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cpu_map: Define md-clear CPUID bit

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CVE-2018-12126, CVE-2018-12127, CVE-2018-12130, CVE-2019-11091

The bit is set when microcode provides the mechanism to invoke a flush
of various exploitable CPU buffers by invoking the VERW instruction.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
This commit is contained in:
Jiri Denemark
2019-04-05 15:11:20 +02:00
parent 5cd9db3ac1
commit 538d873571
7 changed files with 9 additions and 1 deletions
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1
tests/cputestdata/x86_64-cpuid-Xeon-Platinum-8268-guest.xml
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@@ -23,6 +23,7 @@
<feature policy='require' name='intel-pt'/>
<feature policy='require' name='pku'/>
<feature policy='require' name='ospke'/>
<feature policy='require' name='md-clear'/>
<feature policy='require' name='stibp'/>
<feature policy='require' name='arch-capabilities'/>
<feature policy='require' name='xsaves'/>