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Commit 11c6bffa authored by Glauber Costa's avatar Glauber Costa Committed by Avi Kivity
Browse files

KVM: x86: change msr numbers for kvmclock



Avi pointed out a while ago that those MSRs falls into the pentium
PMU range. So the idea here is to add new ones, and after a while,
deprecate the old ones.

Signed-off-by: default avatarGlauber Costa <glommer@redhat.com>
Acked-by: default avatarZachary Amsden <zamsden@redhat.com>
Signed-off-by: default avatarMarcelo Tosatti <mtosatti@redhat.com>
parent 489fb490
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+4 −0
Original line number Diff line number Diff line
@@ -20,6 +20,10 @@
#define MSR_KVM_WALL_CLOCK  0x11
#define MSR_KVM_SYSTEM_TIME 0x12

/* Custom MSRs falls in the range 0x4b564d00-0x4b564dff */
#define MSR_KVM_WALL_CLOCK_NEW  0x4b564d00
#define MSR_KVM_SYSTEM_TIME_NEW 0x4b564d01

#define KVM_MAX_MMU_OP_BATCH           32

/* Operations for KVM_HC_MMU_OP */
+6 −1
Original line number Diff line number Diff line
@@ -664,9 +664,10 @@ static inline u32 bit(int bitno)
 * kvm-specific. Those are put in the beginning of the list.
 */

#define KVM_SAVE_MSRS_BEGIN	5
#define KVM_SAVE_MSRS_BEGIN	7
static u32 msrs_to_save[] = {
	MSR_KVM_SYSTEM_TIME, MSR_KVM_WALL_CLOCK,
	MSR_KVM_SYSTEM_TIME_NEW, MSR_KVM_WALL_CLOCK_NEW,
	HV_X64_MSR_GUEST_OS_ID, HV_X64_MSR_HYPERCALL,
	HV_X64_MSR_APIC_ASSIST_PAGE,
	MSR_IA32_SYSENTER_CS, MSR_IA32_SYSENTER_ESP, MSR_IA32_SYSENTER_EIP,
@@ -1193,10 +1194,12 @@ int kvm_set_msr_common(struct kvm_vcpu *vcpu, u32 msr, u64 data)
	case MSR_IA32_MISC_ENABLE:
		vcpu->arch.ia32_misc_enable_msr = data;
		break;
	case MSR_KVM_WALL_CLOCK_NEW:
	case MSR_KVM_WALL_CLOCK:
		vcpu->kvm->arch.wall_clock = data;
		kvm_write_wall_clock(vcpu->kvm, data);
		break;
	case MSR_KVM_SYSTEM_TIME_NEW:
	case MSR_KVM_SYSTEM_TIME: {
		if (vcpu->arch.time_page) {
			kvm_release_page_dirty(vcpu->arch.time_page);
@@ -1468,9 +1471,11 @@ int kvm_get_msr_common(struct kvm_vcpu *vcpu, u32 msr, u64 *pdata)
		data = vcpu->arch.efer;
		break;
	case MSR_KVM_WALL_CLOCK:
	case MSR_KVM_WALL_CLOCK_NEW:
		data = vcpu->kvm->arch.wall_clock;
		break;
	case MSR_KVM_SYSTEM_TIME:
	case MSR_KVM_SYSTEM_TIME_NEW:
		data = vcpu->arch.time;
		break;
	case MSR_IA32_P5_MC_ADDR: