From b565bf8ec21b5aa9cc4cbadeca016bd7989a1a6c Mon Sep 17 00:00:00 2001 From: Eduardo Habkost Date: Tue, 13 Aug 2019 02:34:40 +0200 Subject: [PATCH 2/4] target/i386: add MDS-NO feature RH-Author: Eduardo Habkost Message-id: <20190813023440.3565-1-ehabkost@redhat.com> Patchwork-id: 89947 O-Subject: [RHEL-7.7.z qemu-kvm-rhev PATCH] target/i386: add MDS-NO feature Bugzilla: 1716726 RH-Acked-by: Paolo Bonzini RH-Acked-by: Dr. David Alan Gilbert RH-Acked-by: Igor Mammedov RH-Acked-by: Bandan Das From: Paolo Bonzini Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=1716726 Brew: https://brewweb.engineering.redhat.com/brew/taskinfo?taskID=23024015 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 Message-Id: <20190516185320.28340-1-pbonzini@redhat.com> Signed-off-by: Eduardo Habkost (cherry picked from commit 20140a82c67467f53814ca197403d5e1b561a5e5) Signed-off-by: Eduardo Habkost Signed-off-by: Miroslav Rezanina --- 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 928e53c..5d6b45b 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