x86/xsaves: Enable xsaves/xrstors
x86/xsaves: Enable xsaves/xrstors

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 <94fe9a7ec8ff966c1952fe98e39b5ae3a7477695@intel.com>
Link: http://lkml.kernel.org/r/1401387164-43416-16-git-send-email-94fe9a7ec8ff966c1952fe98e39b5ae3a7477695@intel.com
Signed-off-by: H. Peter Anvin <8a453bad9912ffe59bc0f0b8abe03df9be19379e@linux.intel.com>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs