File 0100-i386-define-the-AMD-virt-ssbd-CPUID.patch of Package qemu

Overview Repositories Revisions Requests Users Attributes Meta

File 0100-i386-define-the-AMD-virt-ssbd-CPUID.patch of Package qemu

From f8b15131bb24b7331d3edc1917a5343abd4c9af5 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] i386: define the AMD 'virt-ssbd' CPUID feature bit
 (CVE-2018-3639)
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

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)
[BR: BSC#1092885 CVE-2018-3639]
Signed-off-by: Bruce Rogers <brogers@suse.com>
---
 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 2cbeaa25b2..cdc6b04ff2 100644
--- a/target/i386/cpu.c
+++ b/target/i386/cpu.c
@@ -492,7 +492,7 @@ 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,

Places

File 0100-i386-define-the-AMD-virt-ssbd-CPUID.patch of Package qemu

Places