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(parent: 376cf6e) | patch
x86: Detect CPUID support early at boot
authorBorislav Petkov <bp@suse.de>
Mon, 11 Feb 2013 14:22:16 +0000 (15:22 +0100)
committerH. Peter Anvin <hpa@linux.intel.com>
Tue, 12 Feb 2013 23:48:41 +0000 (15:48 -0800)
commitfe5ba70f2709070d2b702ba2e54279317b912c46
treedc6edbb3b3e7922a1975f2242dca373bbea248eatree | snapshot
parent376cf6e35cdcbe4a739538c4f107067c599d905dcommit | diff
x86: Detect CPUID support early at boot

We detect CPUID function support on each CPU and save it for later use,
obviating the need to play the toggle EFLAGS.ID game every time. C code
is looking at ->cpuid_level anyway.

Signed-off-by: Borislav Petkov <bp@suse.de>
Link: http://lkml.kernel.org/r/1360592538-10643-3-git-send-email-bp@alien8.de
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
arch/x86/kernel/head_32.S diff | blob | history
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