On KVM, the KVM_SET_XSAVE would be executed with a 0 xstate_bv,
and not restore anything.
Since FP and SSE data are always valid, set them in xstate_bv at reset
time. In fact, that value is the same that KVM_GET_XSAVE returns on
pre-XSAVE hosts.
Signed-off-by: Paolo Bonzini <pbonzini@xxxxxxxxxx>
Signed-off-by: Gleb Natapov <gleb@xxxxxxxxxx>
---
target-i386/cpu.c | 1 +
target-i386/cpu.h | 4 ++++
2 files changed, 5 insertions(+)
diff --git a/target-i386/cpu.c b/target-i386/cpu.c
index b682802..ea99b26 100644
--- a/target-i386/cpu.c
+++ b/target-i386/cpu.c
@@ -2405,6 +2405,7 @@ static void x86_cpu_reset(CPUState *s)
env->fpuc = 0x37f;
env->mxcsr = 0x1f80;
+ env->xstate_bv = XSTATE_FP | XSTATE_SSE;
env->pat = 0x0007040600070406ULL;
env->msr_ia32_misc_enable = MSR_IA32_MISC_ENABLE_DEFAULT;
diff --git a/target-i386/cpu.h b/target-i386/cpu.h
index 5723eff..ea373e8 100644
--- a/target-i386/cpu.h
+++ b/target-i386/cpu.h
@@ -380,6 +380,10 @@
#define MSR_VM_HSAVE_PA 0xc0010117
+#define XSTATE_FP 1
+#define XSTATE_SSE 2
+#define XSTATE_YMM 4
+
/* CPUID feature words */
typedef enum FeatureWord {
FEAT_1_EDX, /* CPUID[1].EDX */
--
1.8.3.1
--
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