Commit Graph

141 Commits

Author SHA1 Message Date
Ingo Molnar bed4f13065 Merge branch 'x86/irq' into x86/core 2008-12-23 16:30:31 +01:00
Ingo Molnar 3e5621edb3 Merge branch 'x86/iommu' into x86/core 2008-12-23 16:30:27 +01:00
Ingo Molnar fa623d1b02 Merge branches 'x86/apic', 'x86/cleanups', 'x86/cpufeature', 'x86/crashdump', 'x86/debug', 'x86/defconfig', 'x86/detect-hyper', 'x86/doc', 'x86/dumpstack', 'x86/early-printk', 'x86/fpu', 'x86/idle', 'x86/io', 'x86/memory-corruption-check', 'x86/microcode', 'x86/mm', 'x86/mtrr', 'x86/nmi-watchdog', 'x86/pat2', 'x86/pci-ioapic-boot-irq-quirks', 'x86/ptrace', 'x86/quirks', 'x86/reboot', 'x86/setup-memory', 'x86/signal', 'x86/sparse-fixes', 'x86/time', 'x86/uv' and 'x86/xen' into x86/core 2008-12-23 16:27:23 +01:00
Ingo Molnar bf8bd66d05 Merge branch 'x86/apic' into x86/irq
Conflicts:
	arch/x86/kernel/apic.c
2008-12-23 16:24:15 +01:00
venkatesh.pallipadi@intel.com 34801ba9bf x86: PAT: move track untrack pfnmap stubs to asm-generic
Impact: Cleanup and branch hints only.

Move the track and untrack pfn stub routines from memory.c to asm-generic.
Also add unlikely to pfnmap related calls in fork and exit path.

Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2008-12-19 15:40:30 -08:00
venkatesh.pallipadi@intel.com 982d789ab7 x86: PAT: remove follow_pfnmap_pte in favor of follow_phys
Impact: Cleanup - removes a new function in favor of a recently modified older one.

Replace follow_pfnmap_pte in pat code with follow_phys. follow_phys lso
returns protection eliminating the need of pte_pgprot call. Using follow_phys
also eliminates the need for pte_pa.

Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2008-12-19 15:40:30 -08:00
Hiroshi Shimamoto 9f22149599 x86: ia32.h: remove unused struct sigfram32 and rt_sigframe32
Impact: cleanup

Remove struct sigfram32 and rt_sigframe32 because there is no user.

Signed-off-by: Hiroshi Shimamoto <h-shimamoto@ct.jp.nec.com>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2008-12-18 15:01:25 -08:00
Hiroshi Shimamoto b2fa739c06 x86: sigframe.h: include headers for dependency
Impact: cleanup

Include following headers for dependency.
asm/sigcontext.h
asm/siginfo.h
asm/ucontext.h

Signed-off-by: Hiroshi Shimamoto <h-shimamoto@ct.jp.nec.com>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2008-12-18 15:01:22 -08:00
Jaswinder Singh d1769d5475 x86: traps.c declare functions before they get used
Impact: cleanup

 In asm/traps.h :-
 do_double_fault : added under X86_64
 sync_regs : added under X86_64
 math_error : moved out from X86_32 as it is common for both 32 and 64 bit
 math_emulate : moved from X86_32 as it is common for both 32 and 64 bit
 smp_thermal_interrupt : added under X86_64
 mce_threshold_interrupt : added under X86_64

Signed-off-by: Jaswinder Singh <jaswinder@infradead.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-12-18 22:33:13 +01:00
venkatesh.pallipadi@intel.com 2520bd3123 x86: PAT: add pgprot_writecombine() interface for drivers - v3
Impact: New mm functionality.

Add pgprot_writecombine. pgprot_writecombine will be aliased to
pgprot_noncached when not supported by the architecture.

Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2008-12-18 13:30:16 -08:00
venkatesh.pallipadi@intel.com 8a7b12f70f x86: PAT: change pgprot_noncached to uc_minus instead of strong uc - v3
Impact: mm behavior change.

Make pgprot_noncached uc_minus instead of strong UC. This will make
pgprot_noncached to be in line with ioremap_nocache() and all the other
APIs that map page uc_minus on uc request.

Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2008-12-18 13:30:16 -08:00
venkatesh.pallipadi@intel.com 5899329b19 x86: PAT: implement track/untrack of pfnmap regions for x86 - v3
Impact: New mm functionality.

Hookup remap_pfn_range and vm_insert_pfn and corresponding copy and free
routines with reserve and free tracking.

reserve and free here only takes care of non RAM region mapping. For RAM
region, driver should use set_memory_[uc|wc|wb] to set the cache type and
then setup the mapping for user pte. We can bypass below
reserve/free in that case.

Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2008-12-18 13:30:16 -08:00
Hiroshi Shimamoto 5c2628e8b4 x86: sigframe.h: add guard macro
Impact: cleanup

Add missing guard macro _ASM_X86_SIGFRAME_H.

Signed-off-by: Hiroshi Shimamoto <h-shimamoto@ct.jp.nec.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-12-18 22:04:13 +01:00
Jaswinder Singh 7c9c160c54 x86: tls.c declare sys_set_thread_area and sys_get_thread_area before they get used
Impact: cleanup

In asm/syscalls.h move out sys_set_thread_area() and sys_get_thread_area()
as they are common for both 32 and 64 bit.

Signed-off-by: Jaswinder Singh <jaswinder@infradead.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-12-18 13:33:48 +01:00
Hiroshi Shimamoto c85c2ff877 x86: signal: prepare to include from ia32_signal.c
Impact: cleanup, prepare to use from ia32_signal.c

Make struct sigframe_ia32 and rt_sigframe_ia32 visible to ia32_signal.c.

Signed-off-by: Hiroshi Shimamoto <h-shimamoto@ct.jp.nec.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-12-18 11:28:55 +01:00
Hiroshi Shimamoto 41af86fad3 x86: signal: move sigframe.h to arch/x86/include/asm
Impact: cleanup, move header file

Move arch/x86/kernel/sigframe.h to arch/x86/include/asm/sigframe.h.
It will be used in arch/x86/ia32/ia32_signal.c.

Signed-off-by: Hiroshi Shimamoto <h-shimamoto@ct.jp.nec.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-12-18 11:28:54 +01:00
Russ Anderson c8182f0016 sgi-xp: xpc needs to pass the physical address, not virtual
Impact: fix crash

xpc needs to pass the physical address, not virtual.

Testing uncovered this problem.  The virtual address happens to work
most of the time due to the way bios was masking off the node bits.
Passing the physical address makes it work all of the time.

Signed-off-by: Russ Anderson <rja@sgi.com>
Acked-by: Dean Nelson <dcn@sgi.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-12-16 23:04:24 +01:00
Jack Steiner 189f67c440 x86: UV fix for global physical addresses
Impact: fix UV boot crash

This fixes a UV bug related to generating global memory addresses
on partitioned systems. Partition systems do not have physical memory
at address 0. Instead, a chunk of high memory is remapped by the chipset
so that it appears to be at address 0. This remapping is INVISIBLE to most
of the OS. The only OS functions that need to be aware of the remaping are
functions that directly interface to the chipset. The GRU is one example.

Also, delete a couple of unused macros related to global memory addresses.

Signed-off-by: Jack Steiner <steiner@sgi.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-12-16 22:54:03 +01:00
Ingo Molnar c15cb37cc4 Merge commit 'v2.6.28-rc8' into x86/uv 2008-12-16 22:53:53 +01:00
Ingo Molnar 78f902ccc5 Merge commit 'v2.6.28-rc8' into x86/doc 2008-12-16 22:04:48 +01:00
Jeremy Fitzhardinge ecbf29cdb3 xen: clean up asm/xen/hypervisor.h
Impact: cleanup

hypervisor.h had accumulated a lot of crud, including lots of spurious
#includes.  Clean it all up, and go around fixing up everything else
accordingly.

Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-12-16 21:50:31 +01:00
Jaswinder Singh c0195b6da0 x86: ldt.c declare sys_modify_ldt before they get used
Impact: cleanup

In asm/syscalls.h moved out sys_modify_ldt from CONFIG_X86_32 as it is
common for both 32 and 64 bit.

Signed-off-by: Jaswinder Singh <jaswinder@infradead.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-12-16 21:18:21 +01:00
Jaswinder Singh 7b5b50f1be x86: signal.c declare do_notify_resume before they get used
Impact: cleanup

In asm/signal.h moved out do_notify_resume from __i386__ as it is common
for both 32 and 64 bit.

Signed-off-by: Jaswinder Singh <jaswinder@infradead.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

 arch/x86/include/asm/signal.h |    6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)
2008-12-16 21:10:28 +01:00
Jaswinder Singh aab02f0ae2 x86: process_64.c declare __switch_to() and sys_arch_prctl before they get used
Impact: cleanup

In asm/system.h moved out __switch_to from CONFIG_X86_32 as it is common for
both 32 and 64 bit.

In asm/pctl.h defined sys_arch_prctl
Signed-off-by: Jaswinder Singh <jaswinder@infradead.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-12-16 21:10:27 +01:00
Ingo Molnar d437797406 x86: support always running TSC on Intel CPUs, add cpufeature definition
Impact: add new synthetic-cpuid bit definition

add X86_FEATURE_NONSTOP_TSC to the cpufeature bits - this is in
preparation of Venki's always-running-TSC patch.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-12-16 21:01:15 +01:00
Ingo Molnar dd7a5230cd Merge commit 'v2.6.28-rc8' into x86/cpufeature 2008-12-16 20:57:41 +01:00
Andreas Herrmann 29d0887ffd x86: microcode_amd: replace inline asm by common rdmsr/wrmsr functions
Impact: cleanup

Signed-off-by: Andreas Herrmann <andreas.herrmann3@amd.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-12-16 19:58:04 +01:00
Ingo Molnar b6fd6f2673 x86, mm: limit MAXMEM on 64-bit
on 64-bit x86 the physical memory limit is controlled by the sparsemem
bits - which are 44 bits right now. But MAXMEM (the max pfn number
e820 parsing will allow to enter our sizing routines) is set to
0x00003fffffffffff, i.e. 46 bits - that's too large because it overlaps
into the vmalloc range.

So couple MAXMEM to MAX_PHYSMEM_BITS, and add a comment that the
maximum of MAX_PHYSMEM_BITS is 45 bits.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-12-16 19:31:52 +01:00
Jan Beulich cfc319833b x86, 32-bit: improve lazy TLB handling code
Impact: micro-optimize the 32-bit TLB flush code

Use the faster x86_{read,write}_percpu() accessors here.

Signed-off-by: Jan Beulich <jbeulich@novell.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-12-16 18:47:17 +01:00
Jan Beulich b93a531e31 allow bug table entries to use relative pointers (and use it on x86-64)
Impact: reduce bug table size

This allows reducing the bug table size by half. Perhaps there are
other 64-bit architectures that could also make use of this.

Signed-off-by: Jan Beulich <jbeulich@novell.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-12-16 18:40:32 +01:00
Jan Beulich 1796316a8b x86: consolidate __swp_XXX() macros
Impact: cleanup, code robustization

The __swp_...() macros silently relied upon which bits are used for
_PAGE_FILE and _PAGE_PROTNONE. After having changed _PAGE_PROTNONE in
our Xen kernel to no longer overlap _PAGE_PAT, live locks and crashes
were reported that could have been avoided if these macros properly
used the symbolic constants. Since, as pointed out earlier, for Xen
Dom0 support mainline likewise will need to eliminate the conflict
between _PAGE_PAT and _PAGE_PROTNONE, this patch does all the necessary
adjustments, plus it introduces a mechanism to check consistency
between MAX_SWAPFILES_SHIFT and the actual encoding macros.

This also fixes a latent bug in that x86-64 used a 6-bit mask in
__swp_type(), and if MAX_SWAPFILES_SHIFT was increased beyond 5 in (the
seemingly unrelated) linux/swap.h, this would have resulted in a
collision with _PAGE_FILE.

Non-PAE 32-bit code gets similarly adjusted for its pte_to_pgoff() and
pgoff_to_pte() calculations.

Signed-off-by: Jan Beulich <jbeulich@novell.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-12-16 18:34:51 +01:00
Ken Chen 205516c12d x86: convert rdtscll() to use __native_read_tsc
Impact: micro-optimization

Is there any reason why x86 rdtscll have to use the out of line
function instead of inline __native_read_tsc()?  native_read_tsc and
__native_read_tsc is essentially the same functions.

Patch to let x86 rdtscll() to use the inline version of read_tsc.

Signed-off-by: Ken Chen <kenchen@google.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-12-16 10:17:02 +01:00
Zachary Amsden ae8d04e2ec x86 Fix VMI crash on boot in 2.6.28-rc8
VMI initialiation can relocate the fixmap, causing early_ioremap to
malfunction if it is initialized before the relocation.  To fix this,
VMI activation is split into two phases; the detection, which must
happen before setting up ioremap, and the activation, which must happen
after parsing early boot parameters.

This fixes a crash on boot when VMI is enabled under VMware.

Signed-off-by: Zachary Amsden <zach@vmware.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-12-14 16:24:38 -08:00
Hiroshi Shimamoto 915b0d0104 x86: hardirq: introduce inc_irq_stat()
Impact: cleanup

Introduce inc_irq_stat() macro and unify irq_stat accounting code.

Signed-off-by: Hiroshi Shimamoto <h-shimamoto@ct.jp.nec.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-12-12 11:59:49 +01:00
Ingo Molnar fd10902797 Merge commit 'v2.6.28-rc8' into x86/irq 2008-12-12 11:59:39 +01:00
Hiroshi Shimamoto 8f2466f45f x86: kill #ifdef for exit_idle()
Impact: cleanup

Introduce helper inline function in arch/x86/include/asm/idle.h
to remove #ifdefs around exit_idle().

Signed-off-by: Hiroshi Shimamoto <h-shimamoto@ct.jp.nec.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-12-12 11:58:36 +01:00
Hiroshi Shimamoto 16855f878d x86: uaccess: return value of __{get|put}_user() can be int
Impact: cleanup

The type of return value of __{get|put}_user() can be int.
There is no user to refer the return value of __{get|put}_user() as long.
This reduces code size a bit on 64-bit.

 $ size vmlinux.*
     text	   data	    bss	    dec	    hex	filename
  4509265	 479988	 673588	5662841	 566879	vmlinux.new
  4511462	 479988	 673588	5665038	 56710e	vmlinux.old

Signed-off-by: Hiroshi Shimamoto <h-shimamoto@ct.jp.nec.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-12-12 11:54:43 +01:00
Hiroshi Shimamoto 4217458daf x86: signal: change type of paramter for sys_rt_sigreturn()
Impact: cleanup on 32-bit

Peter pointed this parameter can be changed.

Signed-off-by: Hiroshi Shimamoto <h-shimamoto@ct.jp.nec.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-12-08 15:21:35 +01:00
Ingo Molnar aa9c9b8c58 Merge branch 'linus' into x86/quirks 2008-12-08 15:07:49 +01:00
Rafael J. Wysocki 3e1e9002aa x86: change static allocation of trampoline area
Impact: fix trampoline sizing bug, save space

While debugging a suspend-to-RAM related issue it occured to me that
if the trampoline code had grown past 4 KB, we would have been
allocating too little memory for it, since the 4 KB size of the
trampoline is hardcoded into arch/x86/kernel/e820.c .  Change that
by making the kernel compute the trampoline size and allocate as much
memory as necessary.

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-12-08 13:49:45 +01:00
Linus Torvalds e948990f95 Merge branch 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  x86: fix early panic with boot option "nosmp"
  x86/oprofile: fix Intel cpu family 6 detection
  oprofile: fix CPU unplug panic in ppro_stop()
  AMD IOMMU: fix possible race while accessing iommu->need_sync
  AMD IOMMU: set device table entry for aliased devices
  AMD IOMMU: struct amd_iommu remove padding on 64 bit
  x86: fix broken flushing in GART nofullflush path
  x86: fix dma_mapping_error for 32bit x86
2008-12-04 21:40:08 -08:00
Joe Korty affa219b60 x86: change thread_info's flag field back to 32 bits
Impact: pack struct thread_info more tightly

Change x86_64's thread_info 'flags' field back to __u32.

This was changed to 'unsigned long' when the thread_info*.h
for i386 and x86_64 were merged.  Change it back.  We can
do this as only 27 bits of 'flags' are actually used.

This change actually packs down thread_info by 64 bits:
32 bits are saved by the smaller flags, and 32 bits are
saved by the following 'mm_segment_t field' becoming
naturally 64-bit aligned.

Signed-off-by: Joe Korty <joe.korty@ccur.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-12-04 11:06:03 +01:00
Ingo Molnar c0515566f3 Merge commit 'v2.6.28-rc7' into x86/cleanups 2008-12-04 11:05:26 +01:00
Ingo Molnar c36910c147 Merge branch 'iommu-fixes-2.6.28' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/linux-2.6-iommu into x86/urgent 2008-12-03 12:54:45 +01:00
Richard Kennedy eac9fbc6a9 AMD IOMMU: struct amd_iommu remove padding on 64 bit
Remove 16 bytes of padding from struct amd_iommu on 64bit builds
reducing its size to 120 bytes, allowing it to span one fewer
cachelines.

Signed-off-by: Richard Kennedy <richard@rsk.demon.co.uk>
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2008-12-03 12:20:46 +01:00
FUJITA Tomonori 181de82ee3 x86: remove dead BIO_VMERGE_BOUNDARY definition
Impact: cleanup, remove dead code

The block layer dropped the virtual merge feature
(b8b3e16cfe).

BIO_VMERGE_BOUNDARY definition is meaningless now.

Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Acked-by: Jens Axboe <jens.axboe@oracle.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-12-03 08:26:40 +01:00
Ingo Molnar 6083aa485c Merge branch 'x86/io' into x86/iommu
Merge x86/io into x86/iommu due to a small patch conflict in io.h.
2008-12-03 08:25:59 +01:00
FUJITA Tomonori 50cec5c51c x86: fix dma_mapping_error for 32bit x86, cleanup
This removes ifdef CONFIG_X86_64 in dma_mapping_error():

1) Xen people plan to use swiotlb on X86_32 for Dom0 support. swiotlb
   uses ops->mapping_error so X86_32 also needs to check
   ops->mapping_error.

2) Removing #ifdef hack is almost always a good thing.

Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-12-01 20:36:17 +01:00
Ingo Molnar f6d2e6f57b Merge branch 'x86/urgent' into x86/iommu 2008-12-01 20:36:13 +01:00
Mahesh Salgaonkar 43714539ea sched: don't export sched_mc_power_savings in laptops
Impact: do not expose a control that has no effect

Fix to prevent sched_mc_power_saving from being exported through sysfs
on single-socket systems. (Say multicore single socket (Laptop))

CPU core map of the boot cpu should be equal to possible number
of cpus for single socket system.

This fix has been developed at FOSS.in kernel workout.

Signed-off-by: Mahesh Salgaonkar <mahesh@linux.vnet.ibm.com>
Acked-by: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-12-01 08:44:00 +01:00