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