From: Paolo Bonzini Date: Fri, 13 Sep 2013 13:55:57 +0000 (+0200) Subject: x86: fix migration from pre-version 12 X-Git-Tag: v1.7.0-rc0~50^2~2 X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=c74f41bbcc83d12787ac42f2c74fc2be54e9f222;p=thirdparty%2Fqemu.git x86: fix migration from pre-version 12 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 Signed-off-by: Gleb Natapov --- diff --git a/target-i386/cpu.c b/target-i386/cpu.c index b6828022bc2..ea99b2692d9 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 5723eff9a8f..ea373e82dc8 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 */