From b76070b36f9952421488fbf5a15f470c53e1c136 Mon Sep 17 00:00:00 2001
Message-Id: <b76070b36f9952421488fbf5a15f470c53e1c136@dist-git>
From: Jiri Denemark <jdenemar@redhat.com>
Date: Fri, 13 Dec 2019 14:28:07 +0100
Subject: [PATCH] cpu_map: Add TAA_NO bit for IA32_ARCH_CAPABILITIES MSR
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
CVE-2019-11135
CPUs with TAA_NO bit of IA32_ARCH_CAPABILITIES MSR set to 1 are not
vulnerable to TSX Asynchronous Abort and passing this bit to a guest
may avoid unnecessary mitigations.
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
(cherry picked from commit 07aaced4e6ea6db8b27f44636f51cafa6f1847a8)
Conflicts:
src/cpu_map/x86_features.xml
- cpu_map is still monolithic downstream
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Message-Id: <0ff574a85f1cc7b53140d41a6a62254bea08a06f.1576243094.git.jdenemar@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
---
src/cpu/cpu_map.xml | 3 +++
1 file changed, 3 insertions(+)
diff --git a/src/cpu/cpu_map.xml b/src/cpu/cpu_map.xml
index 7b9f8bb452..c2b3fca47a 100644
--- a/src/cpu/cpu_map.xml
+++ b/src/cpu/cpu_map.xml
@@ -501,6 +501,9 @@
<feature name='mds-no'>
<msr index='0x10a' edx='0x00000000' eax='0x00000020'/>
</feature>
+ <feature name='taa-no'>
+ <msr index='0x10a' edx='0x00000000' eax='0x00000100'/>
+ </feature>
<!-- models -->
<model name='486'>
--
2.24.0