From 43f2e3a36586d9e7e12e5638ae19837f726490ff Mon Sep 17 00:00:00 2001
From: "plai@redhat.com" <plai@redhat.com>
Date: Tue, 20 Aug 2019 00:24:40 +0100
Subject: [PATCH 9/9] target/i386: add MDS-NO feature

RH-Author: plai@redhat.com
Message-id: <1566260680-20995-10-git-send-email-plai@redhat.com>
Patchwork-id: 90071
O-Subject: [RHEL8.0 qemu-kvm PATCH v3 9/9] target/i386: add MDS-NO feature
Bugzilla: 1718235
RH-Acked-by: Eduardo Habkost <ehabkost@redhat.com>
RH-Acked-by: John Snow <jsnow@redhat.com>
RH-Acked-by: Igor Mammedov <imammedo@redhat.com>

From: Paolo Bonzini <pbonzini@redhat.com>

Microarchitectural Data Sampling is a hardware vulnerability which allows
unprivileged speculative access to data which is available in various CPU
internal buffers.

Some Intel processors use the ARCH_CAP_MDS_NO bit in the
IA32_ARCH_CAPABILITIES
MSR to report that they are not vulnerable, make it available to guests.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Message-Id: <20190516185320.28340-1-pbonzini@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
(cherry picked from commit 20140a82c67467f53814ca197403d5e1b561a5e5)
Signed-off-by: Paul Lai <plai@redhat.com>
Signed-off-by: Danilo C. L. de Paula <ddepaula@redhat.com>
---
 target/i386/cpu.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/target/i386/cpu.c b/target/i386/cpu.c
index 365c92c..07ec8bc 100644
--- a/target/i386/cpu.c
+++ b/target/i386/cpu.c
@@ -1147,7 +1147,7 @@ static FeatureWordInfo feature_word_info[FEATURE_WORDS] = {
         .type = MSR_FEATURE_WORD,
         .feat_names = {
             "rdctl-no", "ibrs-all", "rsba", "skip-l1dfl-vmentry",
-            "ssb-no", NULL, NULL, NULL,
+            "ssb-no", "mds-no", NULL, NULL,
             NULL, NULL, NULL, NULL,
             NULL, NULL, NULL, NULL,
             NULL, NULL, NULL, NULL,
-- 
1.8.3.1