Re: [PATCH 3/4] KVM: x86/pmu: Reuse find_perf_hw_id() and drop find_fixed_event()

[Paolo Bonzini]

On 11/16/21 13:20, Like Xu wrote:
> +	/* return PERF_COUNT_HW_MAX as AMD doesn't have fixed events */
> +	if (pmc_is_fixed(pmc))
> +		return PERF_COUNT_HW_MAX;
> +

This should have a WARN_ON, since reprogram_fixed_counter will never see 
an enabled fixed counter on AMD.

Paolo