From f956cd4aed74d55ecc03d3c33ea66b1d933cb28f Mon Sep 17 00:00:00 2001
From: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Date: Mon, 21 May 2018 22:54:23 +0100
Subject: [PATCH 3/3] i386: define the AMD 'virt-ssbd' CPUID feature bit
(CVE-2018-3639)
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AMD Zen expose the Intel equivalant to Speculative Store Bypass Disable
via the 0x80000008_EBX[25] CPUID feature bit.
This needs to be exposed to guest OS to allow them to protect
against CVE-2018-3639.
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Message-Id: <20180521215424.13520-3-berrange@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
(cherry picked from commit 403503b162ffc33fb64cfefdf7b880acf41772cd)
---
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 2f5263e22f..2e305ab689 100644
--- a/target/i386/cpu.c
+++ b/target/i386/cpu.c
@@ -541,7 +541,7 @@ static FeatureWordInfo feature_word_info[FEATURE_WORDS] = {
"ibpb", NULL, NULL, NULL,
NULL, NULL, NULL, NULL,
NULL, NULL, NULL, NULL,
- NULL, NULL, NULL, NULL,
+ NULL, "virt-ssbd", NULL, NULL,
NULL, NULL, NULL, NULL,
},
.cpuid_eax = 0x80000008,
--
2.17.0
|
