From: H. Peter Anvin <hpa@zytor.com>
Date: Wed, 12 May 2010 00:47:07 +0000 (-0700)
Subject: x86: Add new static_cpu_has() function using alternatives
X-Git-Tag: v2.6.35-rc1~514^2~1
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=a3c8acd04376d604370dcb6cd2143c9c14078a50;p=pandora-kernel.git

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>
---

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