From: Pankaj Gupta <pankaj.gupta@xxxxxxxxxxxxxxx> Guest tries to enable LBR (last branch/interrupt/exception) repeatedly, thus spamming the host kernel logs. As MSR_IA32_DEBUGCTLMSR is not emulated by KVM, its better to add the error log only with "report_ignored_msrs". Signed-off-by: Pankaj Gupta <pankaj.gupta@xxxxxxxxxxxxxxx> --- arch/x86/kvm/x86.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c index f5ede41bf9e6..99c69ae43c69 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -3063,9 +3063,9 @@ int kvm_set_msr_common(struct kvm_vcpu *vcpu, struct msr_data *msr_info) /* Values other than LBR and BTF are vendor-specific, thus reserved and should throw a #GP */ return 1; - } - vcpu_unimpl(vcpu, "%s: MSR_IA32_DEBUGCTLMSR 0x%llx, nop\n", - __func__, data); + } else if (report_ignored_msrs) + vcpu_unimpl(vcpu, "%s: MSR_IA32_DEBUGCTLMSR 0x%llx, nop\n", + __func__, data); break; case 0x200 ... 0x2ff: return kvm_mtrr_set_msr(vcpu, msr, data); -- 2.20.1
