External/libvirt
1
0
Fork 0
mirror of https://gitlab.com/libvirt/libvirt.git synced 2025-01-27 23:15:18 +00:00
Code Issues Packages Projects Releases Wiki Activity

cpu_map: Define md-clear CPUID bit

Browse Source 
CVE-2018-12126, CVE-2018-12127, CVE-2018-12130

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>
(cherry picked from commit 538d873571d7a682852dc1d70e5f4478f4d64e85)

Conflicts:
	src/cpu_map/x86_features.xml
            - no CPU map split downstream

	tests/cputestdata/x86_64-cpuid-Xeon-Platinum-8268-guest.xml
	tests/cputestdata/x86_64-cpuid-Xeon-Platinum-8268-host.xml
            - test data missing downstream

	tests/cputestdata/x86_64-cpuid-Xeon-E3-1225-v5-guest.xml
	tests/cputestdata/x86_64-cpuid-Xeon-E3-1225-v5-host.xml
            - intel-pt feature is missing downstream

Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
This commit is contained in:
Jiri Denemark 2019-04-05 15:11:20 +02:00 committed by Daniel P. Berrangé
parent 36151b10d3
commit 7bde733e90
5 changed files with 7 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
src/cpu/cpu_map.xml
View File

@ -295,6 +295,9 @@
<feature name='avx512-4fmaps'>
<cpuid eax_in='0x07' ecx_in='0x00' edx='0x00000008'/>
</feature>
<feature name='md-clear'> <!-- md_clear -->
<cpuid eax_in='0x07' ecx_in='0x00' edx='0x00000400'/>
</feature>
<feature name='spec-ctrl'>
<cpuid eax_in='0x07' ecx_in='0x00' edx='0x04000000'/>
</feature>

2
tests/cputestdata/x86_64-cpuid-Xeon-E3-1225-v5-enabled.xml
View File

@ -2,7 +2,7 @@
<cpudata arch='x86'>
<cpuid eax_in='0x00000001' ecx_in='0x00' eax='0x00000000' ebx='0x00000000' ecx='0xf7fa3203' edx='0x0f8bfbff'/>
<cpuid eax_in='0x00000006' ecx_in='0x00' eax='0x00000004' ebx='0x00000000' ecx='0x00000000' edx='0x00000000'/>
<cpuid eax_in='0x00000007' ecx_in='0x00' eax='0x00000000' ebx='0x009c4fbb' ecx='0x00000000' edx='0x8c000000'/>
<cpuid eax_in='0x00000007' ecx_in='0x00' eax='0x00000000' ebx='0x009c4fbb' ecx='0x00000000' edx='0x8c000400'/>
<cpuid eax_in='0x0000000d' ecx_in='0x01' eax='0x00000007' ebx='0x00000000' ecx='0x00000000' edx='0x00000000'/>
<cpuid eax_in='0x80000001' ecx_in='0x00' eax='0x00000000' ebx='0x00000000' ecx='0x00000121' edx='0x2c100800'/>
</cpudata>

1
tests/cputestdata/x86_64-cpuid-Xeon-E3-1225-v5-guest.xml
View File

@ -19,6 +19,7 @@
<feature policy='require' name='osxsave'/>
<feature policy='require' name='tsc_adjust'/>
<feature policy='require' name='clflushopt'/>
<feature policy='require' name='md-clear'/>
<feature policy='require' name='stibp'/>
<feature policy='require' name='ssbd'/>
<feature policy='require' name='xsaves'/>

1
tests/cputestdata/x86_64-cpuid-Xeon-E3-1225-v5-host.xml
View File

@ -20,6 +20,7 @@
<feature name='osxsave'/>
<feature name='tsc_adjust'/>
<feature name='clflushopt'/>
<feature name='md-clear'/>
<feature name='stibp'/>
<feature name='ssbd'/>
<feature name='xsaves'/>

1
tests/cputestdata/x86_64-cpuid-Xeon-E3-1225-v5-json.xml
View File

@ -5,6 +5,7 @@
<feature policy='require' name='hypervisor'/>
<feature policy='require' name='tsc_adjust'/>
<feature policy='require' name='clflushopt'/>
<feature policy='require' name='md-clear'/>
<feature policy='require' name='stibp'/>
<feature policy='require' name='ssbd'/>
<feature policy='require' name='pdpe1gb'/>