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Suresh Siddha ed40595805 x86, xsave: clear the user buffer before doing fxsave/xsave 
fxsave/xsave instructions will not touch all the bytes in the
fxsave/xsave frame. Clear the user buffer before doing fxsave/xsave
directly to user buffer during the sigcontext setup.

This is essentially needed in the context of xsave(for example,
some of the fields in the xsave header are not touched by the xsave
and defined as must be zero).

This will also present uniform and clean context to the user (from
which user can safely do fxrstor/xrstor).

Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-08-14 10:56:06 +02:00
..
boot Merge branch 'linus' into x86/header-guards 2008-07-26 15:30:40 +02:00
configs Subject: devmem, x86: fix rename of CONFIG_NONPROMISC_DEVMEM 2008-07-20 08:35:55 +02:00
crypto [CRYPTO] aes-x86-32: Remove unused return code 2008-04-21 10:19:21 +08:00
es7000 x86: mach_es7000 to es7000 2008-07-26 16:31:34 +02:00
ia32 x86, xsave: save/restore the extended state context in sigframe 2008-07-30 19:49:27 +02:00
kernel x86, xsave: clear the user buffer before doing fxsave/xsave 2008-08-14 10:56:06 +02:00
kvm KVM: Advertise synchronized mmu support to userspace 2008-07-29 12:34:02 +03:00
lguest Merge commit 'v2.6.27-rc1' into x86/core 2008-07-30 19:33:48 +02:00
lib x86: wrong register was used in align macro 2008-07-30 10:10:39 -07:00
mach-default x86: add ->pre_time_init to x86_quirks 2008-07-20 09:25:52 +02:00
mach-generic x86: mach-numaq to numaq 2008-07-26 16:31:35 +02:00
mach-rdc321x
mach-voyager Merge branch 'generic-ipi' into generic-ipi-for-linus 2008-07-15 21:55:59 +02:00
math-emu x86: coding style fixes to arch/x86/math-emu/reg_constant 2008-06-18 15:00:13 +02:00
mm Merge git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux-2.6-for-linus 2008-08-12 08:40:19 -07:00
oprofile x86/oprofile/nmi_int: add Nehalem to list of ppro cores 2008-07-24 17:29:00 -07:00
pci x86/PCI: use dev_printk when possible 2008-07-28 15:32:26 -07:00
power x86: remove end_pfn in 64bit 2008-07-08 13:10:38 +02:00
vdso Merge branches 'x86/urgent', 'x86/amd-iommu', 'x86/apic', 'x86/cleanups', 'x86/core', 'x86/cpu', 'x86/fixmap', 'x86/gart', 'x86/kprobes', 'x86/memtest', 'x86/modules', 'x86/nmi', 'x86/pat', 'x86/reboot', 'x86/setup', 'x86/step', 'x86/unify-pci', 'x86/uv', 'x86/xen' and 'xen-64bit' into x86/for-linus 2008-07-21 16:37:17 +02:00
video x86: video/fbdev.c: add MODULE_LICENSE 2008-05-04 20:04:46 +02:00
xen Merge branch 'linus' into x86/x2apic 2008-07-25 13:08:16 +02:00
Kconfig Merge commit 'v2.6.27-rc3' into x86/xsave 2008-08-14 10:55:26 +02:00
Kconfig.cpu x86: fix crash due to missing debugctlmsr on AMD K6-3 2008-07-22 14:16:37 +02:00
Kconfig.debug x86: Fix help message for STRICT_DEVMEM config option 2008-07-21 13:04:08 -07:00
Makefile x86, RDC321x: add to mach-default 2008-07-26 13:51:46 +02:00
Makefile_32.cpu