From: Haozhong Zhang <haozhong.zh...@intel.com>
CPUID_7_0_EBX_CLFLUSHOPT is missed in current "Skylake-Server" cpu
model. Add it to "Skylake-Server" cpu model on pc-i440fx-2.12 and
pc-q35-2.12. Keep it disabled in "Skylake-Server" cpu model on older
machine types.
Signed-off-by: Haozhong Zhang <haozhong.zh...@intel.com>
Message-Id: <20171219033730.12748-3-haozhong.zh...@intel.com>
Reviewed-by: Eduardo Habkost <ehabk...@redhat.com>
Reviewed-by: Michael S. Tsirkin <m...@redhat.com>
Signed-off-by: Eduardo Habkost <ehabk...@redhat.com>
---
include/hw/i386/pc.h | 5 +++++
target/i386/cpu.c | 2 +-
2 files changed, 6 insertions(+), 1 deletion(-)
diff --git a/include/hw/i386/pc.h b/include/hw/i386/pc.h
index 83d825e896..bb49165fe0 100644
--- a/include/hw/i386/pc.h
+++ b/include/hw/i386/pc.h
@@ -323,6 +323,11 @@ bool e820_get_entry(int, uint32_t, uint64_t *, uint64_t *);
#define PC_COMPAT_2_11 \
HW_COMPAT_2_11 \
+ {\
+ .driver = "Skylake-Server" "-" TYPE_X86_CPU,\
+ .property = "clflushopt",\
+ .value = "off",\
+ },
#define PC_COMPAT_2_10 \
HW_COMPAT_2_10 \
diff --git a/target/i386/cpu.c b/target/i386/cpu.c
index ad8196b166..4385853646 100644
--- a/target/i386/cpu.c
+++ b/target/i386/cpu.c
@@ -1382,7 +1382,7 @@ static X86CPUDefinition builtin_x86_defs[] = {
CPUID_7_0_EBX_SMAP | CPUID_7_0_EBX_MPX | CPUID_7_0_EBX_CLWB |
CPUID_7_0_EBX_AVX512F | CPUID_7_0_EBX_AVX512DQ |
CPUID_7_0_EBX_AVX512BW | CPUID_7_0_EBX_AVX512CD |
- CPUID_7_0_EBX_AVX512VL,
+ CPUID_7_0_EBX_AVX512VL | CPUID_7_0_EBX_CLFLUSHOPT,
/* Missing: XSAVES (not supported by some Linux versions,
* including v4.1 to v4.12).
* KVM doesn't yet expose any XSAVES state save component,
--
2.14.3
