Messages in this thread Patch in this message | | | From | Suresh Siddha <> | Subject | [PATCH v2 5/5] x86, fpu: remove cpu_has_xmm check in the fx_finit() | Date | Mon, 10 Sep 2012 11:11:05 -0700 |
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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@zeniv.linux.org.uk> Acked-by: H. Peter Anvin <hpa@zytor.com> Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com> --- 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 df023b4..9fa1a0e 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 *); -- 1.7.6.5
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