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target-i386: assert that KVM_GET/SET_MSRS can set all requested MSRs
This would have caught the bug in the previous patch. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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273c515c0a
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48e1a45c31
@ -141,6 +141,7 @@ static int kvm_get_tsc(CPUState *cs)
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return ret;
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}
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assert(ret == 1);
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env->tsc = msr_data.entries[0].data;
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return 0;
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}
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@ -1446,6 +1447,7 @@ static int kvm_put_tscdeadline_msr(X86CPU *cpu)
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struct kvm_msr_entry entries[1];
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} msr_data;
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struct kvm_msr_entry *msrs = msr_data.entries;
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int ret;
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if (!has_msr_tsc_deadline) {
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return 0;
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@ -1457,7 +1459,13 @@ static int kvm_put_tscdeadline_msr(X86CPU *cpu)
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.nmsrs = 1,
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};
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return kvm_vcpu_ioctl(CPU(cpu), KVM_SET_MSRS, &msr_data);
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ret = kvm_vcpu_ioctl(CPU(cpu), KVM_SET_MSRS, &msr_data);
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if (ret < 0) {
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return ret;
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}
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assert(ret == 1);
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return 0;
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}
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/*
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@ -1472,6 +1480,11 @@ static int kvm_put_msr_feature_control(X86CPU *cpu)
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struct kvm_msrs info;
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struct kvm_msr_entry entry;
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} msr_data;
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int ret;
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if (!has_msr_feature_control) {
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return 0;
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}
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kvm_msr_entry_set(&msr_data.entry, MSR_IA32_FEATURE_CONTROL,
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cpu->env.msr_ia32_feature_control);
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@ -1480,7 +1493,13 @@ static int kvm_put_msr_feature_control(X86CPU *cpu)
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.nmsrs = 1,
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};
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return kvm_vcpu_ioctl(CPU(cpu), KVM_SET_MSRS, &msr_data);
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ret = kvm_vcpu_ioctl(CPU(cpu), KVM_SET_MSRS, &msr_data);
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if (ret < 0) {
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return ret;
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}
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assert(ret == 1);
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return 0;
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}
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static int kvm_put_msrs(X86CPU *cpu, int level)
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@ -1492,6 +1511,7 @@ static int kvm_put_msrs(X86CPU *cpu, int level)
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} msr_data;
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struct kvm_msr_entry *msrs = msr_data.entries;
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int n = 0, i;
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int ret;
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kvm_msr_entry_set(&msrs[n++], MSR_IA32_SYSENTER_CS, env->sysenter_cs);
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kvm_msr_entry_set(&msrs[n++], MSR_IA32_SYSENTER_ESP, env->sysenter_esp);
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@ -1685,8 +1705,13 @@ static int kvm_put_msrs(X86CPU *cpu, int level)
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.nmsrs = n,
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};
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return kvm_vcpu_ioctl(CPU(cpu), KVM_SET_MSRS, &msr_data);
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ret = kvm_vcpu_ioctl(CPU(cpu), KVM_SET_MSRS, &msr_data);
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if (ret < 0) {
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return ret;
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}
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assert(ret == n);
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return 0;
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}
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@ -2055,6 +2080,7 @@ static int kvm_get_msrs(X86CPU *cpu)
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return ret;
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}
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assert(ret == n);
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for (i = 0; i < ret; i++) {
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uint32_t index = msrs[i].index;
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switch (index) {
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@ -2511,7 +2537,7 @@ int kvm_arch_put_registers(CPUState *cpu, int level)
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assert(cpu_is_stopped(cpu) || qemu_cpu_is_self(cpu));
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if (level >= KVM_PUT_RESET_STATE && has_msr_feature_control) {
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if (level >= KVM_PUT_RESET_STATE) {
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ret = kvm_put_msr_feature_control(x86_cpu);
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if (ret < 0) {
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return ret;
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