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Date: Thu, 6 Aug 2026 12:32:01 -0600 (MDT)
From: Paul Walmsley <pjw@kernel.org>
To: Guodong Xu <docular.xu@gmail.com>
cc: Jonathan Corbet <corbet@lwn.net>, Shuah Khan <skhan@linuxfoundation.org>, 
    Paul Walmsley <pjw@kernel.org>, Palmer Dabbelt <palmer@dabbelt.com>, 
    Albert Ou <aou@eecs.berkeley.edu>, Alexandre Ghiti <alex@ghiti.fr>, 
    Zong Li <zong.li@sifive.com>, Deepak Gupta <debug@rivosinc.com>, 
    Anup Patel <anup@brainfault.org>, Atish Patra <atish.patra@linux.dev>, 
    Rob Herring <robh@kernel.org>, Krzysztof Kozlowski <krzk+dt@kernel.org>, 
    Conor Dooley <conor+dt@kernel.org>, Yixun Lan <dlan@kernel.org>, 
    Chen Wang <unicorn_wang@outlook.com>, Inochi Amaoto <inochiama@gmail.com>, 
    Chen Wang <chen.wang@linux.dev>, linux-doc@vger.kernel.org, 
    linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org, 
    kvm@vger.kernel.org, kvm-riscv@lists.infradead.org, 
    Paul Walmsley <paul.walmsley@sifive.com>, Conor Dooley <conor@kernel.org>, 
    Jesse Taube <jtaubepe@redhat.com>, 
    Charlie Jenkins <thecharlesjenkins@gmail.com>, 
    Andrew Jones <andrew.jones@oss.qualcomm.com>, devicetree@vger.kernel.org, 
    spacemit@lists.linux.dev, sophgo@lists.linux.dev, 
    linux-kselftest@vger.kernel.org
Subject: Re: [PATCH v5 06/17] riscv: Add Ziccamoa, Ziccif, Ziccrse, and Za64rs
 to cpufeature and hwprobe
In-Reply-To: <20260701-rva23u64-hwprobe-v2-v5-6-2c61f94a695a@gmail.com>
Message-ID: <6aa9b348-931b-e358-6005-7e38f97092ef@kernel.org>
References: <20260701-rva23u64-hwprobe-v2-v5-0-2c61f94a695a@gmail.com> <20260701-rva23u64-hwprobe-v2-v5-6-2c61f94a695a@gmail.com>
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On Wed, 1 Jul 2026, Guodong Xu wrote:

> From: Andrew Jones <andrew.jones@oss.qualcomm.com>
> 
> Add Ziccamoa, Ziccif, and Za64rs to riscv_isa_ext[] so they can be
> parsed from devicetree/ACPI ISA strings. Ziccrse is already present
> in cpufeature; this patch only adds its hwprobe exposure.
> 
> Expose all four extensions via hwprobe through new bits in
> RISCV_HWPROBE_KEY_IMA_EXT_1 (RISCV_HWPROBE_EXT_ZICCAMOA, _ZICCIF,
> _ZICCRSE, _ZA64RS), so userspace can probe each of these
> RVA23U64-mandatory extensions individually.
> 
> Reviewed-by: Jesse Taube <jtaubepe@redhat.com>
> Signed-off-by: Andrew Jones <andrew.jones@oss.qualcomm.com>
> Signed-off-by: Guodong Xu <docular.xu@gmail.com>

Thanks, queued for v7.3.


- Paul