Re: [PATCH v5 03/12] KVM/x86: KVM_CAP_X86_GUEST_LBR

> + case KVM_CAP_X86_GUEST_LBR: > + r = -EINVAL; > + if (cap->args[0] && > + x86_perf_get_lbr_stack(>arch.lbr_stack)) { > + pr_err("Failed to enable the guest lbr feature\n"); Remove the pr_err. We don't want unprivileged users

[PATCH v5 03/12] KVM/x86: KVM_CAP_X86_GUEST_LBR

Introduce KVM_CAP_X86_GUEST_LBR to allow per-VM enabling of the guest lbr feature. Signed-off-by: Wei Wang Cc: Paolo Bonzini Cc: Andi Kleen Cc: Peter Zijlstra --- arch/x86/include/asm/kvm_host.h | 2 ++ arch/x86/kvm/x86.c | 15 +++ include/uapi/linux/kvm.h|