Re: [PATCH v4 07/16] riscv: Add B to hwcap and hwprobe

Conor Dooley <[email protected]> Fri, 12 Jun 2026 09:12:30 +0100

Newsgroups	dev.linux.lists.sophgo,dev.linux.lists.spacemit,org.infradead.lists.kvm-riscv,org.infradead.lists.linux-riscv,org.kernel.vger.kvm,org.kernel.vger.linux-devicetree,org.kernel.vger.linux-doc,org.kernel.vger.linux-kernel,org.kernel.vger.linux-kselftest
Message-ID	<20260612-unsorted-sequester-6a4ec6b9d583@wendy>

On Thu, Jun 11, 2026 at 04:12:44PM -0400, Guodong Xu wrote:
> From: Andrew Jones <[email protected]>
> 
> Add B to hwcap and ensure when B is present that Zba, Zbb, and Zbs
> are all set. Also expose B via hwprobe (RISCV_HWPROBE_EXT_B in
> RISCV_HWPROBE_KEY_IMA_EXT_1) so that userspace can probe B directly,
> mirroring the F/D/C/V pattern where each is reported via both hwcap
> and hwprobe.
> 
> Signed-off-by: Andrew Jones <[email protected]>
> [Add B to hwprobe]
> Signed-off-by: Guodong Xu <[email protected]>

Reviewed-by: Conor Dooley <[email protected]>

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