On 2015/11/11 23:15, Paolo Bonzini wrote:
On 23/10/2015 11:15, Jian Zhou wrote:data *msr_info) } break; case MSR_IA32_DEBUGCTLMSR: - if (!data) { - /* We support the non-activated case already */ - break; - } else if (data & ~(DEBUGCTLMSR_LBR | DEBUGCTLMSR_BTF)) { - /* Values other than LBR and BTF are vendor-specific, - thus reserved and should throw a #GP */ + supported = DEBUGCTLMSR_LBR | DEBUGCTLMSR_BTF | + DEBUGCTLMSR_FREEZE_LBRS_ON_PMI; + + if (data & ~supported) { + /* + * Values other than LBR/BTF/FREEZE_LBRS_ON_PMI + * are not supported, thus reserved and should throw a #GP + */ + vcpu_unimpl(vcpu, "%s: MSR_IA32_DEBUGCTLMSR 0x%llx, nop\n", + __func__, data); return 1; } - vcpu_unimpl(vcpu, "%s: MSR_IA32_DEBUGCTLMSR 0x%llx, nop\n", - __func__, data); + if (kvm_x86_ops->set_debugctlmsr) { + if (kvm_x86_ops->set_debugctlmsr(vcpu, data)) + return 1; + } + else + return 1; + break; case 0x200 ... 0x2ff: return kvm_mtrr_set_msr(vcpu, msr, data); @@ -2078,6 +2090,33 @@ int kvm_set_msr_common(struct kvm_vcpu *vcpu, struct msr_data *msr_info) vcpu_unimpl(vcpu, "disabled perfctr wrmsr: " "0x%x data 0x%llx\n", msr, data); break; + case MSR_LBR_STATUS: + if (kvm_x86_ops->set_debugctlmsr) { + vcpu->arch.lbr_status = (data == 0) ? 0 : 1; + if (data) + kvm_x86_ops->set_debugctlmsr(vcpu, + DEBUGCTLMSR_LBR | DEBUGCTLMSR_FREEZE_LBRS_ON_PMI); + } else + vcpu_unimpl(vcpu, "lbr is disabled, ignored wrmsr: " + "0x%x data 0x%llx\n", msr, data); + break; + case MSR_LBR_SELECT: + case MSR_LBR_TOS: + case MSR_PENTIUM4_LER_FROM_LIP: + case MSR_PENTIUM4_LER_TO_LIP: + case MSR_PENTIUM4_LBR_TOS: + case MSR_IA32_LASTINTFROMIP: + case MSR_IA32_LASTINTTOIP: + case MSR_LBR_CORE2_FROM ... MSR_LBR_CORE2_FROM + 0x7: + case MSR_LBR_CORE2_TO ... MSR_LBR_CORE2_TO + 0x7: + case MSR_LBR_NHM_FROM ... MSR_LBR_NHM_FROM + 0x1f: + case MSR_LBR_NHM_TO ... MSR_LBR_NHM_TO + 0x1f: + if (kvm_x86_ops->set_lbr_msr) + kvm_x86_ops->set_lbr_msr(vcpu, msr, data); + else + vcpu_unimpl(vcpu, "lbr is disabled, ignored wrmsr: " + "0x%x data 0x%llx\n", msr, data);I think you can just do this in kvm_x86_ops->set_msr. The old implementation for DEBUGCTL MSR can be moved to svm.c.
I think you mean "moved to vmx.c"? Thanks, Jian
Paolo .
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