28 lines
1022 B
Diff
28 lines
1022 B
Diff
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commit 1dbca2eccad58d91a5fd33962854f1a653638182
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Author: Daniel P. Berrangé <berrange@redhat.com>
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Date: Mon May 21 23:05:07 2018 +0100
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cpu: define the 'ssbd' CPUID feature bit (CVE-2018-3639)
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New microcode introduces the "Speculative Store Bypass Disable"
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CPUID feature bit. This needs to be exposed to guest OS to allow
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them to protect against CVE-2018-3639.
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Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
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Reviewed-by: Jiri Denemark <jdenemar@redhat.com>
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Index: libvirt-4.3.0/src/cpu/cpu_map.xml
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===================================================================
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--- libvirt-4.3.0.orig/src/cpu/cpu_map.xml
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+++ libvirt-4.3.0/src/cpu/cpu_map.xml
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@@ -298,6 +298,9 @@
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<feature name='spec-ctrl'>
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<cpuid eax_in='0x07' ecx_in='0x00' edx='0x04000000'/>
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</feature>
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+ <feature name='ssbd'>
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+ <cpuid eax_in='0x07' ecx_in='0x00' edx='0x80000000'/>
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+ </feature>
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<!-- Processor Extended State Enumeration sub leaf 1 -->
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<feature name='xsaveopt'>
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