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authorDaniel P. Berrangé2019-05-15 16:10:11 +0200
committerEduardo Habkost2019-05-21 20:39:05 +0200
commit2c7e82a30774730100da9dbe68d2360459030d91 (patch)
tree5fe04d7250a9597b9e2fe0555a600769424cb753 /docs/qemu-cpu-models.texi
parenttarget/i386: define md-clear bit (diff)
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docs: recommend use of md-clear feature on all Intel CPUs
Update x86 CPU model guidance to recommend that the md-clear feature is manually enabled with all Intel CPU models, when supported by the host microcode. Signed-off-by: Daniel P. Berrangé <berrange@redhat.com> Message-Id: <20190515141011.5315-3-berrange@redhat.com> Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Diffstat (limited to 'docs/qemu-cpu-models.texi')
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diff --git a/docs/qemu-cpu-models.texi b/docs/qemu-cpu-models.texi
index 23c11dc86f..ad040cfc98 100644
--- a/docs/qemu-cpu-models.texi
+++ b/docs/qemu-cpu-models.texi
@@ -200,6 +200,18 @@ Not included by default in any Intel CPU model.
Should be explicitly turned on for all Intel CPU models.
Note that not all CPU hardware will support this feature.
+
+@item @code{md-clear}
+
+Required to confirm the MDS (CVE-2018-12126, CVE-2018-12127, CVE-2018-12130,
+CVE-2019-11091) fixes.
+
+Not included by default in any Intel CPU model.
+
+Must be explicitly turned on for all Intel CPU models.
+
+Requires the host CPU microcode to support this feature before it
+can be used for guest CPUs.
@end table