Commit 403503b1 authored by Konrad Rzeszutek Wilk's avatar Konrad Rzeszutek Wilk Committed by Eduardo Habkost
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i386: define the AMD 'virt-ssbd' CPUID feature bit (CVE-2018-3639) 



AMD Zen expose the Intel equivalant to Speculative Store Bypass Disable
via the 0x80000008_EBX[25] CPUID feature bit.

This needs to be exposed to guest OS to allow them to protect
against CVE-2018-3639.

Signed-off-by: default avatarKonrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Reviewed-by: default avatarDaniel P. Berrangé <berrange@redhat.com>
Signed-off-by: default avatarDaniel P. Berrangé <berrange@redhat.com>
Message-Id: <20180521215424.13520-3-berrange@redhat.com>
Signed-off-by: default avatarEduardo Habkost <ehabkost@redhat.com>
parent cfeea0c0

target/i386/cpu.c

+1 −1
Original line number Diff line number Diff line
@@ -836,7 +836,7 @@ static FeatureWordInfo feature_word_info[FEATURE_WORDS] = { 
            "ibpb", NULL, NULL, NULL,

            NULL, NULL, NULL, NULL,

            NULL, NULL, NULL, NULL,

            NULL, NULL, NULL, NULL,

            NULL, "virt-ssbd", NULL, NULL,

            NULL, NULL, NULL, NULL,

        },

        .cpuid_eax = 0x80000008,