From acc51748038a8074fe3a7c769b101455afd64eb7 Mon Sep 17 00:00:00 2001

Message-Id: <acc51748038a8074fe3a7c769b101455afd64eb7@dist-git>

From: Jiri Denemark <jdenemar@redhat.com>

Date: Fri, 13 Dec 2019 14:28:08 +0100

Subject: [PATCH] cpu_map: Add TSX_CTRL bit for IA32_ARCH_CAPABILITIES MSR

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CVE-2019-11135

When TSX_CTRL bit of IA32_ARCH_CAPABILITIES MSR is set to 1, the CPU

supports IA32_TSX_CTRL MSR which can be used to disable and/or mask TSX.

Signed-off-by: Jiri Denemark <jdenemar@redhat.com>

Reviewed-by: Ján Tomko <jtomko@redhat.com>

(cherry picked from commit f411b7ef68221e82dec0129aaf2f2a26a8987504)

Conflicts:

	src/cpu_map/x86_features.xml

            - cpu_map is still monolithic downstream

Signed-off-by: Jiri Denemark <jdenemar@redhat.com>

Message-Id: <cb4f05c8c84ed910bcd4bceae58f6fd090684031.1576243094.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 c2b3fca47a..9609ce71a7 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='tsx-ctrl'>

+      <msr index='0x10a' edx='0x00000000' eax='0x00000080'/>

+    </feature>

     <feature name='taa-no'>

       <msr index='0x10a' edx='0x00000000' eax='0x00000100'/>

     </feature>

-- 

2.24.1