linux-kernel - Re: [PATCH v3 09/11] riscv: Add ISA extension parsing for Ziccrse

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Message-ID: <da5ba38a-8848-439e-b80a-3d6584111a78@sifive.com>
Date: Thu, 18 Jul 2024 19:53:11 -0500
From: Samuel Holland <samuel.holland@...ive.com>
To: Alexandre Ghiti <alexghiti@...osinc.com>
Cc: Jonathan Corbet <corbet@....net>, Paul Walmsley
 <paul.walmsley@...ive.com>, Palmer Dabbelt <palmer@...belt.com>,
 Albert Ou <aou@...s.berkeley.edu>, Conor Dooley <conor@...nel.org>,
 Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>,
 Andrea Parri <parri.andrea@...il.com>, Nathan Chancellor
 <nathan@...nel.org>, Peter Zijlstra <peterz@...radead.org>,
 Ingo Molnar <mingo@...hat.com>, Will Deacon <will@...nel.org>,
 Waiman Long <longman@...hat.com>, Boqun Feng <boqun.feng@...il.com>,
 Arnd Bergmann <arnd@...db.de>, Leonardo Bras <leobras@...hat.com>,
 Guo Ren <guoren@...nel.org>, linux-doc@...r.kernel.org,
 linux-kernel@...r.kernel.org, linux-riscv@...ts.infradead.org,
 linux-arch@...r.kernel.org
Subject: Re: [PATCH v3 09/11] riscv: Add ISA extension parsing for Ziccrse

Hi Alex,

On 2024-07-17 1:19 AM, Alexandre Ghiti wrote:
> Add support to parse the Ziccrse string in the riscv,isa string.
> 
> Signed-off-by: Alexandre Ghiti <alexghiti@...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 f71ddd2ca163..863b9b7d4a4f 100644
> --- a/arch/riscv/include/asm/hwcap.h
> +++ b/arch/riscv/include/asm/hwcap.h
> @@ -82,6 +82,7 @@
>  #define RISCV_ISA_EXT_ZACAS		73
>  #define RISCV_ISA_EXT_XANDESPMU		74
>  #define RISCV_ISA_EXT_ZABHA		75
> +#define RISCV_ISA_EXT_ZICCRSE		76
>  
>  #define RISCV_ISA_EXT_XLINUXENVCFG	127
>  
> diff --git a/arch/riscv/kernel/cpufeature.c b/arch/riscv/kernel/cpufeature.c
> index c125d82c894b..93d8cc7e232c 100644
> --- a/arch/riscv/kernel/cpufeature.c
> +++ b/arch/riscv/kernel/cpufeature.c
> @@ -306,6 +306,7 @@ const struct riscv_isa_ext_data riscv_isa_ext[] = {
>  	__RISCV_ISA_EXT_DATA(svnapot, RISCV_ISA_EXT_SVNAPOT),
>  	__RISCV_ISA_EXT_DATA(svpbmt, RISCV_ISA_EXT_SVPBMT),
>  	__RISCV_ISA_EXT_DATA(xandespmu, RISCV_ISA_EXT_XANDESPMU),
> +	__RISCV_ISA_EXT_DATA(ziccrse, RISCV_ISA_EXT_ZICCRSE),

Please sort this entry per the comment at the beginning of the array.

Regards,
Samuel

>  };
>  
>  const size_t riscv_isa_ext_count = ARRAY_SIZE(riscv_isa_ext);