linux-kernel - Re: [PATCH 4/9] riscv: add ISA extension parsing for Zam

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Message-ID: <20231214-acts-udder-37d0162e4f61@spud>
Date:   Thu, 14 Dec 2023 14:14:41 +0000
From:   Conor Dooley <conor@...nel.org>
To:     Clément Léger <cleger@...osinc.com>
Cc:     linux-doc@...r.kernel.org, linux-riscv@...ts.infradead.org,
        linux-kernel@...r.kernel.org, devicetree@...r.kernel.org,
        Jonathan Corbet <corbet@....net>,
        Paul Walmsley <paul.walmsley@...ive.com>,
        Palmer Dabbelt <palmer@...belt.com>,
        Albert Ou <aou@...s.berkeley.edu>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Robbin Ehn <rehn@...osinc.com>
Subject: Re: [PATCH 4/9] riscv: add ISA extension parsing for Zam

On Wed, Dec 13, 2023 at 12:33:00PM +0100, Clément Léger wrote:
> Add parsing for Zam ISA extension which is part of the riscv-isa manual
> but was not added to ISA parsing up to now.

This does not appear to be frozen or ratified, NAK.

Cheers,
Conor.

> 
> Signed-off-by: Clément Léger <cleger@...osinc.com>
> ---
>  arch/riscv/include/asm/hwcap.h | 1 +
>  arch/riscv/kernel/cpufeature.c | 1 +
>  2 files changed, 2 insertions(+)
> 
> diff --git a/arch/riscv/include/asm/hwcap.h b/arch/riscv/include/asm/hwcap.h
> index 3b31efe2f716..016faa08c8ba 100644
> --- a/arch/riscv/include/asm/hwcap.h
> +++ b/arch/riscv/include/asm/hwcap.h
> @@ -85,6 +85,7 @@
>  #define RISCV_ISA_EXT_ZVFHMIN		70
>  #define RISCV_ISA_EXT_ZFA		71
>  #define RISCV_ISA_EXT_ZTSO		72
> +#define RISCV_ISA_EXT_ZAM		73
>  
>  #define RISCV_ISA_EXT_MAX		128
>  #define RISCV_ISA_EXT_INVALID		U32_MAX
> diff --git a/arch/riscv/kernel/cpufeature.c b/arch/riscv/kernel/cpufeature.c
> index 3eb48a0eecb3..e999320398b7 100644
> --- a/arch/riscv/kernel/cpufeature.c
> +++ b/arch/riscv/kernel/cpufeature.c
> @@ -259,6 +259,7 @@ const struct riscv_isa_ext_data riscv_isa_ext[] = {
>  	__RISCV_ISA_EXT_DATA(zihintntl, RISCV_ISA_EXT_ZIHINTNTL),
>  	__RISCV_ISA_EXT_DATA(zihintpause, RISCV_ISA_EXT_ZIHINTPAUSE),
>  	__RISCV_ISA_EXT_DATA(zihpm, RISCV_ISA_EXT_ZIHPM),
> +	__RISCV_ISA_EXT_DATA(zam, RISCV_ISA_EXT_ZAM),
>  	__RISCV_ISA_EXT_DATA(zfa, RISCV_ISA_EXT_ZFA),
>  	__RISCV_ISA_EXT_DATA(zfh, RISCV_ISA_EXT_ZFH),
>  	__RISCV_ISA_EXT_DATA(zfhmin, RISCV_ISA_EXT_ZFHMIN),
> -- 
> 2.43.0
> 

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