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target/i386: define md-clear bit

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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.

Backports commit b2ae52101fca7f9547ac2f388085dbc58f8fe1c0 from qemu
This commit is contained in:
Paolo Bonzini 2019-05-23 14:48:03 -04:00 committed by Lioncash
parent 4a1b8d64bd
commit a4f2517f46
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GPG key ID: 4E3C3CC1031BA9C7
1 changed files with 1 additions and 1 deletions
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qemu/target/i386/cpu.c
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@ -879,7 +879,7 @@ 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, NULL, NULL,
NULL, NULL, NULL, NULL,