linux-kernel - Re: [PATCH] arm64/perf: Replace '0xf' instances with ID_AA64DFR0_PMUVER_IMP

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Message-ID: <995fce58-d1fa-9f0f-b8bd-05e689330482@arm.com>
Date:   Tue, 10 Aug 2021 20:31:05 +0530
From:   Anshuman Khandual <anshuman.khandual@....com>
To:     Will Deacon <will@...nel.org>
Cc:     linux-arm-kernel@...ts.infradead.org,
        Catalin Marinas <catalin.marinas@....com>,
        Mark Rutland <mark.rutland@....com>,
        Peter Zijlstra <peterz@...radead.org>,
        Marc Zyngier <maz@...nel.org>,
        linux-perf-users@...r.kernel.org, kvmarm@...ts.cs.columbia.edu,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] arm64/perf: Replace '0xf' instances with
 ID_AA64DFR0_PMUVER_IMP_DEF



On 8/10/21 7:01 PM, Will Deacon wrote:
> On Tue, Aug 10, 2021 at 10:36:38AM +0530, Anshuman Khandual wrote:
>> ID_AA64DFR0_PMUVER_IMP_DEF which indicate implementation defined PMU, never
>> actually gets used although there are '0xf' instances scattered all around.
>> Just do the macro replacement to improve readability.
>>
>> Cc: Catalin Marinas <catalin.marinas@....com>
>> Cc: Will Deacon <will@...nel.org>
>> Cc: Mark Rutland <mark.rutland@....com>
>> Cc: Peter Zijlstra <peterz@...radead.org>
>> Cc: Marc Zyngier <maz@...nel.org>
>> Cc: linux-perf-users@...r.kernel.org
>> Cc: linux-arm-kernel@...ts.infradead.org
>> Cc: kvmarm@...ts.cs.columbia.edu
>> Cc: linux-kernel@...r.kernel.org
>> Signed-off-by: Anshuman Khandual <anshuman.khandual@....com>
>> ---
>> This applies on v5.14-rc5
>>
>>  arch/arm64/include/asm/cpufeature.h | 2 +-
>>  arch/arm64/kernel/perf_event.c      | 2 +-
>>  arch/arm64/kvm/perf.c               | 2 +-
>>  arch/arm64/kvm/pmu-emul.c           | 6 +++---
>>  4 files changed, 6 insertions(+), 6 deletions(-)
> 
> Please can you split this with the KVM parts in their own patch?

Sure, will do.