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92d140e21f
linux/arch/x86
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Siddha, Suresh B 92d140e21f x86: fix taking DNA during 64bit sigreturn 
restore sigcontext is taking a DNA exception while restoring FP context
from the user stack, during the sigreturn.  Appended patch fixes it by
doing clts() if the app doesn't touch FP during the signal handler
execution.  This will stop generating a DNA, during the fxrstor in the
sigreturn.

This improves 64-bit lat_sig numbers by ~30% on my core2 platform.

Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-11-12 11:09:33 -08:00
..
boot x86 setup: set %ebx == %ebp == %edi == 0 on protected mode entry 2007-11-04 19:48:04 -08:00
configs x86 gart: rename CONFIG_IOMMU to CONFIG_GART_IOMMU 2007-10-30 00:22:22 +01:00
crypto x86: merge arch/x86/crypto Makefiles 2007-10-23 22:37:23 +02:00
ia32 x86 - 32-bit ptrace emulation mishandles 6th arg 2007-11-10 04:30:36 +01:00
kernel x86: fix taking DNA during 64bit sigreturn 2007-11-12 11:09:33 -08:00
lguest lguest: tidy up documentation 2007-11-05 21:55:57 +11:00
lib Merge ssh://master.kernel.org/pub/scm/linux/kernel/git/tglx/linux-2.6-x86 2007-10-19 15:06:00 -07:00
mach-default spelling fixes: arch/i386/ 2007-10-20 01:13:56 +02:00
mach-es7000 i386: es7000 minor cleanups 2007-10-17 20:16:15 +02:00
mach-generic spelling fixes: arch/i386/ 2007-10-20 01:13:56 +02:00
mach-visws [x86] remove uses of magic macros for boot_params access 2007-10-16 17:38:31 -07:00
mach-voyager x86: voyager: fix bogus conversion to per_cpu for boot_cpu_info 2007-10-27 20:57:43 +02:00
math-emu kbuild: fix up CFLAGS usage 2007-10-14 21:49:42 +02:00
mm Merge branch 'v2.6.24-rc1-lockdep' of git://git.kernel.org/pub/scm/linux/kernel/git/peterz/linux-2.6-lockdep 2007-11-03 12:42:52 -07:00
oprofile x86: add instrumentation menu 2007-10-23 22:37:22 +02:00
pci spelling fixes: arch/i386/ 2007-10-20 01:13:56 +02:00
power i386: move power 2007-10-11 11:16:34 +02:00
vdso x86: vdso linker script cleanup 2007-10-17 20:17:06 +02:00
video i386: move video 2007-10-11 11:16:56 +02:00
xen [SPARC, XEN, NET/CXGB3] use irq_handler_t where appropriate 2007-10-23 19:53:17 -04:00
Kconfig.cpu x86: move i386 and x86_64 Kconfig files to x86 directory 2007-10-25 22:37:02 +02:00
Kconfig.debug remove the dead X86_REMOTE_DEBUG option 2007-10-30 00:22:22 +01:00
Kconfig.i386 x86: move i386 and x86_64 Kconfig files to x86 directory 2007-10-25 22:37:02 +02:00
Kconfig.x86_64 Remove bogus default y for DMAR and NET_DMA 2007-10-30 08:06:55 -07:00
Makefile x86: move defconfig files for i386 and x86_64 to x86 2007-10-25 22:27:41 +02:00
Makefile_32 x86: move i386 and x86_64 Makefiles to arch/x86 2007-10-25 22:27:34 +02:00
Makefile_32.cpu x86: move i386 and x86_64 Makefiles to arch/x86 2007-10-25 22:27:34 +02:00
Makefile_64 x86: move i386 and x86_64 Makefiles to arch/x86 2007-10-25 22:27:34 +02:00