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| author | H. Peter Anvin <hpa@zytor.com> | 2010-05-12 02:49:54 +0200 |
|---|---|---|
| committer | H. Peter Anvin <hpa@zytor.com> | 2010-05-12 02:49:54 +0200 |
| commit | c9775b4cc522e5f1b40b1366a993f0f05f600f39 (patch) | |
| tree | cb71944e93760f594476990c91a7f86e2b702643 /arch/x86/include/asm/i387.h | |
| parent | x86: Add new static_cpu_has() function using alternatives (diff) | |
| download | linux-c9775b4cc522e5f1b40b1366a993f0f05f600f39.tar.xz linux-c9775b4cc522e5f1b40b1366a993f0f05f600f39.zip | |
x86, fpu: Use static_cpu_has() to implement use_xsave()
use_xsave() is now just a special case of static_cpu_has(), so use
static_cpu_has().
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Cc: Avi Kivity <avi@redhat.com>
Cc: Suresh Siddha <suresh.b.siddha@intel.com>
LKML-Reference: <1273135546-29690-2-git-send-email-avi@redhat.com>
Diffstat (limited to 'arch/x86/include/asm/i387.h')
| -rw-r--r-- | arch/x86/include/asm/i387.h | 12 |
1 files changed, 3 insertions, 9 deletions
diff --git a/arch/x86/include/asm/i387.h b/arch/x86/include/asm/i387.h index 8002e9ce25fc..c991b3a7b904 100644 --- a/arch/x86/include/asm/i387.h +++ b/arch/x86/include/asm/i387.h @@ -18,6 +18,7 @@ #include <linux/hardirq.h> #include <linux/slab.h> #include <asm/asm.h> +#include <asm/cpufeature.h> #include <asm/processor.h> #include <asm/sigcontext.h> #include <asm/user.h> @@ -57,16 +58,9 @@ extern int restore_i387_xstate_ia32(void __user *buf); #define X87_FSW_ES (1 << 7) /* Exception Summary */ -static inline bool use_xsave(void) +static __always_inline __pure bool use_xsave(void) { - u8 has_xsave; - - alternative_io("mov $0, %0", - "mov $1, %0", - X86_FEATURE_XSAVE, - "=qm" (has_xsave)); - - return has_xsave; + return static_cpu_has(X86_FEATURE_XSAVE); } #ifdef CONFIG_X86_64 |