Commit-ID: a8615af4bc3621cb01096541dafa6f68352ec2d9
Gitweb: http://git.kernel.org/tip/a8615af4bc3621cb01096541dafa6f68352ec2d9
Author: Suresh Siddha <suresh.b.siddha@xxxxxxxxx>
AuthorDate: Mon, 10 Sep 2012 10:40:08 -0700
Committer: H. Peter Anvin <hpa@xxxxxxxxxxxxxxx>
CommitDate: Tue, 18 Sep 2012 15:52:24 -0700
x86, fpu: remove cpu_has_xmm check in the fx_finit()
CPUs with FXSAVE but no XMM/MXCSR (Pentium II from Intel,
Crusoe/TM-3xxx/5xxx from Transmeta, and presumably some of the K6
generation from AMD) ever looked at the mxcsr field during
fxrstor/fxsave. So remove the cpu_has_xmm check in the fx_finit()
Reported-by: Al Viro <viro@xxxxxxxxxxxxxxxxxx>
Acked-by: H. Peter Anvin <hpa@xxxxxxxxx>
Signed-off-by: Suresh Siddha <suresh.b.siddha@xxxxxxxxx>
Link: http://lkml.kernel.org/r/1347300665-6209-6-git-send-email-suresh.b.siddha@xxxxxxxxx
Signed-off-by: H. Peter Anvin <hpa@xxxxxxxxxxxxxxx>
---
arch/x86/include/asm/fpu-internal.h | 3 +--
1 files changed, 1 insertions(+), 2 deletions(-)
diff --git a/arch/x86/include/asm/fpu-internal.h b/arch/x86/include/asm/fpu-internal.h
index 0ca72f0..92f3c6e 100644
--- a/arch/x86/include/asm/fpu-internal.h
+++ b/arch/x86/include/asm/fpu-internal.h
@@ -109,8 +109,7 @@ static inline void fx_finit(struct i387_fxsave_struct *fx)
{
memset(fx, 0, xstate_size);
fx->cwd = 0x37f;
- if (cpu_has_xmm)
- fx->mxcsr = MXCSR_DEFAULT;
+ fx->mxcsr = MXCSR_DEFAULT;
}
extern void __sanitize_i387_state(struct task_struct *);
--
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