diff options
| author | Fenghua Yu <fenghua.yu@intel.com> | 2014-05-29 11:12:39 -0700 |
|---|---|---|
| committer | H. Peter Anvin <hpa@linux.intel.com> | 2014-05-29 14:33:00 -0700 |
| commit | 21e726c4a3625a1038e97795b7aad97109ba7e19 (patch) | |
| tree | 39430082d051d6c96b099a9fbf38396c6f7384c9 /arch/x86/kernel/i387.c | |
| parent | facbf4d91ae64f84ef93a00e4037135cd9f4b2ab (diff) | |
x86/xsaves: Clear reserved bits in xsave header
The reserved bits (128~511) in the xsave header must be zero according to
X86 SDM. Clear the bits in this patch.
Signed-off-by: Fenghua Yu <fenghua.yu@intel.com>
Link: http://lkml.kernel.org/r/1401387164-43416-12-git-send-email-fenghua.yu@intel.com
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
Diffstat (limited to 'arch/x86/kernel/i387.c')
| -rw-r--r-- | arch/x86/kernel/i387.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/x86/kernel/i387.c b/arch/x86/kernel/i387.c index d5dd80814419..a9a4229f6161 100644 --- a/arch/x86/kernel/i387.c +++ b/arch/x86/kernel/i387.c @@ -375,7 +375,7 @@ int xstateregs_set(struct task_struct *target, const struct user_regset *regset, /* * These bits must be zero. */ - xsave_hdr->reserved1[0] = xsave_hdr->reserved1[1] = 0; + memset(xsave_hdr->reserved, 0, 48); return ret; } |