i386: Add macro for stibp

stibp feature is already added through the following commit.
https://github.com/qemu/qemu/commit/0e8916582991b9fd0b94850a8444b8b80d0a0955

Add a macro for it to allow CPU models to report it when host supports.

Signed-off-by: Cathy Zhang <cathy.zhang@intel.com>
Reviewed-by: Xiaoyao Li <xiaoyao.li@intel.com>
Reviewed-by: Tao Xu <tao3.xu@intel.com>
Message-Id: <1571729728-23284-3-git-send-email-cathy.zhang@intel.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>

diff --git a/target/i386/cpu.h b/target/i386/cpu.h
index 39d37e12256069b92c79985908499616f29055be..af282936a785a25f651d0db1a8cfc7ac1f639cd5 100644 (file)
--- a/target/i386/cpu.h
+++ b/target/i386/cpu.h
@@ -771,6 +771,8 @@ typedef uint64_t FeatureWordArray[FEATURE_WORDS];
 #define CPUID_7_0_EDX_AVX512_4FMAPS     (1U << 3)
 /* Speculation Control */
 #define CPUID_7_0_EDX_SPEC_CTRL         (1U << 26)
+/* Single Thread Indirect Branch Predictors */
+#define CPUID_7_0_EDX_STIBP             (1U << 27)
 /* Arch Capabilities */
 #define CPUID_7_0_EDX_ARCH_CAPABILITIES (1U << 29)
 /* Core Capability */