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authorH. Peter Anvin <hpa@zytor.com>2010-05-11 17:47:07 -0700
committerH. Peter Anvin <hpa@zytor.com>2010-05-11 17:47:07 -0700
commita3c8acd04376d604370dcb6cd2143c9c14078a50 (patch)
treec6d467d1007ab51fd17b88a37db79d583bac7033 /arch/x86/math-emu/fpu_system.h
parentdce8bf4e115aa44d590802ce3554e926840c9042 (diff)
downloadlinux-2.6.34-ux500-a3c8acd04376d604370dcb6cd2143c9c14078a50.tar.gz
x86: Add new static_cpu_has() function using alternatives
For CPU-feature-specific code that touches performance-critical paths, introduce a static patching version of [boot_]cpu_has(). This is run at alternatives time and is therefore not appropriate for most initialization code, but on the other hand initialization code is generally not performance critical. On gcc 4.5+ this uses the new "asm goto" feature. 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/math-emu/fpu_system.h')
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