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PR/49150 CVS commit: [netbsd-7] src/sys/arch/x86/x86

The following reply was made to PR port-amd64/49150; it has been noted by GNATS.

From: "Martin Husemann" <>
Subject: PR/49150 CVS commit: [netbsd-7] src/sys/arch/x86/x86
Date: Thu, 30 Oct 2014 18:58:45 +0000

 Module Name:	src
 Committed By:	martin
 Date:		Thu Oct 30 18:58:45 UTC 2014
 Modified Files:
 	src/sys/arch/x86/x86 [netbsd-7]: identcpu.c
 Log Message:
 Pull up following revision(s) (requested by riz in ticket #171):
 	sys/arch/x86/x86/identcpu.c: revision 1.46
 	sys/arch/x86/x86/identcpu.c: revision 1.47
 Force x86_xsave_features to 0 when running under XEN.
 This prevents the use of xsave and xrstor thus fixing
 the problem in PR/49150.  The basic problem is that the way AMD
 implements those instructions means that information can leak
 between domains so XEN treats them as privileged.
 To generate a diff of this commit:
 cvs rdiff -u -r1.45 -r1.45.2.1 src/sys/arch/x86/x86/identcpu.c
 Please note that diffs are not public domain; they are subject to the
 copyright notices on the relevant files.

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