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cpu_map: Add TAA_NO bit for IA32_ARCH_CAPABILITIES MSR

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CVE-2019-11135

CPUs with TAA_NO bit of IA32_ARCH_CAPABILITIES MSR set to 1 are not
vulnerable to TSX Asynchronous Abort and passing this bit to a guest
may avoid unnecessary mitigations.

Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
This commit is contained in:
Jiri Denemark 2019-12-12 15:12:05 +01:00
parent 9851a0f390
commit 07aaced4e6
1 changed files with 3 additions and 0 deletions
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3
src/cpu_map/x86_features.xml
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@ -502,4 +502,7 @@
<feature name='mds-no'>
<msr index='0x10a' edx='0x00000000' eax='0x00000020'/>
</feature>
<feature name='taa-no'>
<msr index='0x10a' edx='0x00000000' eax='0x00000100'/>
</feature>
</cpus>