diff options
| author | Jing Liu <jing2.liu@intel.com> | 2022-02-16 22:04:27 -0800 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2022-03-15 11:50:50 +0100 |
| commit | 131266b7565bd437127bd231563572696bb27235 (patch) | |
| tree | e96d846af98572fda44f2ff4713da2a1f4dc6454 /target/i386/cpu.c | |
| parent | 1ea5208febcc068449b63282d72bb719ab67a466 (diff) | |
x86: Fix the 64-byte boundary enumeration for extended state
The extended state subleaves (EAX=0Dh, ECX=n, n>1).ECX[1]
indicate whether the extended state component locates
on the next 64-byte boundary following the preceding state
component when the compacted format of an XSAVE area is
used.
Right now, they are all zero because no supported component
needed the bit to be set, but the upcoming AMX feature will
use it. Fix the subleaves value according to KVM's supported
cpuid.
Signed-off-by: Jing Liu <jing2.liu@intel.com>
Signed-off-by: Yang Zhong <yang.zhong@intel.com>
Message-Id: <20220217060434.52460-2-yang.zhong@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'target/i386/cpu.c')
| -rw-r--r-- | target/i386/cpu.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/target/i386/cpu.c b/target/i386/cpu.c index 6c7ef1099b..0f3c477dfc 100644 --- a/target/i386/cpu.c +++ b/target/i386/cpu.c @@ -5488,6 +5488,7 @@ void cpu_x86_cpuid(CPUX86State *env, uint32_t index, uint32_t count, const ExtSaveArea *esa = &x86_ext_save_areas[count]; *eax = esa->size; *ebx = esa->offset; + *ecx = esa->ecx & ESA_FEATURE_ALIGN64_MASK; } } break; |