linux-kernel - Re: [PATCH V2 00/16] arm64/cpufeature: Introduce ID_PFR2, ID_DFR1, ID

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Date:   Wed, 29 Apr 2020 22:26:15 +0100
From:   Will Deacon <will@...nel.org>
To:     Anshuman Khandual <anshuman.khandual@....com>
Cc:     linux-arm-kernel@...ts.infradead.org, catalin.marinas@....com,
        mark.rutland@....com, maz@...nel.org, suzuki.poulose@....com,
        James Morse <james.morse@....com>,
        kvmarm@...ts.cs.columbia.edu, linux-kernel@...r.kernel.org
Subject: Re: [PATCH V2 00/16] arm64/cpufeature: Introduce ID_PFR2, ID_DFR1,
 ID_MMFR5 and other changes

Hi Anshuman,

On Wed, Apr 29, 2020 at 03:07:15PM +0530, Anshuman Khandual wrote:
> On 04/14/2020 03:18 PM, Anshuman Khandual wrote:
> > This series is primarily motivated from an adhoc list from Mark Rutland
> > during our previous ID_ISAR6 discussion [1]. The current proposal also
> > accommodates some more suggestions from Will and Suzuki.
> > 
> > This series adds missing 32 bit system registers (ID_PFR2, ID_DFR1 and
> > ID_MMFR5), adds missing features bits on all existing system registers
> > (32 and 64 bit) and some other miscellaneous changes. While here it also
> > includes a patch which does macro replacement for various open bits shift
> > encodings for various CPU ID registers. There is a slight re-order of the
> > patches here as compared to the previous version (V1).
> > 
> > This series is based on v5.7-rc1. All feature bits enabled here can be
> > referred in ARM DDI 0487F.a specification. Though I have tried to select
> > appropriate values for each new feature being added here, there might be
> > some inconsistencies (or mistakes). In which case, please do let me know
> > if anything needs to change. Thank you.
> > 
> > [1] https://patchwork.kernel.org/patch/11287805/
> > 
> > Cc: Catalin Marinas <catalin.marinas@....com>
> > Cc: Will Deacon <will@...nel.org>
> > Cc: Mark Rutland <mark.rutland@....com> 
> > Cc: Marc Zyngier <maz@...nel.org>
> > Cc: James Morse <james.morse@....com>
> > Cc: Suzuki K Poulose <suzuki.poulose@....com>
> > Cc: kvmarm@...ts.cs.columbia.edu
> > Cc: linux-arm-kernel@...ts.infradead.org
> > Cc: linux-kernel@...r.kernel.org
> > 
> > Changes in V2:
> > 
> > - Added Suggested-by tag from Mark Rutland for all changes he had proposed
> > - Added comment for SpecSEI feature on why it is HIGHER_SAFE per Suzuki
> > - Added a patch which makes ID_AA64DFR0_DOUBLELOCK a signed feature per Suzuki
> > - Added ID_DFR1 and ID_MMFR5 system register definitions per Will
> > - Added remaining features bits for relevant 64 bit system registers per Will
> > - Changed commit message on [PATCH 5/7] regarding TraceFilt feature per Suzuki
> > - Changed ID_PFR2.CSV3 (FTR_STRICT -> FTR_NONSTRICT) as 64 bit registers per Will
> > - Changed ID_PFR0.CSV2 (FTR_STRICT -> FTR_NONSTRICT) as 64 bit registers per Will 
> > - Changed some commit messages
>
> Just a gentle ping. I am wondering if you had a chance to glance
> through this updated series.

Please can you resend based on for-next/cpufeature?

Will