diff options
| author | Xiao Guangrong <guangrong.xiao@linux.intel.com> | 2015-06-15 16:55:23 +0800 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2015-06-19 17:16:27 +0200 |
| commit | eb839917a75207b89799e3500211163cb6de0dea (patch) | |
| tree | 6992e709b95ec5cbabc929d59e206020bc8c3234 /arch/x86/kvm/mtrr.c | |
| parent | ff53604b40b439cbb235f89bda99839ca81d3b9d (diff) | |
| download | linux-eb839917a75207b89799e3500211163cb6de0dea.tar.bz2 | |
KVM: MTRR: handle MSR_MTRRcap in kvm_mtrr_get_msr
MSR_MTRRcap is a MTRR msr so move the handler to the common place, also
add some comments to make the hard code more readable
Signed-off-by: Xiao Guangrong <guangrong.xiao@linux.intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'arch/x86/kvm/mtrr.c')
| -rw-r--r-- | arch/x86/kvm/mtrr.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/arch/x86/kvm/mtrr.c b/arch/x86/kvm/mtrr.c index fb2f7e10e8bc..a05846a524d9 100644 --- a/arch/x86/kvm/mtrr.c +++ b/arch/x86/kvm/mtrr.c @@ -199,6 +199,18 @@ int kvm_mtrr_get_msr(struct kvm_vcpu *vcpu, u32 msr, u64 *pdata) { u64 *p = (u64 *)&vcpu->arch.mtrr_state.fixed_ranges; + /* MSR_MTRRcap is a readonly MSR. */ + if (msr == MSR_MTRRcap) { + /* + * SMRR = 0 + * WC = 1 + * FIX = 1 + * VCNT = KVM_NR_VAR_MTRR + */ + *pdata = 0x500 | KVM_NR_VAR_MTRR; + return 0; + } + if (!msr_mtrr_valid(msr)) return 1; |