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i386: Add CPUID bit for WBNOINVD

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WBNOINVD: Write back and do not invalidate cache, enumerated by
CPUID.(EAX=80000008H, ECX=0):EBX[bit 9].

Backports commit 59a80a19ca31a6fff9fdbb6b4cf55a5a0767c3bc from qemu
This commit is contained in:
Robert Hoo 2018-08-17 14:29:09 -04:00 committed by Lioncash
parent 8b59666ae6
commit 0e16ff259b
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GPG key ID: 4E3C3CC1031BA9C7
2 changed files with 3 additions and 1 deletions
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2
qemu/target/i386/cpu.c
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@ -928,7 +928,7 @@ static FeatureWordInfo feature_word_info[FEATURE_WORDS] = {
{
NULL, NULL, NULL, NULL,
NULL, NULL, NULL, NULL,
NULL, NULL, NULL, NULL,
NULL, "wbnoinvd", NULL, NULL,
"ibpb", NULL, NULL, NULL,
NULL, NULL, NULL, NULL,
NULL, NULL, NULL, NULL,

2
qemu/target/i386/cpu.h
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@ -674,6 +674,8 @@ typedef uint32_t FeatureWordArray[FEATURE_WORDS];
#define KVM_HINTS_DEDICATED (1U << 0)
#define CPUID_8000_0008_EBX_WBNOINVD (1U << 9) /* Write back and do not invalidate cache */
#define CPUID_8000_0008_EBX_IBPB (1U << 12) /* Indirect Branch Prediction Barrier */
#define CPUID_XSAVE_XSAVEOPT (1U << 0)