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From 7085d8ac9d907fbfddb2c2c432f239939aa2aa2f Mon Sep 17 00:00:00 2001
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From: Eduardo Habkost <ehabkost@redhat.com>
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Date: Wed, 13 Jun 2018 18:08:12 +0200
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Subject: [PATCH 153/268] i386: define the AMD 'virt-ssbd' CPUID feature bit
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(CVE-2018-3639)
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MIME-Version: 1.0
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Content-Type: text/plain; charset=UTF-8
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Content-Transfer-Encoding: 8bit
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RH-Author: Eduardo Habkost <ehabkost@redhat.com>
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Message-id: <20180613180812.28169-3-ehabkost@redhat.com>
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Patchwork-id: 80676
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O-Subject: [RHEL-7.6 qemu-kvm-rhev PATCH 2/2] i386: define the AMD 'virt-ssbd' CPUID feature bit (CVE-2018-3639)
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Bugzilla: 1574216
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RH-Acked-by: Igor Mammedov <imammedo@redhat.com>
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RH-Acked-by: Miroslav Rezanina <mrezanin@redhat.com>
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RH-Acked-by: Laurent Vivier <lvivier@redhat.com>
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From: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
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AMD Zen expose the Intel equivalant to Speculative Store Bypass Disable
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via the 0x80000008_EBX[25] CPUID feature bit.
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This needs to be exposed to guest OS to allow them to protect
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against CVE-2018-3639.
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Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
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Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
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Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
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Message-Id: <20180521215424.13520-3-berrange@redhat.com>
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Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
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(cherry picked from commit 403503b162ffc33fb64cfefdf7b880acf41772cd)
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Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
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Signed-off-by: Miroslav Rezanina <mrezanin@redhat.com>
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---
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target/i386/cpu.c | 2 +-
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1 file changed, 1 insertion(+), 1 deletion(-)
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diff --git a/target/i386/cpu.c b/target/i386/cpu.c
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index 8647109..caab4e2 100644
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--- a/target/i386/cpu.c
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+++ b/target/i386/cpu.c
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@@ -1033,7 +1033,7 @@ static FeatureWordInfo feature_word_info[FEATURE_WORDS] = {
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"ibpb", NULL, NULL, NULL,
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NULL, NULL, NULL, NULL,
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NULL, NULL, NULL, NULL,
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- NULL, NULL, NULL, NULL,
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+ NULL, "virt-ssbd", NULL, NULL,
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NULL, NULL, NULL, NULL,
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},
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.cpuid_eax = 0x80000008,
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--
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1.8.3.1
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