|
 |
8b1478 |
From 7aa728ae021e3b29fb5903ae0ff894a5bd40bbdc Mon Sep 17 00:00:00 2001
|
|
|
8b1478 |
From: Eduardo Habkost <ehabkost@redhat.com>
|
|
|
8b1478 |
Date: Tue, 17 Dec 2019 22:23:41 +0100
|
|
|
8b1478 |
Subject: [PATCH 1/2] target/i386: Export TAA_NO bit to guests
|
|
|
8b1478 |
|
|
|
8b1478 |
RH-Author: Eduardo Habkost <ehabkost@redhat.com>
|
|
|
8b1478 |
Message-id: <20191217222342.1939034-2-ehabkost@redhat.com>
|
|
|
8b1478 |
Patchwork-id: 93164
|
|
|
8b1478 |
O-Subject: [RHEL-7.8 qemu-kvm-rhev PATCH 1/2] target/i386: Export TAA_NO bit to guests
|
|
|
8b1478 |
Bugzilla: 1779530
|
|
|
8b1478 |
RH-Acked-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
|
|
|
8b1478 |
RH-Acked-by: Igor Mammedov <imammedo@redhat.com>
|
|
|
8b1478 |
RH-Acked-by: Miroslav Rezanina <mrezanin@redhat.com>
|
|
|
8b1478 |
|
|
|
8b1478 |
From: Pawan Gupta <pawan.kumar.gupta@linux.intel.com>
|
|
|
8b1478 |
|
|
|
8b1478 |
TSX Async Abort (TAA) is a side channel attack on internal buffers in
|
|
|
8b1478 |
some Intel processors similar to Microachitectural Data Sampling (MDS).
|
|
|
8b1478 |
|
|
|
8b1478 |
Some future Intel processors will use the ARCH_CAP_TAA_NO bit in the
|
|
|
8b1478 |
IA32_ARCH_CAPABILITIES MSR to report that they are not vulnerable to
|
|
|
8b1478 |
TAA. Make this bit available to guests.
|
|
|
8b1478 |
|
|
|
8b1478 |
Signed-off-by: Pawan Gupta <pawan.kumar.gupta@linux.intel.com>
|
|
|
8b1478 |
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
|
|
|
8b1478 |
(cherry picked from commit 7fac38635e1cc5ebae34eb6530da1009bd5808e4)
|
|
|
8b1478 |
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
|
|
|
8b1478 |
Signed-off-by: Miroslav Rezanina <mrezanin@redhat.com>
|
|
|
8b1478 |
---
|
|
|
8b1478 |
target/i386/cpu.c | 2 +-
|
|
|
8b1478 |
1 file changed, 1 insertion(+), 1 deletion(-)
|
|
|
8b1478 |
|
|
|
8b1478 |
diff --git a/target/i386/cpu.c b/target/i386/cpu.c
|
|
|
8b1478 |
index 6a1d59c..8d03d0e 100644
|
|
|
8b1478 |
--- a/target/i386/cpu.c
|
|
|
8b1478 |
+++ b/target/i386/cpu.c
|
|
|
8b1478 |
@@ -1148,7 +1148,7 @@ static FeatureWordInfo feature_word_info[FEATURE_WORDS] = {
|
|
|
8b1478 |
.feat_names = {
|
|
|
8b1478 |
"rdctl-no", "ibrs-all", "rsba", "skip-l1dfl-vmentry",
|
|
|
8b1478 |
"ssb-no", "mds-no", NULL, NULL,
|
|
|
8b1478 |
- NULL, NULL, NULL, NULL,
|
|
|
8b1478 |
+ "taa-no", NULL, NULL, NULL,
|
|
|
8b1478 |
NULL, NULL, NULL, NULL,
|
|
|
8b1478 |
NULL, NULL, NULL, NULL,
|
|
|
8b1478 |
NULL, NULL, NULL, NULL,
|
|
|
8b1478 |
--
|
|
|
8b1478 |
1.8.3.1
|
|
|
8b1478 |
|