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| author | Glauber Costa <glommer@redhat.com> | 2010-05-11 12:17:41 -0400 |
|---|---|---|
| committer | Avi Kivity <avi@redhat.com> | 2010-05-19 11:41:01 +0300 |
| commit | 11c6bffa42b85e703c21a1d2372dce7262daca8e (patch) | |
| tree | 54524f3693895ccfa95b3e28a75cd2c4bb55969b /arch/x86 | |
| parent | 489fb490dbf8dab0249ad82b56688ae3842a79e8 (diff) | |
| download | linux-stable-11c6bffa42b85e703c21a1d2372dce7262daca8e.tar.gz linux-stable-11c6bffa42b85e703c21a1d2372dce7262daca8e.tar.bz2 linux-stable-11c6bffa42b85e703c21a1d2372dce7262daca8e.zip | |
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: Glauber Costa <glommer@redhat.com>
Acked-by: Zachary Amsden <zamsden@redhat.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Diffstat (limited to 'arch/x86')
| -rw-r--r-- | arch/x86/include/asm/kvm_para.h | 4 | ||||
| -rw-r--r-- | arch/x86/kvm/x86.c | 7 |
2 files changed, 10 insertions, 1 deletions
diff --git a/arch/x86/include/asm/kvm_para.h b/arch/x86/include/asm/kvm_para.h index ffae1420e7d7..97348082782a 100644 --- a/arch/x86/include/asm/kvm_para.h +++ b/arch/x86/include/asm/kvm_para.h @@ -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 */ diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c index fe6d126633d8..73d342c69ed4 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -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: |