECTING))
status |= cpu_to_le16(NVME_SC_DNR << 1);
if (__nvme_fc_fcpop_chk_teardowns(ctrl, op))
__nvme_fc_final_op_cleanup(rq);
else
nvme_end_request(rq, status, result);
__nvme_fc_fcpop_chk_teardowns(ctrl, op, opstate);
nvme_end_request(rq, status, result);
check_error:
if (terminate_assoc)
@ -2415,46 +2384,16 @@ nvme_fc_submit_async_event(struct nvme_ctrl *arg)
}
static void
__nvme_fc_final_op_cleanup(struct request *rq)
nvme_fc_complete_rq(struct request *rq)
{
struct nvme_fc_fcp_op *op = blk_mq_rq_to_pdu(rq);
struct nvme_fc_ctrl *ctrl = op->ctrl;
atomic_set(&op->state, FCPOP_STATE_IDLE);
op->flags &= ~(FCOP_FLAGS_TERMIO | FCOP_FLAGS_RELEASED |
FCOP_FLAGS_COMPLETE);
nvme_fc_unmap_data(ctrl, rq, op);
nvme_complete_rq(rq);
nvme_fc_ctrl_put(ctrl);
}
static void
nvme_fc_complete_rq(struct request *rq)
{
struct nvme_fc_fcp_op *op = blk_mq_rq_to_pdu(rq);
struct nvme_fc_ctrl *ctrl = op->ctrl;
unsigned long flags;
bool completed = false;
/*
* the core layer, on controller resets after calling
* nvme_shutdown_ctrl(), calls complete_rq without our
* calling blk_mq_complete_request(), thus there may still
* be live i/o outstanding with the LLDD. Means transport has
* to track complete calls vs fcpio_done calls to know what
* path to take on completes and dones.
*/
spin_lock_irqsave(&ctrl->lock, flags);
if (op->flags & FCOP_FLAGS_COMPLETE)
completed = true;
else
op->flags |= FCOP_FLAGS_RELEASED;
spin_unlock_irqrestore(&ctrl->lock, flags);
if (completed)
__nvme_fc_final_op_cleanup(rq);
}
/*
@ -2476,35 +2415,11 @@ nvme_fc_terminate_exchange(struct request *req, void *data, bool reserved)
struct nvme_ctrl *nctrl = data;
struct nvme_fc_ctrl *ctrl = to_fc_ctrl(nctrl);
struct nvme_fc_fcp_op *op = blk_mq_rq_to_pdu(req);
unsigned long flags;
int status;
if (!blk_mq_request_started(req))
return;
spin_lock_irqsave(&ctrl->lock, flags);
if (ctrl->flags & FCCTRL_TERMIO) {
ctrl->iocnt++;
op->flags |= FCOP_FLAGS_TERMIO;
}
spin_unlock_irqrestore(&ctrl->lock, flags);
status = __nvme_fc_abort_op(ctrl, op);
if (status) {
/*
* if __nvme_fc_abort_op failed the io wasn't
* active. Thus this call path is running in
* parallel to the io complete. Treat as non-error.
*/
/* back out the flags/counters */
spin_lock_irqsave(&ctrl->lock, flags);
if (ctrl->flags & FCCTRL_TERMIO)
ctrl->iocnt--;
op->flags &= ~FCOP_FLAGS_TERMIO;
spin_unlock_irqrestore(&ctrl->lock, flags);
return;
}
__nvme_fc_abort_op(ctrl, op);
}
@ -2943,7 +2858,7 @@ nvme_fc_reconnect_or_delete(struct nvme_fc_ctrl *ctrl, int status)
unsigned long recon_delay = ctrl->ctrl.opts->reconnect_delay * HZ;
bool recon = true;
if (ctrl->ctrl.state != NVME_CTRL_RECONNECTING)
if (ctrl->ctrl.state != NVME_CTRL_CONNECTING)
return;
if (portptr->port_state == FC_OBJSTATE_ONLINE)
@ -2991,10 +2906,10 @@ nvme_fc_reset_ctrl_work(struct work_struct *work)
/* will block will waiting for io to terminate */
nvme_fc_delete_association(ctrl);
if (!nvme_change_ctrl_state(&ctrl->ctrl, NVME_CTRL_RECONNECTING)) {
if (!nvme_change_ctrl_state(&ctrl->ctrl, NVME_CTRL_CONNECTING)) {
dev_err(ctrl->ctrl.device,
"NVME-FC{%d}: error_recovery: Couldn't change state "
"to RECONNECTING\n", ctrl->cnum);
"to CONNECTING\n", ctrl->cnum);
return;
}
@ -3195,7 +3110,7 @@ nvme_fc_init_ctrl(struct device *dev, struct nvmf_ctrl_options *opts,
* transport errors (frame drop, LS failure) inherently must kill
* the association. The transport is coded so that any command used
* to create the association (prior to a LIVE state transition
* while NEW or RECONNECTING) will fail if it completes in error or
* while NEW or CONNECTING) will fail if it completes in error or
* times out.
*
* As such: as the connect request was mostly likely due to a

3
drivers/nvme/host/nvme.h
View File

@ -123,7 +123,7 @@ enum nvme_ctrl_state {
NVME_CTRL_LIVE,
NVME_CTRL_ADMIN_ONLY, /* Only admin queue live */
NVME_CTRL_RESETTING,
NVME_CTRL_RECONNECTING,
NVME_CTRL_CONNECTING,
NVME_CTRL_DELETING,
NVME_CTRL_DEAD,
};
@ -183,6 +183,7 @@ struct nvme_ctrl {
struct work_struct scan_work;
struct work_struct async_event_work;
struct delayed_work ka_work;
struct nvme_command ka_cmd;
struct work_struct fw_act_work;
/* Power saving configuration */

39
drivers/nvme/host/pci.c
View File

@ -1141,7 +1141,7 @@ static bool nvme_should_reset(struct nvme_dev *dev, u32 csts)
/* If there is a reset/reinit ongoing, we shouldn't reset again. */
switch (dev->ctrl.state) {
case NVME_CTRL_RESETTING:
case NVME_CTRL_RECONNECTING:
case NVME_CTRL_CONNECTING:
return false;
default:
break;
@ -1215,13 +1215,17 @@ static enum blk_eh_timer_return nvme_timeout(struct request *req, bool reserved)
* cancellation error. All outstanding requests are completed on
* shutdown, so we return BLK_EH_HANDLED.
*/
if (dev->ctrl.state == NVME_CTRL_RESETTING) {
switch (dev->ctrl.state) {
case NVME_CTRL_CONNECTING:
case NVME_CTRL_RESETTING:
dev_warn(dev->ctrl.device,
"I/O %d QID %d timeout, disable controller\n",
req->tag, nvmeq->qid);
nvme_dev_disable(dev, false);
nvme_req(req)->flags |= NVME_REQ_CANCELLED;
return BLK_EH_HANDLED;
default:
break;
}
/*
@ -1364,18 +1368,14 @@ static int nvme_cmb_qdepth(struct nvme_dev *dev, int nr_io_queues,
static int nvme_alloc_sq_cmds(struct nvme_dev *dev, struct nvme_queue *nvmeq,
int qid, int depth)
{
if (qid && dev->cmb && use_cmb_sqes && (dev->cmbsz & NVME_CMBSZ_SQS)) {
unsigned offset = (qid - 1) * roundup(SQ_SIZE(depth),
dev->ctrl.page_size);
nvmeq->sq_dma_addr = dev->cmb_bus_addr + offset;
nvmeq->sq_cmds_io = dev->cmb + offset;
} else {
nvmeq->sq_cmds = dma_alloc_coherent(dev->dev, SQ_SIZE(depth),
&nvmeq->sq_dma_addr, GFP_KERNEL);
if (!nvmeq->sq_cmds)
return -ENOMEM;
}
/* CMB SQEs will be mapped before creation */
if (qid && dev->cmb && use_cmb_sqes && (dev->cmbsz & NVME_CMBSZ_SQS))
return 0;
nvmeq->sq_cmds = dma_alloc_coherent(dev->dev, SQ_SIZE(depth),
&nvmeq->sq_dma_addr, GFP_KERNEL);
if (!nvmeq->sq_cmds)
return -ENOMEM;
return 0;
}
@ -1449,6 +1449,13 @@ static int nvme_create_queue(struct nvme_queue *nvmeq, int qid)
struct nvme_dev *dev = nvmeq->dev;
int result;
if (dev->cmb && use_cmb_sqes && (dev->cmbsz & NVME_CMBSZ_SQS)) {
unsigned offset = (qid - 1) * roundup(SQ_SIZE(nvmeq->q_depth),
dev->ctrl.page_size);
nvmeq->sq_dma_addr = dev->cmb_bus_addr + offset;
nvmeq->sq_cmds_io = dev->cmb + offset;
}
nvmeq->cq_vector = qid - 1;
result = adapter_alloc_cq(dev, qid, nvmeq);
if (result < 0)
@ -2288,12 +2295,12 @@ static void nvme_reset_work(struct work_struct *work)
nvme_dev_disable(dev, false);
/*
* Introduce RECONNECTING state from nvme-fc/rdma transports to mark the
* Introduce CONNECTING state from nvme-fc/rdma transports to mark the
* initializing procedure here.
*/
if (!nvme_change_ctrl_state(&dev->ctrl, NVME_CTRL_RECONNECTING)) {
if (!nvme_change_ctrl_state(&dev->ctrl, NVME_CTRL_CONNECTING)) {
dev_warn(dev->ctrl.device,
"failed to mark controller RECONNECTING\n");
"failed to mark controller CONNECTING\n");
goto out;
}

16
drivers/nvme/host/rdma.c
View File

@ -887,7 +887,7 @@ static void nvme_rdma_free_ctrl(struct nvme_ctrl *nctrl)
static void nvme_rdma_reconnect_or_remove(struct nvme_rdma_ctrl *ctrl)
{
/* If we are resetting/deleting then do nothing */
if (ctrl->ctrl.state != NVME_CTRL_RECONNECTING) {
if (ctrl->ctrl.state != NVME_CTRL_CONNECTING) {
WARN_ON_ONCE(ctrl->ctrl.state == NVME_CTRL_NEW ||
ctrl->ctrl.state == NVME_CTRL_LIVE);
return;
@ -973,7 +973,7 @@ static void nvme_rdma_error_recovery_work(struct work_struct *work)
blk_mq_unquiesce_queue(ctrl->ctrl.admin_q);
nvme_start_queues(&ctrl->ctrl);
if (!nvme_change_ctrl_state(&ctrl->ctrl, NVME_CTRL_RECONNECTING)) {
if (!nvme_change_ctrl_state(&ctrl->ctrl, NVME_CTRL_CONNECTING)) {
/* state change failure should never happen */
WARN_ON_ONCE(1);
return;
@ -1756,7 +1756,7 @@ static void nvme_rdma_reset_ctrl_work(struct work_struct *work)
nvme_stop_ctrl(&ctrl->ctrl);
nvme_rdma_shutdown_ctrl(ctrl, false);
if (!nvme_change_ctrl_state(&ctrl->ctrl, NVME_CTRL_RECONNECTING)) {
if (!nvme_change_ctrl_state(&ctrl->ctrl, NVME_CTRL_CONNECTING)) {
/* state change failure should never happen */
WARN_ON_ONCE(1);
return;
@ -1784,11 +1784,8 @@ static void nvme_rdma_reset_ctrl_work(struct work_struct *work)
return;
out_fail:
dev_warn(ctrl->ctrl.device, "Removing after reset failure\n");
nvme_remove_namespaces(&ctrl->ctrl);
nvme_rdma_shutdown_ctrl(ctrl, true);
nvme_uninit_ctrl(&ctrl->ctrl);
nvme_put_ctrl(&ctrl->ctrl);
++ctrl->ctrl.nr_reconnects;
nvme_rdma_reconnect_or_remove(ctrl);
}
static const struct nvme_ctrl_ops nvme_rdma_ctrl_ops = {
@ -1942,6 +1939,9 @@ static struct nvme_ctrl *nvme_rdma_create_ctrl(struct device *dev,
if (!ctrl->queues)
goto out_uninit_ctrl;
changed = nvme_change_ctrl_state(&ctrl->ctrl, NVME_CTRL_CONNECTING);
WARN_ON_ONCE(!changed);
ret = nvme_rdma_configure_admin_queue(ctrl, true);
if (ret)
goto out_kfree_queues;

7
drivers/nvme/target/io-cmd.c
View File

@ -105,10 +105,13 @@ static void nvmet_execute_flush(struct nvmet_req *req)
static u16 nvmet_discard_range(struct nvmet_ns *ns,
struct nvme_dsm_range *range, struct bio **bio)
{
if (__blkdev_issue_discard(ns->bdev,
int ret;
ret = __blkdev_issue_discard(ns->bdev,
le64_to_cpu(range->slba) << (ns->blksize_shift - 9),
le32_to_cpu(range->nlb) << (ns->blksize_shift - 9),
GFP_KERNEL, 0, bio))
GFP_KERNEL, 0, bio);
if (ret && ret != -EOPNOTSUPP)
return NVME_SC_INTERNAL | NVME_SC_DNR;
return 0;
}

4
drivers/of/property.c
View File

@ -977,11 +977,11 @@ static int of_fwnode_graph_parse_endpoint(const struct fwnode_handle *fwnode,
return 0;
}
static void *
static const void *
of_fwnode_device_get_match_data(const struct fwnode_handle *fwnode,
const struct device *dev)
{
return (void *)of_device_get_match_data(dev);
return of_device_get_match_data(dev);
}
const struct fwnode_operations of_fwnode_ops = {

2
drivers/opp/cpu.c
View File

@ -55,7 +55,7 @@ int dev_pm_opp_init_cpufreq_table(struct device *dev,
if (max_opps <= 0)
return max_opps ? max_opps : -ENODATA;
freq_table = kcalloc((max_opps + 1), sizeof(*freq_table), GFP_ATOMIC);
freq_table = kcalloc((max_opps + 1), sizeof(*freq_table), GFP_KERNEL);
if (!freq_table)
return -ENOMEM;

20
drivers/platform/x86/dell-laptop.c
View File

@ -126,24 +126,6 @@ static const struct dmi_system_id dell_device_table[] __initconst = {
DMI_MATCH(DMI_CHASSIS_TYPE, "32"), /*Detachable*/
},
},
{
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
DMI_MATCH(DMI_CHASSIS_TYPE, "30"), /*Tablet*/
},
},
{
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
DMI_MATCH(DMI_CHASSIS_TYPE, "31"), /*Convertible*/
},
},
{
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
DMI_MATCH(DMI_CHASSIS_TYPE, "32"), /*Detachable*/
},
},
{
.ident = "Dell Computer Corporation",
.matches = {
@ -1279,7 +1261,7 @@ static int kbd_get_state(struct kbd_state *state)
struct calling_interface_buffer buffer;
int ret;
dell_fill_request(&buffer, 0, 0, 0, 0);
dell_fill_request(&buffer, 0x1, 0, 0, 0);
ret = dell_send_request(&buffer,
CLASS_KBD_BACKLIGHT, SELECT_KBD_BACKLIGHT);
if (ret)

2
drivers/platform/x86/ideapad-laptop.c
View File

@ -113,7 +113,7 @@ MODULE_PARM_DESC(no_bt_rfkill, "No rfkill for bluetooth.");
/*
* ACPI Helpers
*/
#define IDEAPAD_EC_TIMEOUT (100) /* in ms */
#define IDEAPAD_EC_TIMEOUT (200) /* in ms */
static int read_method_int(acpi_handle handle, const char *method, int *val)
{

2
drivers/platform/x86/wmi.c
View File

@ -933,7 +933,7 @@ static int wmi_dev_probe(struct device *dev)
goto probe_failure;
}
buf = kmalloc(strlen(wdriver->driver.name) + 4, GFP_KERNEL);
buf = kmalloc(strlen(wdriver->driver.name) + 5, GFP_KERNEL);
if (!buf) {
ret = -ENOMEM;
goto probe_string_failure;

29
drivers/s390/virtio/virtio_ccw.c
View File

@ -1297,6 +1297,9 @@ static int virtio_ccw_cio_notify(struct ccw_device *cdev, int event)
vcdev->device_lost = true;
rc = NOTIFY_DONE;
break;
case CIO_OPER:
rc = NOTIFY_OK;
break;
default:
rc = NOTIFY_DONE;
break;
@ -1309,6 +1312,27 @@ static struct ccw_device_id virtio_ids[] = {
{},
};
#ifdef CONFIG_PM_SLEEP
static int virtio_ccw_freeze(struct ccw_device *cdev)
{
struct virtio_ccw_device *vcdev = dev_get_drvdata(&cdev->dev);
return virtio_device_freeze(&vcdev->vdev);
}
static int virtio_ccw_restore(struct ccw_device *cdev)
{
struct virtio_ccw_device *vcdev = dev_get_drvdata(&cdev->dev);
int ret;
ret = virtio_ccw_set_transport_rev(vcdev);
if (ret)
return ret;
return virtio_device_restore(&vcdev->vdev);
}
#endif
static struct ccw_driver virtio_ccw_driver = {
.driver = {
.owner = THIS_MODULE,
@ -1321,6 +1345,11 @@ static struct ccw_driver virtio_ccw_driver = {
.set_online = virtio_ccw_online,
.notify = virtio_ccw_cio_notify,
.int_class = IRQIO_VIR,
#ifdef CONFIG_PM_SLEEP
.freeze = virtio_ccw_freeze,
.thaw = virtio_ccw_restore,
.restore = virtio_ccw_restore,
#endif
};
static int __init pure_hex(char **cp, unsigned int *val, int min_digit,

2
drivers/staging/fsl-mc/bus/irq-gic-v3-its-fsl-mc-msi.c
View File

@ -73,6 +73,8 @@ static int __init its_fsl_mc_msi_init(void)
for (np = of_find_matching_node(NULL, its_device_id); np;
np = of_find_matching_node(np, its_device_id)) {
if (!of_device_is_available(np))
continue;
if (!of_property_read_bool(np, "msi-controller"))
continue;

6
drivers/usb/Kconfig
View File

@ -19,6 +19,12 @@ config USB_EHCI_BIG_ENDIAN_MMIO
config USB_EHCI_BIG_ENDIAN_DESC
bool
config USB_UHCI_BIG_ENDIAN_MMIO
bool
config USB_UHCI_BIG_ENDIAN_DESC
bool
menuconfig USB_SUPPORT
bool "USB support"
depends on HAS_IOMEM

8
drivers/usb/host/Kconfig
View File

@ -633,14 +633,6 @@ config USB_UHCI_ASPEED
bool
default y if ARCH_ASPEED
config USB_UHCI_BIG_ENDIAN_MMIO
bool
default y if SPARC_LEON
config USB_UHCI_BIG_ENDIAN_DESC
bool
default y if SPARC_LEON
config USB_FHCI_HCD
tristate "Freescale QE USB Host Controller support"
depends on OF_GPIO && QE_GPIO && QUICC_ENGINE

197
drivers/xen/pvcalls-front.c
View File

@ -60,6 +60,7 @@ struct sock_mapping {
bool active_socket;
struct list_head list;
struct socket *sock;
atomic_t refcount;
union {
struct {
int irq;
@ -93,6 +94,32 @@ struct sock_mapping {
};
};
static inline struct sock_mapping *pvcalls_enter_sock(struct socket *sock)
{
struct sock_mapping *map;
if (!pvcalls_front_dev ||
dev_get_drvdata(&pvcalls_front_dev->dev) == NULL)
return ERR_PTR(-ENOTCONN);
map = (struct sock_mapping *)sock->sk->sk_send_head;
if (map == NULL)
return ERR_PTR(-ENOTSOCK);
pvcalls_enter();
atomic_inc(&map->refcount);
return map;
}
static inline void pvcalls_exit_sock(struct socket *sock)
{
struct sock_mapping *map;
map = (struct sock_mapping *)sock->sk->sk_send_head;
atomic_dec(&map->refcount);
pvcalls_exit();
}
static inline int get_request(struct pvcalls_bedata *bedata, int *req_id)
{
*req_id = bedata->ring.req_prod_pvt & (RING_SIZE(&bedata->ring) - 1);
@ -369,31 +396,23 @@ int pvcalls_front_connect(struct socket *sock, struct sockaddr *addr,
if (addr->sa_family != AF_INET || sock->type != SOCK_STREAM)
return -EOPNOTSUPP;
pvcalls_enter();
if (!pvcalls_front_dev) {
pvcalls_exit();
return -ENOTCONN;
}
map = pvcalls_enter_sock(sock);
if (IS_ERR(map))
return PTR_ERR(map);
bedata = dev_get_drvdata(&pvcalls_front_dev->dev);
map = (struct sock_mapping *)sock->sk->sk_send_head;
if (!map) {
pvcalls_exit();
return -ENOTSOCK;
}
spin_lock(&bedata->socket_lock);
ret = get_request(bedata, &req_id);
if (ret < 0) {
spin_unlock(&bedata->socket_lock);
pvcalls_exit();
pvcalls_exit_sock(sock);
return ret;
}
ret = create_active(map, &evtchn);
if (ret < 0) {
spin_unlock(&bedata->socket_lock);
pvcalls_exit();
pvcalls_exit_sock(sock);
return ret;
}
@ -423,7 +442,7 @@ int pvcalls_front_connect(struct socket *sock, struct sockaddr *addr,
smp_rmb();
ret = bedata->rsp[req_id].ret;
bedata->rsp[req_id].req_id = PVCALLS_INVALID_ID;
pvcalls_exit();
pvcalls_exit_sock(sock);
return ret;
}
@ -488,23 +507,15 @@ int pvcalls_front_sendmsg(struct socket *sock, struct msghdr *msg,
if (flags & (MSG_CONFIRM|MSG_DONTROUTE|MSG_EOR|MSG_OOB))
return -EOPNOTSUPP;
pvcalls_enter();
if (!pvcalls_front_dev) {
pvcalls_exit();
return -ENOTCONN;
}
map = pvcalls_enter_sock(sock);
if (IS_ERR(map))
return PTR_ERR(map);
bedata = dev_get_drvdata(&pvcalls_front_dev->dev);
map = (struct sock_mapping *) sock->sk->sk_send_head;
if (!map) {
pvcalls_exit();
return -ENOTSOCK;
}
mutex_lock(&map->active.out_mutex);
if ((flags & MSG_DONTWAIT) && !pvcalls_front_write_todo(map)) {
mutex_unlock(&map->active.out_mutex);
pvcalls_exit();
pvcalls_exit_sock(sock);
return -EAGAIN;
}
if (len > INT_MAX)
@ -526,7 +537,7 @@ int pvcalls_front_sendmsg(struct socket *sock, struct msghdr *msg,
tot_sent = sent;
mutex_unlock(&map->active.out_mutex);
pvcalls_exit();
pvcalls_exit_sock(sock);
return tot_sent;
}
@ -591,19 +602,11 @@ int pvcalls_front_recvmsg(struct socket *sock, struct msghdr *msg, size_t len,
if (flags & (MSG_CMSG_CLOEXEC|MSG_ERRQUEUE|MSG_OOB|MSG_TRUNC))
return -EOPNOTSUPP;
pvcalls_enter();
if (!pvcalls_front_dev) {
pvcalls_exit();
return -ENOTCONN;
}
map = pvcalls_enter_sock(sock);
if (IS_ERR(map))
return PTR_ERR(map);
bedata = dev_get_drvdata(&pvcalls_front_dev->dev);
map = (struct sock_mapping *) sock->sk->sk_send_head;
if (!map) {
pvcalls_exit();
return -ENOTSOCK;
}
mutex_lock(&map->active.in_mutex);
if (len > XEN_FLEX_RING_SIZE(PVCALLS_RING_ORDER))
len = XEN_FLEX_RING_SIZE(PVCALLS_RING_ORDER);
@ -623,7 +626,7 @@ int pvcalls_front_recvmsg(struct socket *sock, struct msghdr *msg, size_t len,
ret = 0;
mutex_unlock(&map->active.in_mutex);
pvcalls_exit();
pvcalls_exit_sock(sock);
return ret;
}
@ -637,24 +640,16 @@ int pvcalls_front_bind(struct socket *sock, struct sockaddr *addr, int addr_len)
if (addr->sa_family != AF_INET || sock->type != SOCK_STREAM)
return -EOPNOTSUPP;
pvcalls_enter();
if (!pvcalls_front_dev) {
pvcalls_exit();
return -ENOTCONN;
}
map = pvcalls_enter_sock(sock);
if (IS_ERR(map))
return PTR_ERR(map);
bedata = dev_get_drvdata(&pvcalls_front_dev->dev);
map = (struct sock_mapping *) sock->sk->sk_send_head;
if (map == NULL) {
pvcalls_exit();
return -ENOTSOCK;
}
spin_lock(&bedata->socket_lock);
ret = get_request(bedata, &req_id);
if (ret < 0) {
spin_unlock(&bedata->socket_lock);
pvcalls_exit();
pvcalls_exit_sock(sock);
return ret;
}
req = RING_GET_REQUEST(&bedata->ring, req_id);
@ -684,7 +679,7 @@ int pvcalls_front_bind(struct socket *sock, struct sockaddr *addr, int addr_len)
bedata->rsp[req_id].req_id = PVCALLS_INVALID_ID;
map->passive.status = PVCALLS_STATUS_BIND;
pvcalls_exit();
pvcalls_exit_sock(sock);
return 0;
}
@ -695,21 +690,13 @@ int pvcalls_front_listen(struct socket *sock, int backlog)
struct xen_pvcalls_request *req;
int notify, req_id, ret;
pvcalls_enter();
if (!pvcalls_front_dev) {
pvcalls_exit();
return -ENOTCONN;
}
map = pvcalls_enter_sock(sock);
if (IS_ERR(map))
return PTR_ERR(map);
bedata = dev_get_drvdata(&pvcalls_front_dev->dev);
map = (struct sock_mapping *) sock->sk->sk_send_head;
if (!map) {
pvcalls_exit();
return -ENOTSOCK;
}
if (map->passive.status != PVCALLS_STATUS_BIND) {
pvcalls_exit();
pvcalls_exit_sock(sock);
return -EOPNOTSUPP;
}
@ -717,7 +704,7 @@ int pvcalls_front_listen(struct socket *sock, int backlog)
ret = get_request(bedata, &req_id);
if (ret < 0) {
spin_unlock(&bedata->socket_lock);
pvcalls_exit();
pvcalls_exit_sock(sock);
return ret;
}
req = RING_GET_REQUEST(&bedata->ring, req_id);
@ -741,7 +728,7 @@ int pvcalls_front_listen(struct socket *sock, int backlog)
bedata->rsp[req_id].req_id = PVCALLS_INVALID_ID;
map->passive.status = PVCALLS_STATUS_LISTEN;
pvcalls_exit();
pvcalls_exit_sock(sock);
return ret;
}
@ -753,21 +740,13 @@ int pvcalls_front_accept(struct socket *sock, struct socket *newsock, int flags)
struct xen_pvcalls_request *req;
int notify, req_id, ret, evtchn, nonblock;
pvcalls_enter();
if (!pvcalls_front_dev) {
pvcalls_exit();
return -ENOTCONN;
}
map = pvcalls_enter_sock(sock);
if (IS_ERR(map))
return PTR_ERR(map);
bedata = dev_get_drvdata(&pvcalls_front_dev->dev);
map = (struct sock_mapping *) sock->sk->sk_send_head;
if (!map) {
pvcalls_exit();
return -ENOTSOCK;
}
if (map->passive.status != PVCALLS_STATUS_LISTEN) {
pvcalls_exit();
pvcalls_exit_sock(sock);
return -EINVAL;
}
@ -785,13 +764,13 @@ int pvcalls_front_accept(struct socket *sock, struct socket *newsock, int flags)
goto received;
}
if (nonblock) {
pvcalls_exit();
pvcalls_exit_sock(sock);
return -EAGAIN;
}
if (wait_event_interruptible(map->passive.inflight_accept_req,
!test_and_set_bit(PVCALLS_FLAG_ACCEPT_INFLIGHT,
(void *)&map->passive.flags))) {
pvcalls_exit();
pvcalls_exit_sock(sock);
return -EINTR;
}
}
@ -802,7 +781,7 @@ int pvcalls_front_accept(struct socket *sock, struct socket *newsock, int flags)
clear_bit(PVCALLS_FLAG_ACCEPT_INFLIGHT,
(void *)&map->passive.flags);
spin_unlock(&bedata->socket_lock);
pvcalls_exit();
pvcalls_exit_sock(sock);
return ret;
}
map2 = kzalloc(sizeof(*map2), GFP_ATOMIC);
@ -810,7 +789,7 @@ int pvcalls_front_accept(struct socket *sock, struct socket *newsock, int flags)
clear_bit(PVCALLS_FLAG_ACCEPT_INFLIGHT,
(void *)&map->passive.flags);
spin_unlock(&bedata->socket_lock);
pvcalls_exit();
pvcalls_exit_sock(sock);
return -ENOMEM;
}
ret = create_active(map2, &evtchn);
@ -819,7 +798,7 @@ int pvcalls_front_accept(struct socket *sock, struct socket *newsock, int flags)
clear_bit(PVCALLS_FLAG_ACCEPT_INFLIGHT,
(void *)&map->passive.flags);
spin_unlock(&bedata->socket_lock);
pvcalls_exit();
pvcalls_exit_sock(sock);
return ret;
}
list_add_tail(&map2->list, &bedata->socket_mappings);
@ -841,13 +820,13 @@ int pvcalls_front_accept(struct socket *sock, struct socket *newsock, int flags)
/* We could check if we have received a response before returning. */
if (nonblock) {
WRITE_ONCE(map->passive.inflight_req_id, req_id);
pvcalls_exit();
pvcalls_exit_sock(sock);
return -EAGAIN;
}
if (wait_event_interruptible(bedata->inflight_req,
READ_ONCE(bedata->rsp[req_id].req_id) == req_id)) {
pvcalls_exit();
pvcalls_exit_sock(sock);
return -EINTR;
}
/* read req_id, then the content */
@ -862,7 +841,7 @@ int pvcalls_front_accept(struct socket *sock, struct socket *newsock, int flags)
clear_bit(PVCALLS_FLAG_ACCEPT_INFLIGHT,
(void *)&map->passive.flags);
pvcalls_front_free_map(bedata, map2);
pvcalls_exit();
pvcalls_exit_sock(sock);
return -ENOMEM;
}
newsock->sk->sk_send_head = (void *)map2;
@ -874,7 +853,7 @@ int pvcalls_front_accept(struct socket *sock, struct socket *newsock, int flags)
clear_bit(PVCALLS_FLAG_ACCEPT_INFLIGHT, (void *)&map->passive.flags);
wake_up(&map->passive.inflight_accept_req);
pvcalls_exit();
pvcalls_exit_sock(sock);
return ret;
}
@ -965,23 +944,16 @@ __poll_t pvcalls_front_poll(struct file *file, struct socket *sock,
struct sock_mapping *map;
__poll_t ret;
pvcalls_enter();
if (!pvcalls_front_dev) {
pvcalls_exit();
map = pvcalls_enter_sock(sock);
if (IS_ERR(map))
return EPOLLNVAL;
}
bedata = dev_get_drvdata(&pvcalls_front_dev->dev);
map = (struct sock_mapping *) sock->sk->sk_send_head;
if (!map) {
pvcalls_exit();
return EPOLLNVAL;
}
if (map->active_socket)
ret = pvcalls_front_poll_active(file, bedata, map, wait);
else
ret = pvcalls_front_poll_passive(file, bedata, map, wait);
pvcalls_exit();
pvcalls_exit_sock(sock);
return ret;
}
@ -995,25 +967,20 @@ int pvcalls_front_release(struct socket *sock)
if (sock->sk == NULL)
return 0;
pvcalls_enter();
if (!pvcalls_front_dev) {
pvcalls_exit();
return -EIO;
map = pvcalls_enter_sock(sock);
if (IS_ERR(map)) {
if (PTR_ERR(map) == -ENOTCONN)
return -EIO;
else
return 0;
}
bedata = dev_get_drvdata(&pvcalls_front_dev->dev);
map = (struct sock_mapping *) sock->sk->sk_send_head;
if (map == NULL) {
pvcalls_exit();
return 0;
}
spin_lock(&bedata->socket_lock);
ret = get_request(bedata, &req_id);
if (ret < 0) {
spin_unlock(&bedata->socket_lock);
pvcalls_exit();
pvcalls_exit_sock(sock);
return ret;
}
sock->sk->sk_send_head = NULL;
@ -1043,14 +1010,20 @@ int pvcalls_front_release(struct socket *sock)
/*
* We need to make sure that sendmsg/recvmsg on this socket have
* not started before we've cleared sk_send_head here. The
* easiest (though not optimal) way to guarantee this is to see
* that no pvcall (other than us) is in progress.
* easiest way to guarantee this is to see that no pvcalls
* (other than us) is in progress on this socket.
*/
while (atomic_read(&pvcalls_refcount) > 1)
while (atomic_read(&map->refcount) > 1)
cpu_relax();
pvcalls_front_free_map(bedata, map);
} else {
wake_up(&bedata->inflight_req);
wake_up(&map->passive.inflight_accept_req);
while (atomic_read(&map->refcount) > 1)
cpu_relax();
spin_lock(&bedata->socket_lock);
list_del(&map->list);
spin_unlock(&bedata->socket_lock);

1
drivers/xen/xenbus/xenbus.h
View File

@ -76,6 +76,7 @@ struct xb_req_data {
struct list_head list;
wait_queue_head_t wq;
struct xsd_sockmsg msg;
uint32_t caller_req_id;
enum xsd_sockmsg_type type;
char *body;
const struct kvec *vec;

1
drivers/xen/xenbus/xenbus_comms.c
View File

@ -309,6 +309,7 @@ static int process_msg(void)
goto out;
if (req->state == xb_req_state_wait_reply) {
req->msg.req_id = req->caller_req_id;
req->msg.type = state.msg.type;
req->msg.len = state.msg.len;
req->body = state.body;

3
drivers/xen/xenbus/xenbus_xs.c
View File

@ -227,6 +227,8 @@ static void xs_send(struct xb_req_data *req, struct xsd_sockmsg *msg)
req->state = xb_req_state_queued;
init_waitqueue_head(&req->wq);
/* Save the caller req_id and restore it later in the reply */
req->caller_req_id = req->msg.req_id;
req->msg.req_id = xs_request_enter(req);
mutex_lock(&xb_write_mutex);
@ -310,6 +312,7 @@ static void *xs_talkv(struct xenbus_transaction t,
req->num_vecs = num_vecs;
req->cb = xs_wake_up;
msg.req_id = 0;
msg.tx_id = t.id;
msg.type = type;
msg.len = 0;

11
fs/btrfs/backref.c
View File

@ -1264,7 +1264,16 @@ static int find_parent_nodes(struct btrfs_trans_handle *trans,
while (node) {
ref = rb_entry(node, struct prelim_ref, rbnode);
node = rb_next(&ref->rbnode);
WARN_ON(ref->count < 0);
/*
* ref->count < 0 can happen here if there are delayed
* refs with a node->action of BTRFS_DROP_DELAYED_REF.
* prelim_ref_insert() relies on this when merging
* identical refs to keep the overall count correct.
* prelim_ref_insert() will merge only those refs
* which compare identically. Any refs having
* e.g. different offsets would not be merged,
* and would retain their original ref->count < 0.
*/
if (roots && ref->count && ref->root_id && ref->parent == 0) {
if (sc && sc->root_objectid &&
ref->root_id != sc->root_objectid) {

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