linux-kernel - Re: [PATCH v2 1/6] riscv: add ISA extension parsing for Ztso

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Date: Wed, 10 Jan 2024 11:32:09 +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>,
	Gianluca Guida <gianluca@...osinc.com>
Subject: Re: [PATCH v2 1/6] riscv: add ISA extension parsing for Ztso

On Wed, Dec 20, 2023 at 04:57:17PM +0100, Clément Léger wrote:
> Add support to parse the Ztso string in the riscv,isa string. The
> bindings already supports it but not the ISA parsing code.
> 
> Signed-off-by: Clément Léger <cleger@...osinc.com>

Reviewed-by: Conor Dooley <conor.dooley@...rochip.com>

Cheers,
Conor.

> ---
>  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 2438d4685da6..3b31efe2f716 100644
> --- a/arch/riscv/include/asm/hwcap.h
> +++ b/arch/riscv/include/asm/hwcap.h
> @@ -84,6 +84,7 @@
>  #define RISCV_ISA_EXT_ZVFH		69
>  #define RISCV_ISA_EXT_ZVFHMIN		70
>  #define RISCV_ISA_EXT_ZFA		71
> +#define RISCV_ISA_EXT_ZTSO		72
>  
>  #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 dc0ab3e97cd2..3eb48a0eecb3 100644
> --- a/arch/riscv/kernel/cpufeature.c
> +++ b/arch/riscv/kernel/cpufeature.c
> @@ -279,6 +279,7 @@ const struct riscv_isa_ext_data riscv_isa_ext[] = {
>  	__RISCV_ISA_EXT_DATA(zkt, RISCV_ISA_EXT_ZKT),
>  	__RISCV_ISA_EXT_DATA(zksed, RISCV_ISA_EXT_ZKSED),
>  	__RISCV_ISA_EXT_DATA(zksh, RISCV_ISA_EXT_ZKSH),
> +	__RISCV_ISA_EXT_DATA(ztso, RISCV_ISA_EXT_ZTSO),
>  	__RISCV_ISA_EXT_SUPERSET(zvbb, RISCV_ISA_EXT_ZVBB, riscv_zvbb_exts),
>  	__RISCV_ISA_EXT_DATA(zvbc, RISCV_ISA_EXT_ZVBC),
>  	__RISCV_ISA_EXT_DATA(zvfh, RISCV_ISA_EXT_ZVFH),
> -- 
> 2.43.0
> 

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