[PATCH] riscv: cpufeature: Fix Zk bundled extension missing Zknh

[Paul Walmsley]

On Tue, 23 Dec 2025, Guodong Xu wrote:

> The Zk extension is a bundle consisting of Zkn, Zkr, and Zkt. The Zkn
> extension itself is a bundle consisting of Zbkb, Zbkc, Zbkx, Zknd, Zkne,
> and Zknh.
> 
> The current implementation of riscv_zk_bundled_exts manually listed
> the dependencies but missed RISCV_ISA_EXT_ZKNH.
> 
> Fix this by introducing a RISCV_ISA_EXT_ZKN macro that lists the Zkn
> components and using it in both riscv_zk_bundled_exts and
> riscv_zkn_bundled_exts.
> 
> This adds the missing Zknh extension to Zk and reduces code duplication.
> 
> Fixes: 0d8295ed975b ("riscv: add ISA extension parsing for scalar crypto")
> Link: https://patch.msgid.link/20231114141256.126749-4-cleger@rivosinc.com/
> Signed-off-by: Guodong Xu <guodong at riscstar.com>

Thanks, queued for v6.19-rc.


- Paul