linux-kernel - Re: [PATCH v1 0/3] arm64: Support Cortex-X4 CPU for Perf Arm SPE

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Date:   Fri, 28 Jul 2023 11:38:11 -0300
From:   Arnaldo Carvalho de Melo <acme@...nel.org>
To:     Leo Yan <leo.yan@...aro.org>
Cc:     Ali Saidi <alisaidi@...zon.com>, catalin.marinas@....com,
        will@...nel.org, john.g.garry@...cle.com, james.clark@....com,
        mike.leach@...aro.org, peterz@...radead.org, mingo@...hat.com,
        mark.rutland@....com, alexander.shishkin@...ux.intel.com,
        jolsa@...nel.org, namhyung@...nel.org, irogers@...gle.com,
        adrian.hunter@...el.com, scott@...amperecomputing.com,
        maz@...nel.org, anshuman.khandual@....com, german.gomez@....com,
        renyu.zj@...ux.alibaba.com, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org, linux-perf-users@...r.kernel.org,
        fissure2010@...il.com
Subject: Re: [PATCH v1 0/3] arm64: Support Cortex-X4 CPU for Perf Arm SPE

Em Mon, Jul 24, 2023 at 07:30:13PM +0800, Leo Yan escreveu:
> Hi Ali,
> 
> On Fri, Jul 21, 2023 at 06:16:53PM +0000, Ali Saidi wrote:
> 
> > > This series support Cortex-X4 CPU in Perf Arm SPE.
> 
> [...]
> 
> > This looks good to me, but can we add the other cores that operate the
> > same way now too? Flipping through the TRMs A78, X3, V2, X1, A715,
> > A720, and A78C all have the same encodings. 
> 
> Thanks a lot for exploring more CPU variants which share the same data
> source packet format.
> 
> The latest Linux kernel have defined the CPU part number and MIDR for
> below CPU variants:
> 
> - A78
> - X1
> - A715
> - A78C
> 
> I would like to use a patch to support these CPUs in perf tool.  Given
> other CPU variants (X3/V2/A720) have not been supported in the kernel,
> and so far no one requests them, I would like leave them out.
> 
> Please let me know if this okay for you or not.
> 
> 
> > Reviewed-by: Ali Saidi <alisaidi@...zon.com>
> 
> Thanks for review, I will add your review tags in the new patch set.

Ok, waiting for the new patch set.

- Arnaldo