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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" <martin%netbsd.org@localhost>
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
src/sys/arch/x86/x86 [netbsd-7]: identcpu.c
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 -r188.8.131.52 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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