linux-kernel - Re: [PATCH 1/2] arm64: Add Cortex-X2 CPU part definition

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Message-ID: <CAK8P3a1cDF=jEVGchU8LNBdjdtROmHHHpebOASreR=WOuZ4Z1A@mail.gmail.com>
Date:   Wed, 12 Jan 2022 11:50:54 +0100
From:   Arnd Bergmann <arnd@...db.de>
To:     Anshuman Khandual <anshuman.khandual@....com>
Cc:     Linux ARM <linux-arm-kernel@...ts.infradead.org>,
        Catalin Marinas <catalin.marinas@....com>,
        Will Deacon <will@...nel.org>,
        Mathieu Poirier <mathieu.poirier@...aro.org>,
        Suzuki Poulose <suzuki.poulose@....com>,
        coresight@...ts.linaro.org,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 1/2] arm64: Add Cortex-X2 CPU part definition

On Wed, Jan 12, 2022 at 10:34 AM Anshuman Khandual
<anshuman.khandual@....com> wrote:
>
> Add the CPU Partnumbers for the new Arm designs.
>
> Cc: Catalin Marinas <catalin.marinas@....com>
> Cc: Will Deacon <will@...nel.org>
> Cc: Suzuki Poulose <suzuki.poulose@....com>
> Cc: linux-arm-kernel@...ts.infradead.org
> Cc: linux-kernel@...r.kernel.org
> Signed-off-by: Anshuman Khandual <anshuman.khandual@....com>
> ---
>  arch/arm64/include/asm/cputype.h | 2 ++
>  1 file changed, 2 insertions(+)
>
> diff --git a/arch/arm64/include/asm/cputype.h b/arch/arm64/include/asm/cputype.h
> index 19b8441aa8f2..657eeb06c784 100644
> --- a/arch/arm64/include/asm/cputype.h
> +++ b/arch/arm64/include/asm/cputype.h
> @@ -74,6 +74,7 @@
>  #define ARM_CPU_PART_NEOVERSE_N1       0xD0C
>  #define ARM_CPU_PART_CORTEX_A77                0xD0D
>  #define ARM_CPU_PART_CORTEX_A710       0xD47
> +#define ARM_CPU_PART_CORTEX_X2         0xD48
>  #define ARM_CPU_PART_NEOVERSE_N2       0xD49

No objections to the patch, but would it be possible to just add all the missing
ones here to the degree that they are known already? I don't see any entries for
Cortex-A34, Cortex-A65AE, Cortex-A78, Cortex-A78C, Cortex-A78AE,
Neoverse-E1, Neoverse-V1, Cortex-X1, Cortex-X2, Cortex-A510, Cortex-A710
and Cortex-R82 among the Arm-designed cores that can run Linux, and there
are probably others that I missed going through the list.

        Arnd