2019-05-15 00:20:21 +02:00
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From: Paolo Bonzini <pbonzini@redhat.com>
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2019-07-25 23:18:09 +02:00
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Date: Wed, 15 May 2019 15:10:10 +0100
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2019-05-15 00:20:21 +02:00
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Subject: target/i386: define md-clear bit
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md-clear is a new CPUID bit which is set when microcode provides the
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mechanism to invoke a flush of various exploitable CPU buffers by invoking
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2019-07-25 23:18:09 +02:00
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the VERW instruction.
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2019-05-15 00:20:21 +02:00
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Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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2019-07-25 23:18:09 +02:00
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Message-Id: <20190515141011.5315-2-berrange@redhat.com>
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Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
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(cherry picked from commit b2ae52101fca7f9547ac2f388085dbc58f8fe1c0)
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2019-05-15 00:20:21 +02:00
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[BR: BSC#1111331 CVE-2018-12126 CVE-2018-12127 CVE-2018-12130
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CVE-2019-11091]
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Signed-off-by: Bruce Rogers <brogers@suse.com>
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---
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2019-07-25 23:18:09 +02:00
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target/i386/cpu.c | 2 +-
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1 file changed, 1 insertion(+), 1 deletion(-)
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2019-05-15 00:20:21 +02:00
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diff --git a/target/i386/cpu.c b/target/i386/cpu.c
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index d6bb57d210..4ea78a4939 100644
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--- a/target/i386/cpu.c
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+++ b/target/i386/cpu.c
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@@ -1076,7 +1076,7 @@ static FeatureWordInfo feature_word_info[FEATURE_WORDS] = {
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.feat_names = {
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NULL, NULL, "avx512-4vnniw", "avx512-4fmaps",
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NULL, NULL, NULL, NULL,
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- NULL, NULL, NULL, NULL,
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+ NULL, NULL, "md-clear", NULL,
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NULL, NULL, NULL, NULL,
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NULL, NULL, NULL, NULL,
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NULL, NULL, NULL, NULL,
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