[2/3] properly save kvm system time msr registers

Commit Message

Glauber Costa Oct. 16, 2009, 7:27 p.m. UTC

None

Patch

diff --git a/qemu-kvm-x86.c b/qemu-kvm-x86.c
index 475151d..693f5b2 100644
--- a/qemu-kvm-x86.c
+++ b/qemu-kvm-x86.c
@@ -834,6 +834,12 @@  static int get_msr_entry(struct kvm_msr_entry *entry, CPUState *env)
         case MSR_VM_HSAVE_PA:
             env->vm_hsave     = entry->data;
             break;
+        case MSR_KVM_SYSTEM_TIME:
+            env->system_time_msr = entry->data;
+            break;
+        case MSR_KVM_WALL_CLOCK:
+            env->wall_clock_msr = entry->data;
+            break;
         default:
             printf("Warning unknown msr index 0x%x\n", entry->index);
             return 1;
@@ -842,9 +848,9 @@  static int get_msr_entry(struct kvm_msr_entry *entry, CPUState *env)
 }
 
 #ifdef TARGET_X86_64
-#define MSR_COUNT 10
+#define MSR_COUNT 12
 #else
-#define MSR_COUNT 6
+#define MSR_COUNT 8
 #endif
 
 static void set_v8086_seg(struct kvm_segment *lhs, const SegmentCache *rhs)
@@ -1002,6 +1008,8 @@  void kvm_arch_load_regs(CPUState *env)
         set_msr_entry(&msrs[n++], MSR_LSTAR  ,           env->lstar);
     }
 #endif
+    set_msr_entry(&msrs[n++], MSR_KVM_SYSTEM_TIME,  env->system_time_msr);
+    set_msr_entry(&msrs[n++], MSR_KVM_WALL_CLOCK,  env->wall_clock_msr);
 
     rc = kvm_set_msrs(env->kvm_cpu_state.vcpu_ctx, msrs, n);
     if (rc == -1)
@@ -1181,6 +1189,9 @@  void kvm_arch_save_regs(CPUState *env)
         msrs[n++].index = MSR_LSTAR;
     }
 #endif
+    msrs[n++].index = MSR_KVM_SYSTEM_TIME;
+    msrs[n++].index = MSR_KVM_WALL_CLOCK;
+
     rc = kvm_get_msrs(env->kvm_cpu_state.vcpu_ctx, msrs, n);
     if (rc == -1) {
         perror("kvm_get_msrs FAILED");
diff --git a/target-i386/cpu.h b/target-i386/cpu.h
index 278d3e3..4605fd2 100644
--- a/target-i386/cpu.h
+++ b/target-i386/cpu.h
@@ -667,6 +667,8 @@  typedef struct CPUX86State {
     target_ulong fmask;
     target_ulong kernelgsbase;
 #endif
+    uint64_t system_time_msr;
+    uint64_t wall_clock_msr;
 
     uint64_t tsc;
 
@@ -886,7 +888,7 @@  uint64_t cpu_get_tsc(CPUX86State *env);
 #define cpu_signal_handler cpu_x86_signal_handler
 #define cpu_list x86_cpu_list
 
-#define CPU_SAVE_VERSION 11
+#define CPU_SAVE_VERSION 12
 
 /* MMU modes definitions */
 #define MMU_MODE0_SUFFIX _kernel
diff --git a/target-i386/machine.c b/target-i386/machine.c
index 16d9c57..b364936 100644
--- a/target-i386/machine.c
+++ b/target-i386/machine.c
@@ -479,6 +479,9 @@  const VMStateDescription vmstate_cpu = {
         VMSTATE_UINT64_ARRAY_V(mce_banks, CPUState, MCE_BANKS_DEF *4, 10),
         /* rdtscp */
         VMSTATE_UINT64_V(tsc_aux, CPUState, 11),
+        /* KVM pvclock msr */
+        VMSTATE_UINT64_V(system_time_msr, CPUState, 12),
+        VMSTATE_UINT64_V(wall_clock_msr, CPUState, 12),
         VMSTATE_END_OF_LIST()
     }
 };