From: Robert Hoo <robert...@linux.intel.com>
WBNOINVD: Write back and do not invalidate cache, enumerated by
CPUID.(EAX=80000008H, ECX=0):EBX[bit 9].
Signed-off-by: Robert Hoo <robert...@linux.intel.com>
Message-Id: <1530781798-183214-5-git-send-email-robert...@linux.intel.com>
Signed-off-by: Eduardo Habkost <ehabk...@redhat.com>
---
target/i386/cpu.h | 2 ++
target/i386/cpu.c | 2 +-
2 files changed, 3 insertions(+), 1 deletion(-)
diff --git a/target/i386/cpu.h b/target/i386/cpu.h
index 4a95c63640..9cad5812cd 100644
--- a/target/i386/cpu.h
+++ b/target/i386/cpu.h
@@ -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)
diff --git a/target/i386/cpu.c b/target/i386/cpu.c
index 3e25773d26..4f08cedfcf 100644
--- a/target/i386/cpu.c
+++ b/target/i386/cpu.c
@@ -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,
--
2.18.0.rc1.1.g3f1ff2140
