On 7/16/2020 11:15 PM, Eduardo Habkost wrote:
On Thu, Jul 16, 2020 at 04:20:18PM +0800, Xiaoyao Li wrote:
Per Intel SDM vol 1, 13.2, if CPUID.1:ECX.XSAVE[bit 26] is 0, the
processor provides no further enumeration through CPUID function 0DH.
Can you explain what's the bug you are trying to fix?
env->features[FEAT_XSAVE_COMP_*] is already initialized as zero.
When "-cpu host", it's not zero I think.
Signed-off-by: Xiaoyao Li <xiaoyao...@intel.com>
---
target/i386/cpu.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/target/i386/cpu.c b/target/i386/cpu.c
index 1e5123251d74..f5f11603e805 100644
--- a/target/i386/cpu.c
+++ b/target/i386/cpu.c
@@ -6261,6 +6261,8 @@ static void x86_cpu_enable_xsave_components(X86CPU *cpu)
uint64_t mask;
if (!(env->features[FEAT_1_ECX] & CPUID_EXT_XSAVE)) {
+ env->features[FEAT_XSAVE_COMP_LO] = 0;
+ env->features[FEAT_XSAVE_COMP_HI] = 0;
return;
}
--
2.18.4
