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From 43f2e3a36586d9e7e12e5638ae19837f726490ff Mon Sep 17 00:00:00 2001
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From: "plai@redhat.com" <plai@redhat.com>
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Date: Tue, 20 Aug 2019 00:24:40 +0100
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Subject: [PATCH 9/9] target/i386: add MDS-NO feature
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RH-Author: plai@redhat.com
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Message-id: <1566260680-20995-10-git-send-email-plai@redhat.com>
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Patchwork-id: 90071
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O-Subject: [RHEL8.0 qemu-kvm PATCH v3 9/9] target/i386: add MDS-NO feature
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Bugzilla: 1718235
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RH-Acked-by: Eduardo Habkost <ehabkost@redhat.com>
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RH-Acked-by: John Snow <jsnow@redhat.com>
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RH-Acked-by: Igor Mammedov <imammedo@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: Paul Lai <plai@redhat.com>
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Signed-off-by: Danilo C. L. de Paula <ddepaula@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 365c92c..07ec8bc 100644
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--- a/target/i386/cpu.c
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+++ b/target/i386/cpu.c
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@@ -1147,7 +1147,7 @@ static FeatureWordInfo feature_word_info[FEATURE_WORDS] = {
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.type = MSR_FEATURE_WORD,
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.feat_names = {
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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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