target-i386: introduce kvm_put_one_msr

Avoid further code duplication in the next patch.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

diff --git a/target-i386/kvm.c b/target-i386/kvm.c
index f1ad805..c57b01b 100644 (file)
--- a/target-i386/kvm.c
+++ b/target-i386/kvm.c
@@ -1532,6 +1532,14 @@ static void kvm_msr_entry_add(X86CPU *cpu, uint32_t index, uint64_t value)
     msrs->nmsrs++;
 }
 
+static int kvm_put_one_msr(X86CPU *cpu, int index, uint64_t value)
+{
+    kvm_msr_buf_reset(cpu);
+    kvm_msr_entry_add(cpu, index, value);
+
+    return kvm_vcpu_ioctl(CPU(cpu), KVM_SET_MSRS, cpu->kvm_msr_buf);
+}
+
 static int kvm_put_tscdeadline_msr(X86CPU *cpu)
 {
     CPUX86State *env = &cpu->env;
@@ -1541,10 +1549,7 @@ static int kvm_put_tscdeadline_msr(X86CPU *cpu)
         return 0;
     }
 
-    kvm_msr_buf_reset(cpu);
-    kvm_msr_entry_add(cpu, MSR_IA32_TSCDEADLINE, env->tsc_deadline);
-
-    ret = kvm_vcpu_ioctl(CPU(cpu), KVM_SET_MSRS, cpu->kvm_msr_buf);
+    ret = kvm_put_one_msr(cpu, MSR_IA32_TSCDEADLINE, env->tsc_deadline);
     if (ret < 0) {
         return ret;
     }
@@ -1567,11 +1572,8 @@ static int kvm_put_msr_feature_control(X86CPU *cpu)
         return 0;
     }
 
-    kvm_msr_buf_reset(cpu);
-    kvm_msr_entry_add(cpu, MSR_IA32_FEATURE_CONTROL,
-                      cpu->env.msr_ia32_feature_control);
-
-    ret = kvm_vcpu_ioctl(CPU(cpu), KVM_SET_MSRS, cpu->kvm_msr_buf);
+    ret = kvm_put_one_msr(cpu, MSR_IA32_FEATURE_CONTROL,
+                          cpu->env.msr_ia32_feature_control);
     if (ret < 0) {
         return ret;
     }