diff mbox series

[4/6] target/i386/kvm: Save/load MSRs of kvmclock2 (KVM_FEATURE_CLOCKSOURCE2)

Message ID 20240426100716.2111688-5-zhao1.liu@intel.com (mailing list archive)
State New, archived
Headers show
Series target/i386: Misc cleanup on KVM PV defs and outdated comments | expand

Commit Message

Zhao Liu April 26, 2024, 10:07 a.m. UTC 
MSR_KVM_SYSTEM_TIME_NEW and MSR_KVM_WALL_CLOCK_NEW are bound to
kvmclock2 (KVM_FEATURE_CLOCKSOURCE2).

Add the save/load support for these 2 MSR just like kvmclock 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 caa32a91346b..c5cf7734b202 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 75d2091c4f8c..ee0767e8f501 100644
--- a/target/i386/kvm/kvm.c
+++ b/target/i386/kvm/kvm.c
@@ -3376,6 +3376,12 @@  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_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_KVM_ASYNCPF_INT) {
             kvm_msr_entry_add(cpu, MSR_KVM_ASYNC_PF_INT, env->async_pf_int_msr);
         }
@@ -3843,6 +3849,10 @@  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_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_KVM_ASYNCPF_INT) {
         kvm_msr_entry_add(cpu, MSR_KVM_ASYNC_PF_INT, 0);
     }
@@ -4082,6 +4092,12 @@  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;