x86/xsaves: Enable xsaves/xrstors

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If xsaves/xrstors is enabled, compacted format of xsave area will be used
and less memory may be used for context per process. And modified
optimization implemented in xsaves/xrstors improves performance of saving
xstate.

Signed-off-by: Fenghua Yu <fenghua.yu@intel.com>
Link: http://lkml.kernel.org/r/1401387164-43416-16-git-send-email-fenghua.yu@intel.com
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>

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Fenghua Yu 2014-05-29 11:12:43 -07:00 • committed by H. Peter Anvin

parent 47c2f292cc

commit 7e7ce87f6a

1 changed files with 33 additions and 6 deletions

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39

arch/x86/kernel/xsave.c

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