mirror of https://gitee.com/openkylin/linux.git
5958 Commits
| Author | SHA1 | Message | Date |
|---|---|---|---|
Xiao Guangrong
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13d268ca2c |
KVM: MMU: apply page track notifier
Register the notifier to receive write track event so that we can update our shadow page table It makes kvm_mmu_pte_write() be the callback of the notifier, no function is changed Signed-off-by: Xiao Guangrong <guangrong.xiao@linux.intel.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> |
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Xiao Guangrong
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0eb05bf290 |
KVM: page track: add notifier support
Notifier list is introduced so that any node wants to receive the track event can register to the list Two APIs are introduced here: - kvm_page_track_register_notifier(): register the notifier to receive track event - kvm_page_track_unregister_notifier(): stop receiving track event by unregister the notifier The callback, node->track_write() is called when a write access on the write tracked page happens Signed-off-by: Xiao Guangrong <guangrong.xiao@linux.intel.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> |
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Xiao Guangrong
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e5691a81e8 |
KVM: MMU: clear write-flooding on the fast path of tracked page
If the page fault is caused by write access on write tracked page, the real shadow page walking is skipped, we lost the chance to clear write flooding for the page structure current vcpu is using Fix it by locklessly waking shadow page table to clear write flooding on the shadow page structure out of mmu-lock. So that we change the count to atomic_t Signed-off-by: Xiao Guangrong <guangrong.xiao@linux.intel.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> |
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Xiao Guangrong
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3d0c27ad6e |
KVM: MMU: let page fault handler be aware tracked page
The page fault caused by write access on the write tracked page can not be fixed, it always need to be emulated. page_fault_handle_page_track() is the fast path we introduce here to skip holding mmu-lock and shadow page table walking However, if the page table is not present, it is worth making the page table entry present and readonly to make the read access happy mmu_need_write_protect() need to be cooked to avoid page becoming writable when making page table present or sync/prefetch shadow page table entries Signed-off-by: Xiao Guangrong <guangrong.xiao@linux.intel.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> |
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Xiao Guangrong
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f29d4d7810 |
KVM: page track: introduce kvm_slot_page_track_{add,remove}_page
These two functions are the user APIs: - kvm_slot_page_track_add_page(): add the page to the tracking pool after that later specified access on that page will be tracked - kvm_slot_page_track_remove_page(): remove the page from the tracking pool, the specified access on the page is not tracked after the last user is gone Both of these are called under the protection both of mmu-lock and kvm->srcu or kvm->slots_lock Signed-off-by: Xiao Guangrong <guangrong.xiao@linux.intel.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> |
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Xiao Guangrong
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21ebbedadd |
KVM: page track: add the framework of guest page tracking
The array, gfn_track[mode][gfn], is introduced in memory slot for every guest page, this is the tracking count for the gust page on different modes. If the page is tracked then the count is increased, the page is not tracked after the count reaches zero We use 'unsigned short' as the tracking count which should be enough as shadow page table only can use 2^14 (2^3 for level, 2^1 for cr4_pae, 2^2 for quadrant, 2^3 for access, 2^1 for nxe, 2^1 for cr0_wp, 2^1 for smep_andnot_wp, 2^1 for smap_andnot_wp, and 2^1 for smm) at most, there is enough room for other trackers Two callbacks, kvm_page_track_create_memslot() and kvm_page_track_free_memslot() are implemented in this patch, they are internally used to initialize and reclaim the memory of the array Currently, only write track mode is supported Signed-off-by: Xiao Guangrong <guangrong.xiao@linux.intel.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> |
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Xiao Guangrong
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92f94f1e9e |
KVM: MMU: rename has_wrprotected_page to mmu_gfn_lpage_is_disallowed
kvm_lpage_info->write_count is used to detect if the large page mapping for the gfn on the specified level is allowed, rename it to disallow_lpage to reflect its purpose, also we rename has_wrprotected_page() to mmu_gfn_lpage_is_disallowed() to make the code more clearer Later we will extend this mechanism for page tracking: if the gfn is tracked then large mapping for that gfn on any level is not allowed. The new name is more straightforward Reviewed-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Xiao Guangrong <guangrong.xiao@linux.intel.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> |
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Andrey Smetanin
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18f098618a |
drivers/hv: Move VMBus hypercall codes into Hyper-V UAPI header
VMBus hypercall codes inside Hyper-V UAPI header will be used by QEMU to implement VMBus host devices support. Signed-off-by: Andrey Smetanin <asmetanin@virtuozzo.com> Acked-by: K. Y. Srinivasan <kys@microsoft.com> Reviewed-by: Roman Kagan <rkagan@virtuozzo.com> CC: Gleb Natapov <gleb@kernel.org> CC: Paolo Bonzini <pbonzini@redhat.com> CC: Joerg Roedel <joro@8bytes.org> CC: "K. Y. Srinivasan" <kys@microsoft.com> CC: Haiyang Zhang <haiyangz@microsoft.com> CC: Roman Kagan <rkagan@virtuozzo.com> CC: Denis V. Lunev <den@openvz.org> CC: qemu-devel@nongnu.org [Do not rename the constant at the same time as moving it, as that would cause semantic conflicts with the Hyper-V tree. - Paolo] Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> |
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Andrey Smetanin
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8ed6d76781 |
kvm/x86: Rename Hyper-V long spin wait hypercall
Rename HV_X64_HV_NOTIFY_LONG_SPIN_WAIT by HVCALL_NOTIFY_LONG_SPIN_WAIT, so the name is more consistent with the other hypercalls. Signed-off-by: Andrey Smetanin <asmetanin@virtuozzo.com> Reviewed-by: Roman Kagan <rkagan@virtuozzo.com> CC: Gleb Natapov <gleb@kernel.org> CC: Paolo Bonzini <pbonzini@redhat.com> CC: Joerg Roedel <joro@8bytes.org> CC: "K. Y. Srinivasan" <kys@microsoft.com> CC: Haiyang Zhang <haiyangz@microsoft.com> CC: Roman Kagan <rkagan@virtuozzo.com> CC: Denis V. Lunev <den@openvz.org> CC: qemu-devel@nongnu.org [Change name, Andrey used HV_X64_HCALL_NOTIFY_LONG_SPIN_WAIT. - Paolo] Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> |
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Feng Wu
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520040146a |
KVM: x86: Use vector-hashing to deliver lowest-priority interrupts
Use vector-hashing to deliver lowest-priority interrupts, As an example, modern Intel CPUs in server platform use this method to handle lowest-priority interrupts. Signed-off-by: Feng Wu <feng.wu@intel.com> Reviewed-by: Radim Krčmář <rkrcmar@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> |
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Linus Torvalds
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d517be5fcf |
Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 fixes from Thomas Gleixner:
"A bit on the largish side due to a series of fixes for a regression in
the x86 vector management which was introduced in 4.3. This work was
started in December already, but it took some time to fix all corner
cases and a couple of older bugs in that area which were detected
while at it
Aside of that a few platform updates for intel-mid, quark and UV and
two fixes for in the mm code:
- Use proper types for pgprot values to avoid truncation
- Prevent a size truncation in the pageattr code when setting page
attributes for large mappings"
* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (21 commits)
x86/mm/pat: Avoid truncation when converting cpa->numpages to address
x86/mm: Fix types used in pgprot cacheability flags translations
x86/platform/quark: Print boundaries correctly
x86/platform/UV: Remove EFI memmap quirk for UV2+
x86/platform/intel-mid: Join string and fix SoC name
x86/platform/intel-mid: Enable 64-bit build
x86/irq: Plug vector cleanup race
x86/irq: Call irq_force_move_complete with irq descriptor
x86/irq: Remove outgoing CPU from vector cleanup mask
x86/irq: Remove the cpumask allocation from send_cleanup_vector()
x86/irq: Clear move_in_progress before sending cleanup IPI
x86/irq: Remove offline cpus from vector cleanup
x86/irq: Get rid of code duplication
x86/irq: Copy vectormask instead of an AND operation
x86/irq: Check vector allocation early
x86/irq: Reorganize the search in assign_irq_vector
x86/irq: Reorganize the return path in assign_irq_vector
x86/irq: Do not use apic_chip_data.old_domain as temporary buffer
x86/irq: Validate that irq descriptor is still active
x86/irq: Fix a race in x86_vector_free_irqs()
...
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Jan Beulich
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3625c2c234 |
x86/mm: Fix types used in pgprot cacheability flags translations
For PAE kernels "unsigned long" is not suitable to hold page protection
flags, since _PAGE_NX doesn't fit there. This is the reason for quite a
few W+X pages getting reported as insecure during boot (observed namely
for the entire initrd range).
Fixes:
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Ross Zwisler
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3f4a2670de |
pmem: add wb_cache_pmem() to the PMEM API
__arch_wb_cache_pmem() was already an internal implementation detail of the x86 PMEM API, but this functionality needs to be exported as part of the general PMEM API to handle the fsync/msync case for DAX mmaps. One thing worth noting is that we really do want this to be part of the PMEM API as opposed to a stand-alone function like clflush_cache_range() because of ordering restrictions. By having wb_cache_pmem() as part of the PMEM API we can leave it unordered, call it multiple times to write back large amounts of memory, and then order the multiple calls with a single wmb_pmem(). Signed-off-by: Ross Zwisler <ross.zwisler@linux.intel.com> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: "J. Bruce Fields" <bfields@fieldses.org> Cc: "Theodore Ts'o" <tytso@mit.edu> Cc: Alexander Viro <viro@zeniv.linux.org.uk> Cc: Andreas Dilger <adilger.kernel@dilger.ca> Cc: Dave Chinner <david@fromorbit.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Jan Kara <jack@suse.com> Cc: Jeff Layton <jlayton@poochiereds.net> Cc: Matthew Wilcox <willy@linux.intel.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Dan Williams <dan.j.williams@intel.com> Cc: Matthew Wilcox <matthew.r.wilcox@intel.com> Cc: Dave Hansen <dave.hansen@linux.intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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Linus Torvalds
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404a47410c |
Merge branch 'uaccess' (batched user access infrastructure)
Expose an interface to allow users to mark several accesses together as being user space accesses, allowing batching of the surrounding user space access markers (SMAP on x86, PAN on arm64, domain register switching on arm). This is currently only used for the user string lenth and copying functions, where the SMAP overhead on x86 drowned the actual user accesses (only noticeable on newer microarchitectures that support SMAP in the first place, of course). * user access batching branch: Use the new batched user accesses in generic user string handling Add 'unsafe' user access functions for batched accesses x86: reorganize SMAP handling in user space accesses |
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Linus Torvalds
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eae21770b4 |
Merge branch 'akpm' (patches from Andrew)
Merge third patch-bomb from Andrew Morton:
"I'm pretty much done for -rc1 now:
- the rest of MM, basically
- lib/ updates
- checkpatch, epoll, hfs, fatfs, ptrace, coredump, exit
- cpu_mask simplifications
- kexec, rapidio, MAINTAINERS etc, etc.
- more dma-mapping cleanups/simplifications from hch"
* emailed patches from Andrew Morton <akpm@linux-foundation.org>: (109 commits)
MAINTAINERS: add/fix git URLs for various subsystems
mm: memcontrol: add "sock" to cgroup2 memory.stat
mm: memcontrol: basic memory statistics in cgroup2 memory controller
mm: memcontrol: do not uncharge old page in page cache replacement
Documentation: cgroup: add memory.swap.{current,max} description
mm: free swap cache aggressively if memcg swap is full
mm: vmscan: do not scan anon pages if memcg swap limit is hit
swap.h: move memcg related stuff to the end of the file
mm: memcontrol: replace mem_cgroup_lruvec_online with mem_cgroup_online
mm: vmscan: pass memcg to get_scan_count()
mm: memcontrol: charge swap to cgroup2
mm: memcontrol: clean up alloc, online, offline, free functions
mm: memcontrol: flatten struct cg_proto
mm: memcontrol: rein in the CONFIG space madness
net: drop tcp_memcontrol.c
mm: memcontrol: introduce CONFIG_MEMCG_LEGACY_KMEM
mm: memcontrol: allow to disable kmem accounting for cgroup2
mm: memcontrol: account "kmem" consumers in cgroup2 memory controller
mm: memcontrol: move kmem accounting code to CONFIG_MEMCG
mm: memcontrol: separate kmem code from legacy tcp accounting code
...
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Linus Torvalds
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d43421565b |
PCI changes for the v4.5 merge window:
Enumeration
Simplify config space size computation (Bjorn Helgaas)
Avoid iterating through ROM outside the resource window (Edward O'Callaghan)
Support PCIe devices with short cfg_size (Jason S. McMullan)
Add Netronome vendor and device IDs (Jason S. McMullan)
Limit config space size for Netronome NFP6000 family (Jason S. McMullan)
Add Netronome NFP4000 PF device ID (Simon Horman)
Limit config space size for Netronome NFP4000 (Simon Horman)
Print warnings for all invalid expansion ROM headers (Vladis Dronov)
Resource management
Fix minimum allocation address overwrite (Christoph Biedl)
PCI device hotplug
acpiphp_ibm: Fix null dereferences on null ibm_slot (Colin Ian King)
pciehp: Always protect pciehp_disable_slot() with hotplug mutex (Guenter Roeck)
shpchp: Constify hpc_ops structure (Julia Lawall)
ibmphp: Remove unneeded NULL test (Julia Lawall)
Power management
Make ASPM sysfs link_state_store() consistent with link_state_show() (Andy Lutomirski)
Virtualization
Add function 1 DMA alias quirk for Lite-On/Plextor M6e/Marvell 88SS9183 (Tim Sander)
MSI
Remove empty pci_msi_init_pci_dev() (Bjorn Helgaas)
Mark PCIe/PCI (MSI) IRQ cascade handlers as IRQF_NO_THREAD (Grygorii Strashko)
Initialize MSI capability for all architectures (Guilherme G. Piccoli)
Relax msi_domain_alloc() to support parentless MSI irqdomains (Liu Jiang)
ARM Versatile host bridge driver
Remove unused pci_sys_data structures (Lorenzo Pieralisi)
Broadcom iProc host bridge driver
Hide CONFIG_PCIE_IPROC (Arnd Bergmann)
Do not use 0x in front of %pap (Dmitry V. Krivenok)
Update iProc PCIe device tree binding (Ray Jui)
Add PAXC interface support (Ray Jui)
Add iProc PCIe MSI device tree binding (Ray Jui)
Add iProc PCIe MSI support (Ray Jui)
Freescale i.MX6 host bridge driver
Use gpio_set_value_cansleep() (Fabio Estevam)
Add support for active-low reset GPIO (Petr Štetiar)
HiSilicon host bridge driver
Add support for HiSilicon Hip06 PCIe host controllers (Gabriele Paoloni)
Intel VMD host bridge driver
Export irq_domain_set_info() for module use (Keith Busch)
x86/PCI: Allow DMA ops specific to a PCI domain (Keith Busch)
Use 32 bit PCI domain numbers (Keith Busch)
Add driver for Intel Volume Management Device (VMD) (Keith Busch)
Qualcomm host bridge driver
Document PCIe devicetree bindings (Stanimir Varbanov)
Add Qualcomm PCIe controller driver (Stanimir Varbanov)
dts: apq8064: add PCIe devicetree node (Stanimir Varbanov)
dts: ifc6410: enable PCIe DT node for this board (Stanimir Varbanov)
Renesas R-Car host bridge driver
Add support for R-Car H3 to pcie-rcar (Harunobu Kurokawa)
Allow DT to override default window settings (Phil Edworthy)
Convert to DT resource parsing API (Phil Edworthy)
Revert "PCI: rcar: Build pcie-rcar.c only on ARM" (Phil Edworthy)
Remove unused pci_sys_data struct from pcie-rcar (Phil Edworthy)
Add runtime PM support to pcie-rcar (Phil Edworthy)
Add Gen2 PHY setup to pcie-rcar (Phil Edworthy)
Add gen2 fallback compatibility string for pci-rcar-gen2 (Simon Horman)
Add gen2 fallback compatibility string for pcie-rcar (Simon Horman)
Synopsys DesignWare host bridge driver
Simplify control flow (Bjorn Helgaas)
Make config accessor override checking symmetric (Bjorn Helgaas)
Ensure ATU is enabled before IO/conf space accesses (Stanimir Varbanov)
Miscellaneous
Add of_pci_get_host_bridge_resources() stub (Arnd Bergmann)
Check for PCI_HEADER_TYPE_BRIDGE equality, not bitmask (Bjorn Helgaas)
Fix all whitespace issues (Bogicevic Sasa)
x86/PCI: Simplify pci_bios_{read,write} (Geliang Tang)
Use to_pci_dev() instead of open-coding it (Geliang Tang)
Use kobj_to_dev() instead of open-coding it (Geliang Tang)
Use list_for_each_entry() to simplify code (Geliang Tang)
Fix typos in <linux/msi.h> (Thomas Petazzoni)
x86/PCI: Clarify AMD Fam10h config access restrictions comment (Tomasz Nowicki)
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Merge tag 'pci-v4.5-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci
Pull PCI updates from Bjorn Helgaas:
"PCI changes for the v4.5 merge window:
Enumeration:
- Simplify config space size computation (Bjorn Helgaas)
- Avoid iterating through ROM outside the resource window (Edward O'Callaghan)
- Support PCIe devices with short cfg_size (Jason S. McMullan)
- Add Netronome vendor and device IDs (Jason S. McMullan)
- Limit config space size for Netronome NFP6000 family (Jason S. McMullan)
- Add Netronome NFP4000 PF device ID (Simon Horman)
- Limit config space size for Netronome NFP4000 (Simon Horman)
- Print warnings for all invalid expansion ROM headers (Vladis Dronov)
Resource management:
- Fix minimum allocation address overwrite (Christoph Biedl)
PCI device hotplug:
- acpiphp_ibm: Fix null dereferences on null ibm_slot (Colin Ian King)
- pciehp: Always protect pciehp_disable_slot() with hotplug mutex (Guenter Roeck)
- shpchp: Constify hpc_ops structure (Julia Lawall)
- ibmphp: Remove unneeded NULL test (Julia Lawall)
Power management:
- Make ASPM sysfs link_state_store() consistent with link_state_show() (Andy Lutomirski)
Virtualization
- Add function 1 DMA alias quirk for Lite-On/Plextor M6e/Marvell 88SS9183 (Tim Sander)
MSI:
- Remove empty pci_msi_init_pci_dev() (Bjorn Helgaas)
- Mark PCIe/PCI (MSI) IRQ cascade handlers as IRQF_NO_THREAD (Grygorii Strashko)
- Initialize MSI capability for all architectures (Guilherme G. Piccoli)
- Relax msi_domain_alloc() to support parentless MSI irqdomains (Liu Jiang)
ARM Versatile host bridge driver:
- Remove unused pci_sys_data structures (Lorenzo Pieralisi)
Broadcom iProc host bridge driver:
- Hide CONFIG_PCIE_IPROC (Arnd Bergmann)
- Do not use 0x in front of %pap (Dmitry V. Krivenok)
- Update iProc PCIe device tree binding (Ray Jui)
- Add PAXC interface support (Ray Jui)
- Add iProc PCIe MSI device tree binding (Ray Jui)
- Add iProc PCIe MSI support (Ray Jui)
Freescale i.MX6 host bridge driver:
- Use gpio_set_value_cansleep() (Fabio Estevam)
- Add support for active-low reset GPIO (Petr Štetiar)
HiSilicon host bridge driver:
- Add support for HiSilicon Hip06 PCIe host controllers (Gabriele Paoloni)
Intel VMD host bridge driver:
- Export irq_domain_set_info() for module use (Keith Busch)
- x86/PCI: Allow DMA ops specific to a PCI domain (Keith Busch)
- Use 32 bit PCI domain numbers (Keith Busch)
- Add driver for Intel Volume Management Device (VMD) (Keith Busch)
Qualcomm host bridge driver:
- Document PCIe devicetree bindings (Stanimir Varbanov)
- Add Qualcomm PCIe controller driver (Stanimir Varbanov)
- dts: apq8064: add PCIe devicetree node (Stanimir Varbanov)
- dts: ifc6410: enable PCIe DT node for this board (Stanimir Varbanov)
Renesas R-Car host bridge driver:
- Add support for R-Car H3 to pcie-rcar (Harunobu Kurokawa)
- Allow DT to override default window settings (Phil Edworthy)
- Convert to DT resource parsing API (Phil Edworthy)
- Revert "PCI: rcar: Build pcie-rcar.c only on ARM" (Phil Edworthy)
- Remove unused pci_sys_data struct from pcie-rcar (Phil Edworthy)
- Add runtime PM support to pcie-rcar (Phil Edworthy)
- Add Gen2 PHY setup to pcie-rcar (Phil Edworthy)
- Add gen2 fallback compatibility string for pci-rcar-gen2 (Simon Horman)
- Add gen2 fallback compatibility string for pcie-rcar (Simon Horman)
Synopsys DesignWare host bridge driver:
- Simplify control flow (Bjorn Helgaas)
- Make config accessor override checking symmetric (Bjorn Helgaas)
- Ensure ATU is enabled before IO/conf space accesses (Stanimir Varbanov)
Miscellaneous:
- Add of_pci_get_host_bridge_resources() stub (Arnd Bergmann)
- Check for PCI_HEADER_TYPE_BRIDGE equality, not bitmask (Bjorn Helgaas)
- Fix all whitespace issues (Bogicevic Sasa)
- x86/PCI: Simplify pci_bios_{read,write} (Geliang Tang)
- Use to_pci_dev() instead of open-coding it (Geliang Tang)
- Use kobj_to_dev() instead of open-coding it (Geliang Tang)
- Use list_for_each_entry() to simplify code (Geliang Tang)
- Fix typos in <linux/msi.h> (Thomas Petazzoni)
- x86/PCI: Clarify AMD Fam10h config access restrictions comment (Tomasz Nowicki)"
* tag 'pci-v4.5-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: (58 commits)
PCI: Add function 1 DMA alias quirk for Lite-On/Plextor M6e/Marvell 88SS9183
PCI: Limit config space size for Netronome NFP4000
PCI: Add Netronome NFP4000 PF device ID
x86/PCI: Add driver for Intel Volume Management Device (VMD)
PCI/AER: Use 32 bit PCI domain numbers
x86/PCI: Allow DMA ops specific to a PCI domain
irqdomain: Export irq_domain_set_info() for module use
PCI: host: Add of_pci_get_host_bridge_resources() stub
genirq/MSI: Relax msi_domain_alloc() to support parentless MSI irqdomains
PCI: rcar: Add Gen2 PHY setup to pcie-rcar
PCI: rcar: Add runtime PM support to pcie-rcar
PCI: designware: Make config accessor override checking symmetric
PCI: ibmphp: Remove unneeded NULL test
ARM: dts: ifc6410: enable PCIe DT node for this board
ARM: dts: apq8064: add PCIe devicetree node
PCI: hotplug: Use list_for_each_entry() to simplify code
PCI: rcar: Remove unused pci_sys_data struct from pcie-rcar
PCI: hisi: Add support for HiSilicon Hip06 PCIe host controllers
PCI: Avoid iterating through memory outside the resource window
PCI: acpiphp_ibm: Fix null dereferences on null ibm_slot
...
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Christoph Hellwig
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e1c7e32453 |
dma-mapping: always provide the dma_map_ops based implementation
Move the generic implementation to <linux/dma-mapping.h> now that all architectures support it and remove the HAVE_DMA_ATTR Kconfig symbol now that everyone supports them. [valentinrothberg@gmail.com: remove leftovers in Kconfig] Signed-off-by: Christoph Hellwig <hch@lst.de> Cc: "David S. Miller" <davem@davemloft.net> Cc: Aurelien Jacquiot <a-jacquiot@ti.com> Cc: Chris Metcalf <cmetcalf@ezchip.com> Cc: David Howells <dhowells@redhat.com> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Haavard Skinnemoen <hskinnemoen@gmail.com> Cc: Hans-Christian Egtvedt <egtvedt@samfundet.no> Cc: Helge Deller <deller@gmx.de> Cc: James Hogan <james.hogan@imgtec.com> Cc: Jesper Nilsson <jesper.nilsson@axis.com> Cc: Koichi Yasutake <yasutake.koichi@jp.panasonic.com> Cc: Ley Foon Tan <lftan@altera.com> Cc: Mark Salter <msalter@redhat.com> Cc: Mikael Starvik <starvik@axis.com> Cc: Steven Miao <realmz6@gmail.com> Cc: Vineet Gupta <vgupta@synopsys.com> Cc: Christian Borntraeger <borntraeger@de.ibm.com> Cc: Joerg Roedel <jroedel@suse.de> Cc: Sebastian Ott <sebott@linux.vnet.ibm.com> Signed-off-by: Valentin Rothberg <valentinrothberg@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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Linus Torvalds
|
2b4015e9fb |
platform-drivers-x86 for 4.5-1
Add intel punit and telemetry driver for APL SoCs. Add intel-hid driver for various laptop hotkey support. Add asus-wireless radio control driver. Keyboard backlight support/improvements for ThinkPads, Vaio, and Toshiba. Several hotkey related fixes and improvements for dell and toshiba. Fix oops on dual GPU Macs in apple-gmux. A few new device IDs and quirks. Various minor config related build issues and cleanups. surface pro 4: - fix compare_const_fl.cocci warnings - Add support for Surface Pro 4 Buttons platform/x86: - Add Intel Telemetry Debugfs interfaces - Add Intel telemetry platform device - Add Intel telemetry platform driver - Add Intel Telemetry Core Driver - add NULL check for input parameters - add Intel P-Unit mailbox IPC driver - update acpi resource structure for Punit thinkpad_acpi: - Add support for keyboard backlight dell-wmi: - Process only one event on devices with interface version 0 - Check if Dell WMI descriptor structure is valid - Improve unknown hotkey handling - Use a C99-style array for bios_to_linux_keycode tc1100-wmi: - fix build warning when CONFIG_PM not enabled asus-wireless: - Add ACPI HID ATK4001 - Add Asus Wireless Radio Control driver asus-wmi: - drop to_platform_driver macro intel-hid: - new hid event driver for hotkeys sony-laptop: - Keyboard backlight control for some Vaio Fit models ideapad-laptop: - Add Lenovo ideapad Y700-17ISK to no_hw_rfkill dmi list apple-gmux: - Assign apple_gmux_data before registering toshiba_acpi: - Add rfkill dependency to ACPI_TOSHIBA entry - Fix keyboard backlight sysfs entries not being updated - Add WWAN RFKill support - Add support for WWAN devices - Fix blank screen at boot if transflective backlight is supported - Propagate the hotkey value via genetlink toshiba_bluetooth: - Add missing newline in toshiba_bluetooth_present function -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQEcBAABAgAGBQJWnuSYAAoJEKbMaAwKp364xckH/A/INtwr1LzmSw8fsEIe6IGQ MKEzCHZOUdSPcZSHcTW/fE/J8kt1j4YdR2kkxNbivtxST5O81E6KfAmo37TRrTNx bunVt7Swj7FcPsm6t0m3PQkbWkOy3UMUncRaZjeofzhRl2m+bHEycEIJsHs7OU+e 7UPjbWZjRz6/LahcryKDH/lRhweMEsgZSFzjNlby8Wzz4LRCu8HLwNGUQa0vQfNI 2UW+s7g2ZkFXx9fbmWu9twkyP7LwNoaZ3IDGsEffIYjmXeZKe+yTPy/TueYYzpon aclJSjhxLNnfWUaO0eUt/H4T5VyUag3v3mp6PVSwm2TA3Cpuh1SDYrJcurls6Mw= =b4Wa -----END PGP SIGNATURE----- Merge tag 'platform-drivers-x86-v4.5-1' of git://git.infradead.org/users/dvhart/linux-platform-drivers-x86 Pull x86 platform driver updates from Darren Hart: "Add intel punit and telemetry driver for APL SoCs. Add intel-hid driver for various laptop hotkey support. Add asus-wireless radio control driver. Keyboard backlight support/improvements for ThinkPads, Vaio, and Toshiba. Several hotkey related fixes and improvements for dell and toshiba. Fix oops on dual GPU Macs in apple-gmux. A few new device IDs and quirks. Various minor config related build issues and cleanups. surface pro 4: - fix compare_const_fl.cocci warnings - Add support for Surface Pro 4 Buttons platform/x86: - Add Intel Telemetry Debugfs interfaces - Add Intel telemetry platform device - Add Intel telemetry platform driver - Add Intel Telemetry Core Driver - add NULL check for input parameters - add Intel P-Unit mailbox IPC driver - update acpi resource structure for Punit thinkpad_acpi: - Add support for keyboard backlight dell-wmi: - Process only one event on devices with interface version 0 - Check if Dell WMI descriptor structure is valid - Improve unknown hotkey handling - Use a C99-style array for bios_to_linux_keycode tc1100-wmi: - fix build warning when CONFIG_PM not enabled asus-wireless: - Add ACPI HID ATK4001 - Add Asus Wireless Radio Control driver asus-wmi: - drop to_platform_driver macro intel-hid: - new hid event driver for hotkeys sony-laptop: - Keyboard backlight control for some Vaio Fit models ideapad-laptop: - Add Lenovo ideapad Y700-17ISK to no_hw_rfkill dmi list apple-gmux: - Assign apple_gmux_data before registering toshiba_acpi: - Add rfkill dependency to ACPI_TOSHIBA entry - Fix keyboard backlight sysfs entries not being updated - Add WWAN RFKill support - Add support for WWAN devices - Fix blank screen at boot if transflective backlight is supported - Propagate the hotkey value via genetlink toshiba_bluetooth: - Add missing newline in toshiba_bluetooth_present function" * tag 'platform-drivers-x86-v4.5-1' of git://git.infradead.org/users/dvhart/linux-platform-drivers-x86: (29 commits) surface pro 4: fix compare_const_fl.cocci warnings surface pro 4: Add support for Surface Pro 4 Buttons platform:x86: Add Intel Telemetry Debugfs interfaces platform:x86: Add Intel telemetry platform device platform:x86: Add Intel telemetry platform driver platform/x86: Add Intel Telemetry Core Driver intel_punit_ipc: add NULL check for input parameters thinkpad_acpi: Add support for keyboard backlight dell-wmi: Process only one event on devices with interface version 0 dell-wmi: Check if Dell WMI descriptor structure is valid tc1100-wmi: fix build warning when CONFIG_PM not enabled asus-wireless: Add ACPI HID ATK4001 platform/x86: Add Asus Wireless Radio Control driver asus-wmi: drop to_platform_driver macro intel-hid: new hid event driver for hotkeys Keyboard backlight control for some Vaio Fit models platform/x86: Add rfkill dependency to ACPI_TOSHIBA entry platform:x86: add Intel P-Unit mailbox IPC driver intel_pmc_ipc: update acpi resource structure for Punit ideapad-laptop: Add Lenovo ideapad Y700-17ISK to no_hw_rfkill dmi list ... |
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Souvik Kumar Chakravarty
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378f956e3f |
platform/x86: Add Intel Telemetry Core Driver
Intel PM Telemetry is a software mechanism via which various SoC PM and performance related parameters like PM counters, firmware trace verbosity, the status of different devices inside the SoC, etc. can be monitored and analyzed. The different samples that may be monitored can be configured at runtime via exported APIs. This patch adds the telemetry core driver that implements basic exported APIs. Signed-off-by: Souvik Kumar Chakravarty <souvik.k.chakravarty@intel.com> Signed-off-by: Darren Hart <dvhart@linux.intel.com> |
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Qipeng Zha
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fdca4f16f5 |
platform:x86: add Intel P-Unit mailbox IPC driver
This driver provides support for P-Unit mailbox IPC on Intel platforms. The heart of the P-Unit is the Foxton microcontroller and its firmware, which provide mailbox interface for power management usage. Signed-off-by: Qipeng Zha <qipeng.zha@intel.com> Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Darren Hart <dvhart@linux.intel.com> |
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Linus Torvalds
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a200dcb346 |
virtio: barrier rework+fixes
This adds a new kind of barrier, and reworks virtio and xen to use it. Plus some fixes here and there. Signed-off-by: Michael S. Tsirkin <mst@redhat.com> -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQEcBAABAgAGBQJWlU2kAAoJECgfDbjSjVRpZ6IH/Ra19ecG8sCQo9zskr4zo22Z DZXC3u0sJDBYjjBAiw3IY1FKh7wx2Fr1RhUOj1bteBgcFCMCV1zInP5ITiCyzd1H YYh1w9C2tZaj2T4t9L4hIrAdtIF8fGS+oI2IojXPjOuDLEt6pfFBEjHp/sfl3UJq ZmZvw4OXviSNej7jBw8Xni3Uv18yfmLGXvMdkvMSPC1/XL29voGDqTVwhqJwxLVz k/ZLcKFOzIs9N7Nja0Jl1EiZtC2Y9cpItqweicNAzszlpkSL44vQxmCSefB+WyQ4 gt0O3+AxYkLfrxzCBhUA4IpRex3/XPW1b+1e/V1XjfR2n/FlyLe+AIa8uPJElFc= =ukaV -----END PGP SIGNATURE----- Merge tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost Pull virtio barrier rework+fixes from Michael Tsirkin: "This adds a new kind of barrier, and reworks virtio and xen to use it. Plus some fixes here and there" * tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost: (44 commits) checkpatch: add virt barriers checkpatch: check for __smp outside barrier.h checkpatch.pl: add missing memory barriers virtio: make find_vqs() checkpatch.pl-friendly virtio_balloon: fix race between migration and ballooning virtio_balloon: fix race by fill and leak s390: more efficient smp barriers s390: use generic memory barriers xen/events: use virt_xxx barriers xen/io: use virt_xxx barriers xenbus: use virt_xxx barriers virtio_ring: use virt_store_mb sh: move xchg_cmpxchg to a header by itself sh: support 1 and 2 byte xchg virtio_ring: update weak barriers to use virt_xxx Revert "virtio_ring: Update weak barriers to use dma_wmb/rmb" asm-generic: implement virt_xxx memory barriers x86: define __smp_xxx xtensa: define __smp_xxx tile: define __smp_xxx ... |
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Linus Torvalds
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0cbeafb245 |
Merge branch 'akpm' (patches from Andrew)
Merge second patch-bomb from Andrew Morton:
- more MM stuff:
- Kirill's page-flags rework
- Kirill's now-allegedly-fixed THP rework
- MADV_FREE implementation
- DAX feature work (msync/fsync). This isn't quite complete but DAX
is new and it's good enough and the guys have a handle on what
needs to be done - I expect this to be wrapped in the next week or
two.
- some vsprintf maintenance work
- various other misc bits
* emailed patches from Andrew Morton <akpm@linux-foundation.org>: (145 commits)
printk: change recursion_bug type to bool
lib/vsprintf: factor out %pN[F] handler as netdev_bits()
lib/vsprintf: refactor duplicate code to special_hex_number()
printk-formats.txt: remove unimplemented %pT
printk: help pr_debug and pr_devel to optimize out arguments
lib/test_printf.c: test dentry printing
lib/test_printf.c: add test for large bitmaps
lib/test_printf.c: account for kvasprintf tests
lib/test_printf.c: add a few number() tests
lib/test_printf.c: test precision quirks
lib/test_printf.c: check for out-of-bound writes
lib/test_printf.c: don't BUG
lib/kasprintf.c: add sanity check to kvasprintf
lib/vsprintf.c: warn about too large precisions and field widths
lib/vsprintf.c: help gcc make number() smaller
lib/vsprintf.c: expand field_width to 24 bits
lib/vsprintf.c: eliminate potential race in string()
lib/vsprintf.c: move string() below widen_string()
lib/vsprintf.c: pull out padding code from dentry_name()
printk: do cond_resched() between lines while outputting to consoles
...
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Linus Torvalds
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a016af2e70 |
sound updates for 4.5-rc1
We've had quite busy weeks in this cycle. Looking at ALSA core, the
significant changes are a few fixes wrt timer and sequencer ioctls
that have been revealed by fuzzer recently. Other than that, ASoC
core got a few updates about DAI link handling, but these are rather
straightforward refactoring.
In drivers scene, ASoC received quite lots of new drivers in addition
to bunch of updates for still ongoing Intel Skylake support and
topology API. HD-audio gained a new HDMI/DP hotplug notification via
component. FireWire got a pile of code refactoring/updates with
SCS.1x driver integration.
More highlights are shown below.
[NOTE: this contains also many commits for DRM. This is due to the
pull of drm stable branch into sound tree, as the base of i915 audio
component work for HD-audio. The highlights below don't contain
these DRM changes, as these are supposed to be pulled via drm tree in
anyway sooner or later.]
Core
- Handful fixes to harden ALSA timer and sequencer ioctls against
races reported by syzkaller fuzzer
- Irq description string can be unique to each card; only for
HD-audio for now
ASoC
- Conversion of the array of DAI links to a list for supporting
dynamically adding and removing DAI links
- Topology API enhancements to make everything more component based
and being able to specify PCM links via topology
- Some more fixes for the topology code, though it is still not final
and ready for enabling in production; we really need to get to the
point where that can be done
- A pile of changes for Intel SkyLake drivers which hopefully deliver
some useful initial functionality for systems with this chipset,
though there is more work still to come
- Lots of new features and cleanups for the Renesas drivers
- ANC support for WM5110
- New drivers: Imagination Technologies IPs, Atmel class D speaker,
Cirrus CS47L24 and WM1831, Dialog DA7128, Realtek RT5659 and
RT56156, Rockchip RK3036, TI PC3168A, and AMD ACP
- Rename PCM1792a driver to be generic pcm179x
HD-Audio
- Use audio component for i915 HDMI/DP hotplug handling
- On-demand binding with i915 driver
- bdl_pos_adj parameter adjustment for Baytrail controllers
- Enable power_save_node for CX20722; this shouldn't lead to
regression, hopefully
- Kabylake HDMI/DP codec support
- Quirks for Lenovo E50-80, Dell Latitude E-series, and other Dell
machines
- A few code refactoring
FireWire
- Lots of code cleanup and refactoring
- Integrate the support of SCS.1x devices into snd-oxfw driver;
snd-scs1x driver is obsoleted
USB-audio
- Fix possible NULL dereference at disconnection
- A regression fix for Native Instruments devices
Misc
- A few code cleanups of fm801 driver
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Merge tag 'sound-4.5-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound
Pull sound updates from Takashi Iwai:
"We've had quite busy weeks in this cycle. Looking at ALSA core, the
significant changes are a few fixes wrt timer and sequencer ioctls
that have been revealed by fuzzer recently. Other than that, ASoC
core got a few updates about DAI link handling, but these are rather
straightforward refactoring.
In drivers scene, ASoC received quite lots of new drivers in addition
to bunch of updates for still ongoing Intel Skylake support and
topology API. HD-audio gained a new HDMI/DP hotplug notification via
component. FireWire got a pile of code refactoring/updates with
SCS.1x driver integration.
More highlights are shown below.
[ NOTE: this contains also many commits for DRM. This is due to the
pull of drm stable branch into sound tree, as the base of i915 audio
component work for HD-audio. The highlights below don't contain
these DRM changes, as these are supposed to be pulled via drm tree
in anyway sooner or later. ]
Core:
- Handful fixes to harden ALSA timer and sequencer ioctls against
races reported by syzkaller fuzzer
- Irq description string can be unique to each card; only for
HD-audio for now
ASoC:
- Conversion of the array of DAI links to a list for supporting
dynamically adding and removing DAI links
- Topology API enhancements to make everything more component based
and being able to specify PCM links via topology
- Some more fixes for the topology code, though it is still not final
and ready for enabling in production; we really need to get to the
point where that can be done
- A pile of changes for Intel SkyLake drivers which hopefully deliver
some useful initial functionality for systems with this chipset,
though there is more work still to come
- Lots of new features and cleanups for the Renesas drivers
- ANC support for WM5110
- New drivers: Imagination Technologies IPs, Atmel class D speaker,
Cirrus CS47L24 and WM1831, Dialog DA7128, Realtek RT5659 and
RT56156, Rockchip RK3036, TI PC3168A, and AMD ACP
- Rename PCM1792a driver to be generic pcm179x
HD-Audio:
- Use audio component for i915 HDMI/DP hotplug handling
- On-demand binding with i915 driver
- bdl_pos_adj parameter adjustment for Baytrail controllers
- Enable power_save_node for CX20722; this shouldn't lead to
regression, hopefully
- Kabylake HDMI/DP codec support
- Quirks for Lenovo E50-80, Dell Latitude E-series, and other Dell
machines
- A few code refactoring
FireWire:
- Lots of code cleanup and refactoring
- Integrate the support of SCS.1x devices into snd-oxfw driver;
snd-scs1x driver is obsoleted
USB-audio:
- Fix possible NULL dereference at disconnection
- A regression fix for Native Instruments devices
Misc:
- A few code cleanups of fm801 driver"
* tag 'sound-4.5-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: (722 commits)
ALSA: timer: Code cleanup
ALSA: timer: Harden slave timer list handling
ALSA: hda - Add fixup for Dell Latitidue E6540
ALSA: timer: Fix race among timer ioctls
ALSA: hda - add codec support for Kabylake display audio codec
ALSA: timer: Fix double unlink of active_list
ALSA: usb-audio: Fix mixer ctl regression of Native Instrument devices
ALSA: hda - fix the headset mic detection problem for a Dell laptop
ALSA: hda - Fix white noise on Dell Latitude E5550
ALSA: hda_intel: add card number to irq description
ALSA: seq: Fix race at timer setup and close
ALSA: seq: Fix missing NULL check at remove_events ioctl
ALSA: usb-audio: Avoid calling usb_autopm_put_interface() at disconnect
ASoC: hdac_hdmi: remove unused hdac_hdmi_query_pin_connlist
ASoC: AMD: Add missing include file
ALSA: hda - Fixup inverted internal mic for Lenovo E50-80
ALSA: usb: Add native DSD support for Oppo HA-1
ASoC: Make aux_dev more like a generic component
ASoC: bcm2835: cleanup includes by ordering them alphabetically
ASoC: AMD: Manage ACP 2.x SRAM banks power
...
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Dan Williams
|
3565fce3a6 |
mm, x86: get_user_pages() for dax mappings
A dax mapping establishes a pte with _PAGE_DEVMAP set when the driver has established a devm_memremap_pages() mapping, i.e. when the pfn_t return from ->direct_access() has PFN_DEV and PFN_MAP set. Later, when encountering _PAGE_DEVMAP during a page table walk we lookup and pin a struct dev_pagemap instance to keep the result of pfn_to_page() valid until put_page(). Signed-off-by: Dan Williams <dan.j.williams@intel.com> Tested-by: Logan Gunthorpe <logang@deltatee.com> Cc: Dave Hansen <dave@sr71.net> Cc: Mel Gorman <mgorman@suse.de> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Andrea Arcangeli <aarcange@redhat.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@redhat.com> Cc: "H. Peter Anvin" <hpa@zytor.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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Dan Williams
|
5c7fb56e5e |
mm, dax: dax-pmd vs thp-pmd vs hugetlbfs-pmd
A dax-huge-page mapping while it uses some thp helpers is ultimately not a transparent huge page. The distinction is especially important in the get_user_pages() path. pmd_devmap() is used to distinguish dax-pmds from pmd_huge() and pmd_trans_huge() which have slightly different semantics. Explicitly mark the pmd_trans_huge() helpers that dax needs by adding pmd_devmap() checks. [kirill.shutemov@linux.intel.com: fix regression in handling mlocked pages in __split_huge_pmd()] Signed-off-by: Dan Williams <dan.j.williams@intel.com> Cc: Dave Hansen <dave@sr71.net> Cc: Mel Gorman <mgorman@suse.de> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Andrea Arcangeli <aarcange@redhat.com> Cc: Matthew Wilcox <willy@linux.intel.com> Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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Dan Williams
|
f25748e3c3 |
mm, dax: convert vmf_insert_pfn_pmd() to pfn_t
Similar to the conversion of vm_insert_mixed() use pfn_t in the vmf_insert_pfn_pmd() to tag the resulting pte with _PAGE_DEVICE when the pfn is backed by a devm_memremap_pages() mapping. Signed-off-by: Dan Williams <dan.j.williams@intel.com> Cc: Dave Hansen <dave@sr71.net> Cc: Matthew Wilcox <willy@linux.intel.com> Cc: Alexander Viro <viro@zeniv.linux.org.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
|
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Dan Williams
|
01c8f1c44b |
mm, dax, gpu: convert vm_insert_mixed to pfn_t
Convert the raw unsigned long 'pfn' argument to pfn_t for the purpose of evaluating the PFN_MAP and PFN_DEV flags. When both are set it triggers _PAGE_DEVMAP to be set in the resulting pte. There are no functional changes to the gpu drivers as a result of this conversion. Signed-off-by: Dan Williams <dan.j.williams@intel.com> Cc: Dave Hansen <dave@sr71.net> Cc: David Airlie <airlied@linux.ie> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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Dan Williams
|
69660fd797 |
x86, mm: introduce _PAGE_DEVMAP
_PAGE_DEVMAP is a hardware-unused pte bit that will later be used in the get_user_pages() path to identify pfns backed by the dynamic allocation established by devm_memremap_pages. Upon seeing that bit the gup path will lookup and pin the allocation while the pages are in use. Since the _PAGE_DEVMAP bit is > 32 it must be cast to u64 instead of a pteval_t to allow pmd_flags() usage in the realmode boot code to build. Signed-off-by: Dan Williams <dan.j.williams@intel.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@redhat.com> Cc: "H. Peter Anvin" <hpa@zytor.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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Dan Williams
|
52db400fcd |
pmem, dax: clean up clear_pmem()
To date, we have implemented two I/O usage models for persistent memory, PMEM (a persistent "ram disk") and DAX (mmap persistent memory into userspace). This series adds a third, DAX-GUP, that allows DAX mappings to be the target of direct-i/o. It allows userspace to coordinate DMA/RDMA from/to persistent memory. The implementation leverages the ZONE_DEVICE mm-zone that went into 4.3-rc1 (also discussed at kernel summit) to flag pages that are owned and dynamically mapped by a device driver. The pmem driver, after mapping a persistent memory range into the system memmap via devm_memremap_pages(), arranges for DAX to distinguish pfn-only versus page-backed pmem-pfns via flags in the new pfn_t type. The DAX code, upon seeing a PFN_DEV+PFN_MAP flagged pfn, flags the resulting pte(s) inserted into the process page tables with a new _PAGE_DEVMAP flag. Later, when get_user_pages() is walking ptes it keys off _PAGE_DEVMAP to pin the device hosting the page range active. Finally, get_page() and put_page() are modified to take references against the device driver established page mapping. Finally, this need for "struct page" for persistent memory requires memory capacity to store the memmap array. Given the memmap array for a large pool of persistent may exhaust available DRAM introduce a mechanism to allocate the memmap from persistent memory. The new "struct vmem_altmap *" parameter to devm_memremap_pages() enables arch_add_memory() to use reserved pmem capacity rather than the page allocator. This patch (of 25): Both __dax_pmd_fault, and clear_pmem() were taking special steps to clear memory a page at a time to take advantage of non-temporal clear_page() implementations. However, x86_64 does not use non-temporal instructions for clear_page(), and arch_clear_pmem() was always incurring the cost of __arch_wb_cache_pmem(). Clean up the assumption that doing clear_pmem() a page at a time is more performant. Signed-off-by: Dan Williams <dan.j.williams@intel.com> Reported-by: Dave Hansen <dave.hansen@linux.intel.com> Reviewed-by: Ross Zwisler <ross.zwisler@linux.intel.com> Reviewed-by: Jeff Moyer <jmoyer@redhat.com> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Alexander Viro <viro@zeniv.linux.org.uk> Cc: Andrea Arcangeli <aarcange@redhat.com> Cc: Christoffer Dall <christoffer.dall@linaro.org> Cc: Christoph Hellwig <hch@lst.de> Cc: Dave Chinner <david@fromorbit.com> Cc: David Airlie <airlied@linux.ie> Cc: Ingo Molnar <mingo@redhat.com> Cc: Jan Kara <jack@suse.com> Cc: Jeff Dike <jdike@addtoit.com> Cc: Jens Axboe <axboe@fb.com> Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Cc: Logan Gunthorpe <logang@deltatee.com> Cc: Matthew Wilcox <willy@linux.intel.com> Cc: Mel Gorman <mgorman@suse.de> Cc: Paolo Bonzini <pbonzini@redhat.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Richard Weinberger <richard@nod.at> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Toshi Kani <toshi.kani@hpe.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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Minchan Kim
|
590a471ce9 |
arch/x86/include/asm/pgtable.h: add pmd_[dirty|mkclean] for THP
MADV_FREE needs pmd_dirty and pmd_mkclean for detecting recent overwrite of the contents since MADV_FREE syscall is called for THP page. This patch adds pmd_dirty and pmd_mkclean for THP page MADV_FREE support. Signed-off-by: Minchan Kim <minchan@kernel.org> Cc: "James E.J. Bottomley" <jejb@parisc-linux.org> Cc: "Kirill A. Shutemov" <kirill@shutemov.name> Cc: Shaohua Li <shli@kernel.org> Cc: <yalin.wang2010@gmail.com> Cc: Andrea Arcangeli <aarcange@redhat.com> Cc: Andy Lutomirski <luto@amacapital.net> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Chen Gang <gang.chen.5i5j@gmail.com> Cc: Chris Zankel <chris@zankel.net> Cc: Daniel Micay <danielmicay@gmail.com> Cc: Darrick J. Wong <darrick.wong@oracle.com> Cc: David S. Miller <davem@davemloft.net> Cc: Helge Deller <deller@gmx.de> Cc: Hugh Dickins <hughd@google.com> Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru> Cc: Jason Evans <je@fb.com> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Cc: Kirill A. Shutemov <kirill@shutemov.name> Cc: Matt Turner <mattst88@gmail.com> Cc: Max Filippov <jcmvbkbc@gmail.com> Cc: Mel Gorman <mgorman@suse.de> Cc: Michael Kerrisk <mtk.manpages@gmail.com> Cc: Michal Hocko <mhocko@suse.com> Cc: Mika Penttil <mika.penttila@nextfour.com> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Richard Henderson <rth@twiddle.net> Cc: Rik van Riel <riel@redhat.com> Cc: Roland Dreier <roland@kernel.org> Cc: Russell King <rmk@arm.linux.org.uk> Cc: Shaohua Li <shli@kernel.org> Cc: Will Deacon <will.deacon@arm.com> Cc: Wu Fengguang <fengguang.wu@intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
|
|
Kirill A. Shutemov
|
1f19617d77 |
x86, thp: remove infrastructure for handling splitting PMDs
With new refcounting we don't need to mark PMDs splitting. Let's drop code to handle this. Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Tested-by: Sasha Levin <sasha.levin@oracle.com> Acked-by: Jerome Marchand <jmarchan@redhat.com> Cc: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Cc: Vlastimil Babka <vbabka@suse.cz> Cc: Andrea Arcangeli <aarcange@redhat.com> Cc: Hugh Dickins <hughd@google.com> Cc: Dave Hansen <dave.hansen@intel.com> Cc: Mel Gorman <mgorman@suse.de> Cc: Rik van Riel <riel@redhat.com> Cc: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com> Cc: Steve Capper <steve.capper@linaro.org> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: Michal Hocko <mhocko@suse.cz> Cc: Christoph Lameter <cl@linux.com> Cc: David Rientjes <rientjes@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
|
|
Bjorn Helgaas
|
3a6384ba10 |
Merge branch 'pci/host-vmd' into next
* pci/host-vmd: x86/PCI: Add driver for Intel Volume Management Device (VMD) PCI/AER: Use 32 bit PCI domain numbers x86/PCI: Allow DMA ops specific to a PCI domain irqdomain: Export irq_domain_set_info() for module use genirq/MSI: Relax msi_domain_alloc() to support parentless MSI irqdomains |
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Keith Busch
|
185a383ada |
x86/PCI: Add driver for Intel Volume Management Device (VMD)
The Intel Volume Management Device (VMD) is a Root Complex Integrated
Endpoint that acts as a host bridge to a secondary PCIe domain. BIOS can
reassign one or more Root Ports to appear within a VMD domain instead of
the primary domain. The immediate benefit is that additional PCIe domains
allow more than 256 buses in a system by letting bus numbers be reused
across different domains.
VMD domains do not define ACPI _SEG, so to avoid domain clashing with host
bridges defining this segment, VMD domains start at 0x10000, which is
greater than the highest possible 16-bit ACPI defined _SEG.
This driver enumerates and enables the domain using the root bus
configuration interface provided by the PCI subsystem. The driver provides
configuration space accessor functions (pci_ops), bus and memory resources,
an MSI IRQ domain with irq_chip implementation, and DMA operations
necessary to use devices through the VMD endpoint's interface.
VMD routes I/O as follows:
1) Configuration Space: BAR 0 ("CFGBAR") of VMD provides the base
address and size for configuration space register access to VMD-owned
root ports. It works similarly to MMCONFIG for extended configuration
space. Bus numbering is independent and does not conflict with the
primary domain.
2) MMIO Space: BARs 2 and 4 ("MEMBAR1" and "MEMBAR2") of VMD provide the
base address, size, and type for MMIO register access. These addresses
are not translated by VMD hardware; they are simply reservations to be
distributed to root ports' memory base/limit registers and subdivided
among devices downstream.
3) DMA: To interact appropriately with an IOMMU, the source ID DMA read
and write requests are translated to the bus-device-function of the VMD
endpoint. Otherwise, DMA operates normally without VMD-specific address
translation.
4) Interrupts: Part of VMD's BAR 4 is reserved for VMD's MSI-X Table and
PBA. MSIs from VMD domain devices and ports are remapped to appear as
if they were issued using one of VMD's MSI-X table entries. Each MSI
and MSI-X address of VMD-owned devices and ports has a special format
where the address refers to specific entries in the VMD's MSI-X table.
As with DMA, the interrupt source ID is translated to VMD's
bus-device-function.
The driver provides its own MSI and MSI-X configuration functions
specific to how MSI messages are used within the VMD domain, and
provides an irq_chip for independent IRQ allocation to relay interrupts
from VMD's interrupt handler to the appropriate device driver's handler.
5) Errors: PCIe error message are intercepted by the root ports normally
(e.g., AER), except with VMD, system errors (i.e., firmware first) are
disabled by default. AER and hotplug interrupts are translated in the
same way as endpoint interrupts.
6) VMD does not support INTx interrupts or IO ports. Devices or drivers
requiring these features should either not be placed below VMD-owned
root ports, or VMD should be disabled by BIOS for such endpoints.
[bhelgaas: add VMD BAR #defines, factor out vmd_cfg_addr(), rework VMD
resource setup, whitespace, changelog]
Signed-off-by: Keith Busch <keith.busch@intel.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Thomas Gleixner <tglx@linutronix.de> (IRQ-related parts)
|
|
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Keith Busch
|
d9c3d6ff22 |
x86/PCI: Allow DMA ops specific to a PCI domain
The Intel Volume Management Device (VMD) is a PCIe endpoint that acts as a host bridge to another PCI domain. When devices below the VMD perform DMA, the VMD replaces their DMA source IDs with its own source ID. Therefore, those devices require special DMA ops. Add interfaces to allow the VMD driver to set up dma_ops for the devices below it. [bhelgaas: remove "extern", add "static", changelog] Signed-off-by: Keith Busch <keith.busch@intel.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> |
|
|
Thomas Gleixner
|
90a2282e23 |
x86/irq: Call irq_force_move_complete with irq descriptor
First of all there is no point in looking up the irq descriptor again, but we also need the descriptor for the final cleanup race fix in the next patch. Make that change seperate. No functional difference. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Tested-by: Borislav Petkov <bp@alien8.de> Tested-by: Joe Lawrence <joe.lawrence@stratus.com> Cc: Jiang Liu <jiang.liu@linux.intel.com> Cc: Jeremiah Mahler <jmmahler@gmail.com> Cc: andy.shevchenko@gmail.com Cc: Guenter Roeck <linux@roeck-us.net> Cc: stable@vger.kernel.org #4.3+ Link: http://lkml.kernel.org/r/20151231160107.125211743@linutronix.de Signed-off-by: Thomas Gleixner <tglx@linutronix.de> |
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Linus Torvalds
|
10a0c0f059 |
Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 fixes from Ingo Molnar: "Misc changes: - fix lguest bug - fix /proc/meminfo output on certain configs - fix pvclock bug - fix reboot on certain iMacs by adding new reboot quirk - fix bootup crash - fix FPU boot line option parsing - add more x86 self-tests - small cleanups, documentation improvements, etc" * 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/cpu/amd: Remove an unneeded condition in srat_detect_node() x86/vdso/pvclock: Protect STABLE check with the seqcount x86/mm: Improve switch_mm() barrier comments selftests/x86: Test __kernel_sigreturn and __kernel_rt_sigreturn x86/reboot/quirks: Add iMac10,1 to pci_reboot_dmi_table[] lguest: Map switcher text R/O x86/boot: Hide local labels in verify_cpu() x86/fpu: Disable AVX when eagerfpu is off x86/fpu: Disable MPX when eagerfpu is off x86/fpu: Disable XGETBV1 when no XSAVE x86/fpu: Fix early FPU command-line parsing x86/mm: Use PAGE_ALIGNED instead of IS_ALIGNED selftests/x86: Disable the ldt_gdt_64 test for now x86/mm/pat: Make split_page_count() check for empty levels to fix /proc/meminfo output x86/boot: Double BOOT_HEAP_SIZE to 64KB x86/mm: Add barriers and document switch_mm()-vs-flush synchronization |
|
|
Andy Lutomirski
|
4eaffdd5a5 |
x86/mm: Improve switch_mm() barrier comments
My previous comments were still a bit confusing and there was a
typo. Fix it up.
Reported-by: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: Andy Lutomirski <luto@kernel.org>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Rik van Riel <riel@redhat.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: stable@vger.kernel.org
Fixes:
|
|
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Linus Torvalds
|
67990608c8 |
Power management and ACPI updates for v4.5-rc1
- Add a debugfs-based interface for interacting with the ACPICA's
AML debugger introduced in the previous cycle and a new user
space tool for that, fix some bugs related to the AML debugger
and clean up the code in question (Lv Zheng, Dan Carpenter,
Colin Ian King, Markus Elfring).
- Update ACPICA to upstream revision 20151218 including a number
of fixes and cleanups in the ACPICA core (Bob Moore, Lv Zheng,
Labbe Corentin, Prarit Bhargava, Colin Ian King, David E Box,
Rafael Wysocki).
In particular, the previously added erroneous support for the
_SUB object is dropped, the concatenate operator will support
all ACPI objects now, the Debug Object handling is improved,
the SuperName handling of parameters being control methods is
fixed, the ObjectType operator handling is updated to follow
ACPI 5.0A and the handling of CondRefOf and RefOf is updated
accordingly, module-level code will be executed after loading
each ACPI table now (instead of being run once after all tables
containing AML have been loaded), the Operation Region handlers
management is updated to fix some reported problems and a the
ACPICA code in the kernel is more in line with the upstream
now.
- Update the ACPI backlight driver to provide information on
whether or not it will generate key-presses for brightness
change hotkeys and update some platform drivers (dell-wmi,
thinkpad_acpi) to use that information to avoid sending double
key-events to users pace for these, add new ACPI backlight
quirks (Hans de Goede, Aaron Lu, Adrien Schildknecht).
- Improve the ACPI handling of interrupt GPIOs (Christophe Ricard).
- Fix the handling of the list of device IDs of device objects
found in the ACPI namespace and add a helper for checking if
there is a device object for a given device ID (Lukas Wunner).
- Change the logic in the ACPI namespace scanning code to create
struct acpi_device objects for all ACPI device objects found in
the namespace even if _STA fails for them which helps to avoid
device enumeration problems on Microsoft Surface 3 (Aaron Lu).
- Add support for the APM X-Gene ACPI I2C device to the ACPI
driver for AMD SoCs (Loc Ho).
- Fix the long-standing issue with the DMA controller on Intel
SoCs where ACPI tables have no power management support for
the DMA controller itself, but it can be powered off automatically
when the last (other) device on the SoC is powered off via ACPI
and clean up the ACPI driver for Intel SoCs (acpi-lpss) after
previous attempts to fix that problem (Andy Shevchenko).
- Assorted ACPI fixes and cleanups (Andy Lutomirski, Colin Ian King,
Javier Martinez Canillas, Ken Xue, Mathias Krause, Rafael Wysocki,
Sinan Kaya).
- Update the device properties framework for better handling of
built-in properties, add support for built-in properties to
the platform bus type, update the MFD subsystem's handling
of device properties and add support for passing default
configuration data as device properties to the intel-lpss MFD
drivers, convert the designware I2C driver to use the unified
device properties API and add a fallback mechanism for using
default built-in properties if the platform firmware fails
to provide the properties as expected by drivers (Andy Shevchenko,
Mika Westerberg, Heikki Krogerus, Andrew Morton).
- Add new Device Tree bindings to the Operating Performance Points
(OPP) framework and update the exynos4412 DT binding accordingly,
introduce debugfs support for the OPP framework (Viresh Kumar,
Bartlomiej Zolnierkiewicz).
- Migrate the mt8173 cpufreq driver to the new OPP bindings
(Pi-Cheng Chen).
- Update the cpufreq core to make the handling of governors
more efficient, especially on systems where policy objects
are shared between multiple CPUs (Viresh Kumar, Rafael Wysocki).
- Fix cpufreq governor handling on configurations with
CONFIG_HZ_PERIODIC set (Chen Yu).
- Clean up the cpufreq core code related to the boost sysfs knob
support and update the ACPI cpufreq driver accordingly (Rafael
Wysocki).
- Add a new cpufreq driver for ST platforms and corresponding
Device Tree bindings (Lee Jones).
- Update the intel_pstate driver to allow the P-state selection
algorithm used by it to depend on the CPU ID of the processor it
is running on, make it use a special P-state selection algorithm
(with an IO wait time compensation tweak) on Atom CPUs based on
the Airmont and Silvermont cores so as to reduce their energy
consumption and improve intel_pstate documentation (Philippe
Longepe, Srinivas Pandruvada).
- Update the cpufreq-dt driver to support registering cooling
devices that use the (P * V^2 * f) dynamic power draw formula
where V is the voltage, f is the frequency and P is a constant
coefficient provided by Device Tree and update the arm_big_little
cpufreq driver to use that support (Punit Agrawal).
- Assorted cpufreq driver (cpufreq-dt, qoriq, pcc-cpufreq,
blackfin-cpufreq) updates (Andrzej Hajda, Hongtao Jia,
Jacob Tanenbaum, Markus Elfring).
- cpuidle core tweaks related to polling and measured_us
calculation (Rik van Riel).
- Removal of modularity from a few cpuidle drivers (clps711x,
ux500, exynos) that cannot be built as modules in practice
(Paul Gortmaker).
- PM core update to prevent devices from being probed during
system suspend/resume which is generally problematic and may
lead to inconsistent behavior (Grygorii Strashko).
- Assorted updates of the PM core and related code (Julia Lawall,
Manuel Pégourié-Gonnard, Maruthi Bayyavarapu, Rafael Wysocki,
Ulf Hansson).
- PNP bus type updates (Christophe Le Roy, Heiner Kallweit).
- PCI PM code cleanups (Jarkko Nikula, Julia Lawall).
- cpupower tool updates (Jacob Tanenbaum, Thomas Renninger).
/
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Merge tag 'pm+acpi-4.5-rc1-1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull oower management and ACPI updates from Rafael Wysocki:
"As far as the number of commits goes, ACPICA takes the lead this time,
followed by cpufreq and the device properties framework changes.
The most significant new feature is the debugfs-based interface to the
ACPICA's AML debugger added in the previous cycle and a new user space
tool for accessing it.
On the cpufreq front, the core is updated to handle governors more
efficiently, particularly on systems where a single cpufreq policy
object is shared between multiple CPUs, and there are quite a few
changes in drivers (intel_pstate, cpufreq-dt etc).
The device properties framework is updated to handle built-in (ie
included in the kernel itself) device properties better, among other
things by adding a fallback mechanism that will allow drivers to
provide default properties to be used in case the plaform firmware
doesn't provide the properties expected by them.
The Operating Performance Points (OPP) framework gets new DT bindings
and debugfs support.
A new cpufreq driver for ST platforms is added and the ACPI driver for
AMD SoCs will now support the APM X-Gene ACPI I2C device.
The rest is mostly fixes and cleanups all over.
Specifics:
- Add a debugfs-based interface for interacting with the ACPICA's AML
debugger introduced in the previous cycle and a new user space tool
for that, fix some bugs related to the AML debugger and clean up
the code in question (Lv Zheng, Dan Carpenter, Colin Ian King,
Markus Elfring).
- Update ACPICA to upstream revision 20151218 including a number of
fixes and cleanups in the ACPICA core (Bob Moore, Lv Zheng, Labbe
Corentin, Prarit Bhargava, Colin Ian King, David E Box, Rafael
Wysocki).
In particular, the previously added erroneous support for the _SUB
object is dropped, the concatenate operator will support all ACPI
objects now, the Debug Object handling is improved, the SuperName
handling of parameters being control methods is fixed, the
ObjectType operator handling is updated to follow ACPI 5.0A and the
handling of CondRefOf and RefOf is updated accordingly, module-
level code will be executed after loading each ACPI table now
(instead of being run once after all tables containing AML have
been loaded), the Operation Region handlers management is updated
to fix some reported problems and a the ACPICA code in the kernel
is more in line with the upstream now.
- Update the ACPI backlight driver to provide information on whether
or not it will generate key-presses for brightness change hotkeys
and update some platform drivers (dell-wmi, thinkpad_acpi) to use
that information to avoid sending double key-events to users pace
for these, add new ACPI backlight quirks (Hans de Goede, Aaron Lu,
Adrien Schildknecht).
- Improve the ACPI handling of interrupt GPIOs (Christophe Ricard).
- Fix the handling of the list of device IDs of device objects found
in the ACPI namespace and add a helper for checking if there is a
device object for a given device ID (Lukas Wunner).
- Change the logic in the ACPI namespace scanning code to create
struct acpi_device objects for all ACPI device objects found in the
namespace even if _STA fails for them which helps to avoid device
enumeration problems on Microsoft Surface 3 (Aaron Lu).
- Add support for the APM X-Gene ACPI I2C device to the ACPI driver
for AMD SoCs (Loc Ho).
- Fix the long-standing issue with the DMA controller on Intel SoCs
where ACPI tables have no power management support for the DMA
controller itself, but it can be powered off automatically when the
last (other) device on the SoC is powered off via ACPI and clean up
the ACPI driver for Intel SoCs (acpi-lpss) after previous attempts
to fix that problem (Andy Shevchenko).
- Assorted ACPI fixes and cleanups (Andy Lutomirski, Colin Ian King,
Javier Martinez Canillas, Ken Xue, Mathias Krause, Rafael Wysocki,
Sinan Kaya).
- Update the device properties framework for better handling of
built-in properties, add support for built-in properties to the
platform bus type, update the MFD subsystem's handling of device
properties and add support for passing default configuration data
as device properties to the intel-lpss MFD drivers, convert the
designware I2C driver to use the unified device properties API and
add a fallback mechanism for using default built-in properties if
the platform firmware fails to provide the properties as expected
by drivers (Andy Shevchenko, Mika Westerberg, Heikki Krogerus,
Andrew Morton).
- Add new Device Tree bindings to the Operating Performance Points
(OPP) framework and update the exynos4412 DT binding accordingly,
introduce debugfs support for the OPP framework (Viresh Kumar,
Bartlomiej Zolnierkiewicz).
- Migrate the mt8173 cpufreq driver to the new OPP bindings (Pi-Cheng
Chen).
- Update the cpufreq core to make the handling of governors more
efficient, especially on systems where policy objects are shared
between multiple CPUs (Viresh Kumar, Rafael Wysocki).
- Fix cpufreq governor handling on configurations with
CONFIG_HZ_PERIODIC set (Chen Yu).
- Clean up the cpufreq core code related to the boost sysfs knob
support and update the ACPI cpufreq driver accordingly (Rafael
Wysocki).
- Add a new cpufreq driver for ST platforms and corresponding Device
Tree bindings (Lee Jones).
- Update the intel_pstate driver to allow the P-state selection
algorithm used by it to depend on the CPU ID of the processor it is
running on, make it use a special P-state selection algorithm (with
an IO wait time compensation tweak) on Atom CPUs based on the
Airmont and Silvermont cores so as to reduce their energy
consumption and improve intel_pstate documentation (Philippe
Longepe, Srinivas Pandruvada).
- Update the cpufreq-dt driver to support registering cooling devices
that use the (P * V^2 * f) dynamic power draw formula where V is
the voltage, f is the frequency and P is a constant coefficient
provided by Device Tree and update the arm_big_little cpufreq
driver to use that support (Punit Agrawal).
- Assorted cpufreq driver (cpufreq-dt, qoriq, pcc-cpufreq,
blackfin-cpufreq) updates (Andrzej Hajda, Hongtao Jia, Jacob
Tanenbaum, Markus Elfring).
- cpuidle core tweaks related to polling and measured_us calculation
(Rik van Riel).
- Removal of modularity from a few cpuidle drivers (clps711x, ux500,
exynos) that cannot be built as modules in practice (Paul
Gortmaker).
- PM core update to prevent devices from being probed during system
suspend/resume which is generally problematic and may lead to
inconsistent behavior (Grygorii Strashko).
- Assorted updates of the PM core and related code (Julia Lawall,
Manuel Pégourié-Gonnard, Maruthi Bayyavarapu, Rafael Wysocki, Ulf
Hansson).
- PNP bus type updates (Christophe Le Roy, Heiner Kallweit).
- PCI PM code cleanups (Jarkko Nikula, Julia Lawall).
- cpupower tool updates (Jacob Tanenbaum, Thomas Renninger)"
* tag 'pm+acpi-4.5-rc1-1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (177 commits)
PM / clk: don't leave clocks enabled when driver not bound
i2c: dw: Add APM X-Gene ACPI I2C device support
ACPI / APD: Add APM X-Gene ACPI I2C device support
ACPI / LPSS: change 'does not have' to 'has' in comment
Revert "dmaengine: dw: platform: provide platform data for Intel"
dmaengine: dw: return immediately from IRQ when DMA isn't in use
dmaengine: dw: platform: power on device on shutdown
ACPI / LPSS: override power state for LPSS DMA device
PM / OPP: Use snprintf() instead of sprintf()
Documentation: cpufreq: intel_pstate: enhance documentation
ACPI, PCI, irq: remove redundant check for null string pointer
ACPI / video: driver must be registered before checking for keypresses
cpufreq-dt: fix handling regulator_get_voltage() result
cpufreq: governor: Fix negative idle_time when configured with CONFIG_HZ_PERIODIC
PM / sleep: Add support for read-only sysfs attributes
ACPI: Fix white space in a structure definition
ACPI / SBS: fix inconsistent indenting inside if statement
PNP: respect PNP_DRIVER_RES_DO_NOT_CHANGE when detaching
ACPI / PNP: constify device IDs
ACPI / PCI: Simplify acpi_penalize_isa_irq()
...
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Linus Torvalds
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1baa5efbeb |
* s390: Support for runtime instrumentation within guests,
support of 248 VCPUs.
* ARM: rewrite of the arm64 world switch in C, support for
16-bit VM identifiers. Performance counter virtualization
missed the boat.
* x86: Support for more Hyper-V features (synthetic interrupt
controller), MMU cleanups
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm
Pull KVM updates from Paolo Bonzini:
"PPC changes will come next week.
- s390: Support for runtime instrumentation within guests, support of
248 VCPUs.
- ARM: rewrite of the arm64 world switch in C, support for 16-bit VM
identifiers. Performance counter virtualization missed the boat.
- x86: Support for more Hyper-V features (synthetic interrupt
controller), MMU cleanups"
* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (115 commits)
kvm: x86: Fix vmwrite to SECONDARY_VM_EXEC_CONTROL
kvm/x86: Hyper-V SynIC timers tracepoints
kvm/x86: Hyper-V SynIC tracepoints
kvm/x86: Update SynIC timers on guest entry only
kvm/x86: Skip SynIC vector check for QEMU side
kvm/x86: Hyper-V fix SynIC timer disabling condition
kvm/x86: Reorg stimer_expiration() to better control timer restart
kvm/x86: Hyper-V unify stimer_start() and stimer_restart()
kvm/x86: Drop stimer_stop() function
kvm/x86: Hyper-V timers fix incorrect logical operation
KVM: move architecture-dependent requests to arch/
KVM: renumber vcpu->request bits
KVM: document which architecture uses each request bit
KVM: Remove unused KVM_REQ_KICK to save a bit in vcpu->requests
kvm: x86: Check kvm_write_guest return value in kvm_write_wall_clock
KVM: s390: implement the RI support of guest
kvm/s390: drop unpaired smp_mb
kvm: x86: fix comment about {mmu,nested_mmu}.gva_to_gpa
KVM: x86: MMU: Use clear_page() instead of init_shadow_page_table()
arm/arm64: KVM: Detect vGIC presence at runtime
...
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Linus Torvalds
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c9bed1cf51 |
xen: features and fixes for 4.5-rc0
- Stolen ticks and PV wallclock support for arm/arm64. - Add grant copy ioctl to gntdev device. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQEcBAABAgAGBQJWk5IUAAoJEFxbo/MsZsTRLxwH/1BDcrbQDRc5hxUOG9JEYSUt H/lMjvZRShPkzweijdNon95ywAXhcSbkS9IV2Mp0+CZV7VyeymW7QIW/g4+G6iRg +LnoV77PAhPv/cmsr1pENXqRCclvemlxQOf7UyWLezuKhB71LC+oNaEnpk/tPIZS et/qef+m/SgSP5R91nO0Esv2KfP7za0UrgJf3Ee4GzjSeDkya0Hko06Cy3yc1/RT 082kHpQ1/KFcHHh2qhdCQwyzhq/cwFkuDA6ksKYJoxC6YAVC2mvvkuIOZYbloHDL c/dzuP9qjjxOZ7Gblv2cmg+RE4UqRfBhxmMycxSCcwW/Mt5LaftCpAxpBQKq2/8= =6F/q -----END PGP SIGNATURE----- Merge tag 'for-linus-4.5-rc0-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip Pull xen updates from David Vrabel: "Xen features and fixes for 4.5-rc0: - Stolen ticks and PV wallclock support for arm/arm64 - Add grant copy ioctl to gntdev device" * tag 'for-linus-4.5-rc0-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip: xen/gntdev: add ioctl for grant copy x86/xen: don't reset vcpu_info on a cancelled suspend xen/gntdev: constify mmu_notifier_ops structures xen/grant-table: constify gnttab_ops structure xen/time: use READ_ONCE xen/x86: convert remaining timespec to timespec64 in xen_pvclock_gtod_notify xen/x86: support XENPF_settime64 xen/arm: set the system time in Xen via the XENPF_settime64 hypercall xen/arm: introduce xen_read_wallclock arm: extend pvclock_wall_clock with sec_hi xen: introduce XENPF_settime64 xen/arm: introduce HYPERVISOR_platform_op on arm and arm64 xen: rename dom0_op to platform_op xen/arm: account for stolen ticks arm64: introduce CONFIG_PARAVIRT, PARAVIRT_TIME_ACCOUNTING and pv_time_ops arm: introduce CONFIG_PARAVIRT, PARAVIRT_TIME_ACCOUNTING and pv_time_ops missing include asm/paravirt.h in cputime.c xen: move xen_setup_runstate_info and get_runstate_snapshot to drivers/xen/time.c |
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Michael S. Tsirkin
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1638fb7207 |
x86: define __smp_xxx
This defines __smp_xxx barriers for x86, for use by virtualization. smp_xxx barriers are removed as they are defined correctly by asm-generic/barriers.h Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Acked-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org> Reviewed-by: Thomas Gleixner <tglx@linutronix.de> |
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Michael S. Tsirkin
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300b06d455 |
x86: reuse asm-generic/barrier.h
As on most architectures, on x86 read_barrier_depends and smp_read_barrier_depends are empty. Drop the local definitions and pull the generic ones from asm-generic/barrier.h instead: they are identical. This is in preparation to refactoring this code area. Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Acked-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org> Reviewed-by: Thomas Gleixner <tglx@linutronix.de> |
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Rusty Russell
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e27d90e8be |
lguest: Map switcher text R/O
Pavel noted that lguest maps the switcher code executable and read-write. This is a bad idea for any kernel text, but particularly for text mapped at a fixed address. Create two vmas, one for the text (PAGE_KERNEL_RX) and another for the stacks (PAGE_KERNEL). Use VM_NO_GUARD to map them adjacent (as expected by the rest of the code). Reported-by: Pavel Machek <pavel@ucw.cz> Tested-by: Pavel Machek <pavel@ucw.cz> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> Cc: Andy Lutomirski <luto@amacapital.net> Cc: Borislav Petkov <bp@alien8.de> Cc: Brian Gerst <brgerst@gmail.com> Cc: Denys Vlasenko <dvlasenk@redhat.com> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Ingo Molnar <mingo@kernel.org> |
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yu-cheng yu
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394db20ca2 |
x86/fpu: Disable AVX when eagerfpu is off
When "eagerfpu=off" is given as a command-line input, the kernel should disable AVX support. The Task Switched bit used for lazy context switching does not support AVX. If AVX is enabled without eagerfpu context switching, one task's AVX state could become corrupted or leak to other tasks. This is a bug and has bad security implications. This only affects systems that have AVX/AVX2/AVX512 and this issue will be found only when one actually uses AVX/AVX2/AVX512 _AND_ does eagerfpu=off. Reference: Intel Software Developer's Manual Vol. 3A Sec. 2.5 Control Registers: TS Task Switched bit (bit 3 of CR0) -- Allows the saving of the x87 FPU/ MMX/SSE/SSE2/SSE3/SSSE3/SSE4 context on a task switch to be delayed until an x87 FPU/MMX/SSE/SSE2/SSE3/SSSE3/SSE4 instruction is actually executed by the new task. Sec. 13.4.1 Using the TS Flag to Control the Saving of the X87 FPU and SSE State When the TS flag is set, the processor monitors the instruction stream for x87 FPU, MMX, SSE instructions. When the processor detects one of these instructions, it raises a device-not-available exeception (#NM) prior to executing the instruction. Signed-off-by: Yu-cheng Yu <yu-cheng.yu@intel.com> Cc: Andy Lutomirski <luto@amacapital.net> Cc: Borislav Petkov <bp@alien8.de> Cc: Borislav Petkov <bp@suse.de> Cc: Dave Hansen <dave.hansen@linux.intel.com> Cc: Fenghua Yu <fenghua.yu@intel.com> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Oleg Nesterov <oleg@redhat.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Quentin Casasnovas <quentin.casasnovas@oracle.com> Cc: Ravi V. Shankar <ravi.v.shankar@intel.com> Cc: Sai Praneeth Prakhya <sai.praneeth.prakhya@intel.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: yu-cheng yu <yu-cheng.yu@intel.com> Link: http://lkml.kernel.org/r/1452119094-7252-5-git-send-email-yu-cheng.yu@intel.com Signed-off-by: Ingo Molnar <mingo@kernel.org> |
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yu-cheng yu
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a5fe93a549 |
x86/fpu: Disable MPX when eagerfpu is off
This issue is a fallout from the command-line parsing move. When "eagerfpu=off" is given as a command-line input, the kernel should disable MPX support. The decision for turning off MPX was made in fpu__init_system_ctx_switch(), which is after the selection of the XSAVE format. This patch fixes it by getting that decision done earlier in fpu__init_system_xstate(). Signed-off-by: Yu-cheng Yu <yu-cheng.yu@intel.com> Cc: Andy Lutomirski <luto@amacapital.net> Cc: Borislav Petkov <bp@alien8.de> Cc: Borislav Petkov <bp@suse.de> Cc: Dave Hansen <dave.hansen@linux.intel.com> Cc: Fenghua Yu <fenghua.yu@intel.com> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Oleg Nesterov <oleg@redhat.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Quentin Casasnovas <quentin.casasnovas@oracle.com> Cc: Ravi V. Shankar <ravi.v.shankar@intel.com> Cc: Sai Praneeth Prakhya <sai.praneeth.prakhya@intel.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: yu-cheng yu <yu-cheng.yu@intel.com> Link: http://lkml.kernel.org/r/1452119094-7252-4-git-send-email-yu-cheng.yu@intel.com Signed-off-by: Ingo Molnar <mingo@kernel.org> |
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Ingo Molnar
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c0c57019a6 |
Merge commit 'linus' into x86/urgent, to pick up recent x86 changes
Signed-off-by: Ingo Molnar <mingo@kernel.org> |
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Linus Torvalds
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ae8a52185e |
Merge branch 'x86-platform-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 platform updates from Ingo Molnar:
"Two changes:
- one to quirk-save/restore certain system MSRs across
suspend/resume, to make certain Intel systems work better
(Chen Yu)
- and also to constify a read only structure (Julia Lawall)"
* 'x86-platform-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/platform/calgary: Constify cal_chipset_ops structures
x86/pm: Introduce quirk framework to save/restore extra MSR registers around suspend/resume
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Linus Torvalds
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6896d9f7e7 |
Merge branch 'x86-fpu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 fpu updates from Ingo Molnar: "This cleans up the FPU fault handling methods to be more robust, and moves eligible variables to .init.data" * 'x86-fpu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/fpu: Put a few variables in .init.data x86/fpu: Get rid of xstate_fault() x86/fpu: Add an XSTATE_OP() macro |
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Linus Torvalds
|
671d5532aa |
Merge branch 'x86-cpu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 cpu updates from Ingo Molnar:
"The main changes in this cycle were:
- Improved CPU ID handling code and related enhancements (Borislav
Petkov)
- RDRAND fix (Len Brown)"
* 'x86-cpu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86: Replace RDRAND forced-reseed with simple sanity check
x86/MSR: Chop off lower 32-bit value
x86/cpu: Fix MSR value truncation issue
x86/cpu/amd, kvm: Satisfy guest kernel reads of IC_CFG MSR
kvm: Add accessors for guest CPU's family, model, stepping
x86/cpu: Unify CPU family, model, stepping calculation
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Linus Torvalds
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67c707e451 |
Merge branch 'x86-cleanups-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 cleanups from Ingo Molnar: "The main changes in this cycle were: - code patching and cpu_has cleanups (Borislav Petkov) - paravirt cleanups (Juergen Gross) - TSC cleanup (Thomas Gleixner) - ptrace cleanup (Chen Gang)" * 'x86-cleanups-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: arch/x86/kernel/ptrace.c: Remove unused arg_offs_table x86/mm: Align macro defines x86/cpu: Provide a config option to disable static_cpu_has x86/cpufeature: Remove unused and seldomly used cpu_has_xx macros x86/cpufeature: Cleanup get_cpu_cap() x86/cpufeature: Move some of the scattered feature bits to x86_capability x86/paravirt: Remove paravirt ops pmd_update[_defer] and pte_update_defer x86/paravirt: Remove unused pv_apic_ops structure x86/tsc: Remove unused tsc_pre_init() hook x86: Remove unused function cpu_has_ht_siblings() x86/paravirt: Kill some unused patching functions |