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i386: Add CPUID bit for WBNOINVD 

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

Signed-off-by: Robert Hoo <robert.hu@linux.intel.com>
Message-Id: <1530781798-183214-5-git-send-email-robert.hu@linux.intel.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
This commit is contained in:
Robert Hoo 2018-07-05 17:09:57 +08:00 committed by Eduardo Habkost
parent 5131dc433d
commit 59a80a19ca
2 changed files with 3 additions and 1 deletions
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2
target/i386/cpu.c
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@ -1028,7 +1028,7 @@ static FeatureWordInfo feature_word_info[FEATURE_WORDS] = {
.feat_names = {
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
target/i386/cpu.h
View File

@ -694,6 +694,8 @@ typedef uint32_t FeatureWordArray[FEATURE_WORDS];
#define CPUID_7_0_EDX_ARCH_CAPABILITIES (1U << 29) /*Arch Capabilities*/
#define CPUID_7_0_EDX_SPEC_CTRL_SSBD (1U << 31) /* Speculative Store Bypass Disable */
#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)