diff mbox series

[for-9.1,4/7] target/i386/kvm: Save/load MSRs of new kvmclock (KVM_FEATURE_CLOCKSOURCE2)

Message ID 20240329101954.3954987-5-zhao1.liu@linux.intel.com
State New
Headers show
Series target/i386/kvm: Cleanup the kvmclock feature name | expand

Commit Message

Zhao Liu March 29, 2024, 10:19 a.m. UTC 
From: Zhao Liu <zhao1.liu@intel.com>

MSR_KVM_SYSTEM_TIME_NEW and MSR_KVM_WALL_CLOCK_NEW are bound to new
kvmclock (KVM_FEATURE_CLOCKSOURCE2).

Add the save/load support for these 2 MSRs.

Signed-off-by: Zhao Liu <zhao1.liu@intel.com>
---
 target/i386/cpu.h     |  2 ++
 target/i386/kvm/kvm.c | 16 ++++++++++++++++
 2 files changed, 18 insertions(+)
diff mbox series

Patch

diff --git a/target/i386/cpu.h b/target/i386/cpu.h
index b1b8d11cb0fe..b339f9ce454f 100644
--- a/target/i386/cpu.h
+++ b/target/i386/cpu.h
@@ -1741,6 +1741,8 @@  typedef struct CPUArchState {
 
     uint64_t system_time_msr;
     uint64_t wall_clock_msr;
+    uint64_t system_time_new_msr;
+    uint64_t wall_clock_new_msr;
     uint64_t steal_time_msr;
     uint64_t async_pf_en_msr;
     uint64_t async_pf_int_msr;
diff --git a/target/i386/kvm/kvm.c b/target/i386/kvm/kvm.c
index 498580d60c3b..4a6bf0581859 100644
--- a/target/i386/kvm/kvm.c
+++ b/target/i386/kvm/kvm.c
@@ -3323,6 +3323,12 @@  static int kvm_put_msrs(X86CPU *cpu, int level)
             kvm_msr_entry_add(cpu, MSR_KVM_SYSTEM_TIME, env->system_time_msr);
             kvm_msr_entry_add(cpu, MSR_KVM_WALL_CLOCK, env->wall_clock_msr);
         }
+        if (env->features[FEAT_KVM] & CPUID_FEAT_KVM_CLOCK2) {
+            kvm_msr_entry_add(cpu, MSR_KVM_SYSTEM_TIME_NEW,
+                              env->system_time_new_msr);
+            kvm_msr_entry_add(cpu, MSR_KVM_WALL_CLOCK_NEW,
+                              env->wall_clock_new_msr);
+        }
         if (env->features[FEAT_KVM] & CPUID_FEAT_KVM_ASYNCPF_INT) {
             kvm_msr_entry_add(cpu, MSR_KVM_ASYNC_PF_INT, env->async_pf_int_msr);
         }
@@ -3790,6 +3796,10 @@  static int kvm_get_msrs(X86CPU *cpu)
         kvm_msr_entry_add(cpu, MSR_KVM_SYSTEM_TIME, 0);
         kvm_msr_entry_add(cpu, MSR_KVM_WALL_CLOCK, 0);
     }
+    if (env->features[FEAT_KVM] & CPUID_FEAT_KVM_CLOCK2) {
+        kvm_msr_entry_add(cpu, MSR_KVM_SYSTEM_TIME_NEW, 0);
+        kvm_msr_entry_add(cpu, MSR_KVM_WALL_CLOCK_NEW, 0);
+    }
     if (env->features[FEAT_KVM] & CPUID_FEAT_KVM_ASYNCPF_INT) {
         kvm_msr_entry_add(cpu, MSR_KVM_ASYNC_PF_INT, 0);
     }
@@ -4029,6 +4039,12 @@  static int kvm_get_msrs(X86CPU *cpu)
         case MSR_KVM_WALL_CLOCK:
             env->wall_clock_msr = msrs[i].data;
             break;
+        case MSR_KVM_SYSTEM_TIME_NEW:
+            env->system_time_new_msr = msrs[i].data;
+            break;
+        case MSR_KVM_WALL_CLOCK_NEW:
+            env->wall_clock_new_msr = msrs[i].data;
+            break;
         case MSR_MCG_STATUS:
             env->mcg_status = msrs[i].data;
             break;