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From 5f41a4ac3ff6527f7a23c3b2a2d8bef128f5c077 Mon Sep 17 00:00:00 2001
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From: Eduardo Habkost <ehabkost@redhat.com>
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Date: Tue, 24 Sep 2019 20:50:32 +0200
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Subject: [PATCH 12/12] target/i386: add MDS-NO feature
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RH-Author: Eduardo Habkost <ehabkost@redhat.com>
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Message-id: <20190924205032.12926-2-ehabkost@redhat.com>
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Patchwork-id: 90873
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O-Subject: [RHEL-7.8 qemu-kvm PATCH 1/1] target/i386: add MDS-NO feature
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Bugzilla: 1714791
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RH-Acked-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
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RH-Acked-by: Igor Mammedov <imammedo@redhat.com>
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RH-Acked-by: Paolo Bonzini <pbonzini@redhat.com>
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From: Paolo Bonzini <pbonzini@redhat.com>
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Microarchitectural Data Sampling is a hardware vulnerability which allows
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unprivileged speculative access to data which is available in various CPU
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internal buffers.
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Some Intel processors use the ARCH_CAP_MDS_NO bit in the
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IA32_ARCH_CAPABILITIES
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MSR to report that they are not vulnerable, make it available to guests.
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Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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Message-Id: <20190516185320.28340-1-pbonzini@redhat.com>
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Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
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(cherry picked from commit 20140a82c67467f53814ca197403d5e1b561a5e5)
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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 3ea4e97..f92cb62 100644
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--- a/target-i386/cpu.c
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+++ b/target-i386/cpu.c
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@@ -211,7 +211,7 @@ static const char *cpuid_apm_edx_feature_name[] = {
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static const char *cpuid_arch_capabilities_feature_name[] = {
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"rdctl-no", "ibrs-all", "rsba", "skip-l1dfl-vmentry",
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- "ssb-no", NULL, NULL, NULL,
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+ "ssb-no", "mds-no", 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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--
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1.8.3.1
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