File 0050-target-i386-define-md-clear-bit.patch of Package qemu-linux-user

Overview Repositories Revisions Requests Users Attributes Meta

File 0050-target-i386-define-md-clear-bit.patch of Package qemu-linux-user

From: Paolo Bonzini <pbonzini@redhat.com>
Date: Wed, 15 May 2019 15:10:10 +0100
Subject: target/i386: define md-clear bit

md-clear is a new CPUID bit which is set when microcode provides the
mechanism to invoke a flush of various exploitable CPU buffers by invoking
the VERW instruction.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Message-Id: <20190515141011.5315-2-berrange@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
(cherry picked from commit b2ae52101fca7f9547ac2f388085dbc58f8fe1c0)
[BR: BSC#1111331 CVE-2018-12126 CVE-2018-12127 CVE-2018-12130
CVE-2019-11091]
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 40814719bbd084d0bf10e240bae7..5f6f005e42aa3f973ee9691bc1ab 100644
--- a/target/i386/cpu.c
+++ b/target/i386/cpu.c
@@ -1038,7 +1038,7 @@ static FeatureWordInfo feature_word_info[FEATURE_WORDS] = {
         .feat_names = {
             NULL, NULL, "avx512-4vnniw", "avx512-4fmaps",
             NULL, NULL, NULL, NULL,
-            NULL, NULL, NULL, NULL,
+            NULL, NULL, "md-clear", NULL,
             NULL, NULL, NULL, NULL,
             NULL, NULL, "pconfig", NULL,
             NULL, NULL, NULL, NULL,

Places

File 0050-target-i386-define-md-clear-bit.patch of Package qemu-linux-user

Places