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target-i386: kvm: Simplify MSR setting functions 

Simplify kvm_put_tscdeadline_msr() and
kvm_put_msr_feature_control() using kvm_msr_buf and the
kvm_msr_entry_add() helper.

Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
master
Eduardo Habkost 2015-12-16 17:06:45 -02:00
parent 9c600a8454
commit e25ffda7bd
1 changed files with 6 additions and 21 deletions
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27
target-i386/kvm.c
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@ -1487,24 +1487,16 @@ static void kvm_msr_entry_add(X86CPU *cpu, uint32_t index, uint64_t value)
static int kvm_put_tscdeadline_msr(X86CPU *cpu)
{
CPUX86State *env = &cpu->env;
struct {
struct kvm_msrs info;
struct kvm_msr_entry entries[1];
} msr_data;
struct kvm_msr_entry *msrs = msr_data.entries;
int ret;
if (!has_msr_tsc_deadline) {
return 0;
}
kvm_msr_entry_set(&msrs[0], MSR_IA32_TSCDEADLINE, env->tsc_deadline);
kvm_msr_buf_reset(cpu);
kvm_msr_entry_add(cpu, MSR_IA32_TSCDEADLINE, env->tsc_deadline);
msr_data.info = (struct kvm_msrs) {
.nmsrs = 1,
};
ret = kvm_vcpu_ioctl(CPU(cpu), KVM_SET_MSRS, &msr_data);
ret = kvm_vcpu_ioctl(CPU(cpu), KVM_SET_MSRS, cpu->kvm_msr_buf);
if (ret < 0) {
return ret;
}
@ -1521,24 +1513,17 @@ static int kvm_put_tscdeadline_msr(X86CPU *cpu)
*/
static int kvm_put_msr_feature_control(X86CPU *cpu)
{
struct {
struct kvm_msrs info;
struct kvm_msr_entry entry;
} msr_data;
int ret;
if (!has_msr_feature_control) {
return 0;
}
kvm_msr_entry_set(&msr_data.entry, MSR_IA32_FEATURE_CONTROL,
kvm_msr_buf_reset(cpu);
kvm_msr_entry_add(cpu, MSR_IA32_FEATURE_CONTROL,
cpu->env.msr_ia32_feature_control);
msr_data.info = (struct kvm_msrs) {
.nmsrs = 1,
};
ret = kvm_vcpu_ioctl(CPU(cpu), KVM_SET_MSRS, &msr_data);
ret = kvm_vcpu_ioctl(CPU(cpu), KVM_SET_MSRS, cpu->kvm_msr_buf);
if (ret < 0) {
return ret;
}