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Message-ID: <6690a921-5df7-5c31-e115-96b89cc5057e@redhat.com>
Date: Tue, 1 Feb 2022 13:26:02 +0100
From: Paolo Bonzini <pbonzini@...hat.com>
To: Like Xu <like.xu.linux@...il.com>,
Jim Mattson <jmattson@...gle.com>
Cc: Sean Christopherson <seanjc@...gle.com>,
Vitaly Kuznetsov <vkuznets@...hat.com>,
Wanpeng Li <wanpengli@...cent.com>,
Joerg Roedel <joro@...tes.org>, kvm@...r.kernel.org,
linux-kernel@...r.kernel.org, Like Xu <likexu@...cent.com>
Subject: Re: [PATCH kvm/queue v2 1/3] KVM: x86/pmu: Replace
pmu->available_event_types with a new BITMAP
On 1/17/22 09:53, Like Xu wrote:
> +/* Mapping between CPUID 0x0A.EBX bit vector and enum perf_hw_id. */
> +static inline int map_unavail_bit_to_perf_hw_id(int bit)
> +{
> + switch (bit) {
> + case 0:
> + case 1:
> + return bit;
> + case 2:
> + return PERF_COUNT_HW_BUS_CYCLES;
> + case 3:
> + case 4:
> + case 5:
> + case 6:
> + return --bit;
> + }
> +
> + return PERF_COUNT_HW_MAX;
> +}
> +
Please use an array here (e.g. cpuid_event_to_perf_hw_id_map[]).
Paolo
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