| From | Ingo Molnar <> | Subject | [PATCH 100/208] x86/fpu: Move CPU capability check into fpu__init_cpu_xstate() | Date | Tue, 5 May 2015 19:49:52 +0200 |
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fpu__init_system_xstate() does an FPU capability check that is better done in fpu__init_cpu_xstate(). This will allow us to call fpu__init_cpu_xstate() directly on legacy CPUs as well.
Reviewed-by: Borislav Petkov <bp@alien8.de> Cc: Andy Lutomirski <luto@amacapital.net> Cc: Dave Hansen <dave.hansen@linux.intel.com> Cc: Fenghua Yu <fenghua.yu@intel.com> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Oleg Nesterov <oleg@redhat.com> Cc: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Ingo Molnar <mingo@kernel.org> --- arch/x86/kernel/fpu/xsave.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/x86/kernel/fpu/xsave.c b/arch/x86/kernel/fpu/xsave.c index 961c25850c7f..0610f431f77f 100644 --- a/arch/x86/kernel/fpu/xsave.c +++ b/arch/x86/kernel/fpu/xsave.c @@ -465,7 +465,7 @@ static void prepare_fx_sw_frame(void) */ void fpu__init_cpu_xstate(void) { - if (!xfeatures_mask) + if (!cpu_has_xsave || !xfeatures_mask) return; cr4_set_bits(X86_CR4_OSXSAVE); -- 2.1.0
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