Re: [PATCH v5 06/17] riscv: Add Ziccamoa, Ziccif, Ziccrse, and Za64rs to cpufeature and hwprobe

[Paul Walmsley]

On Wed, 1 Jul 2026, Guodong Xu wrote:

> From: Andrew Jones <andrew.jones@xxxxxxxxxxxxxxxx>
> 
> 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@xxxxxxxxxx>
> Signed-off-by: Andrew Jones <andrew.jones@xxxxxxxxxxxxxxxx>
> Signed-off-by: Guodong Xu <docular.xu@xxxxxxxxx>

Thanks, queued for v7.3.


- Paul