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authorH. Peter Anvin <hpa@zytor.com>2010-05-11 17:49:54 -0700
committerH. Peter Anvin <hpa@zytor.com>2010-05-11 17:49:54 -0700
commitc9775b4cc522e5f1b40b1366a993f0f05f600f39 (patch)
treecb71944e93760f594476990c91a7f86e2b702643 /arch/x86
parenta3c8acd04376d604370dcb6cd2143c9c14078a50 (diff)
downloadlinux-2.6.34-ux500-c9775b4cc522e5f1b40b1366a993f0f05f600f39.tar.gz
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')
-rw-r--r--arch/x86/include/asm/i387.h12
1 files changed, 3 insertions, 9 deletions
diff --git a/arch/x86/include/asm/i387.h b/arch/x86/include/asm/i387.h
index 8002e9ce25f..c991b3a7b90 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