diff options
| author | Guodong Xu <guodong@riscstar.com> | 2025-12-23 10:44:27 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2026-01-17 16:35:25 +0100 |
| commit | 5bfaf4fa3dc29826fd3f0d102636da5af4f8a544 (patch) | |
| tree | b9c9b474435b99532d56faede4fe3f77b0071f05 | |
| parent | 8a6b410e3d0f7ece64533a0f4d954fcada0f5d83 (diff) | |
riscv: cpufeature: Fix Zk bundled extension missing Zknh
[ Upstream commit 8632180daf735074a746ce2b3808a8f2c079310e ]
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@riscstar.com>
Reviewed-by: Clément Léger <cleger@rivosinc.com>
Link: https://patch.msgid.link/20251223-zk-missing-zknh-v1-1-b627c990ee1a@riscstar.com
Signed-off-by: Paul Walmsley <pjw@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
| -rw-r--r-- | arch/riscv/kernel/cpufeature.c | 23 |
1 files changed, 11 insertions, 12 deletions
diff --git a/arch/riscv/kernel/cpufeature.c b/arch/riscv/kernel/cpufeature.c index 72ca768f4e91..2367e9755524 100644 --- a/arch/riscv/kernel/cpufeature.c +++ b/arch/riscv/kernel/cpufeature.c @@ -279,23 +279,22 @@ static const unsigned int riscv_a_exts[] = { RISCV_ISA_EXT_ZALRSC, }; +#define RISCV_ISA_EXT_ZKN \ + RISCV_ISA_EXT_ZBKB, \ + RISCV_ISA_EXT_ZBKC, \ + RISCV_ISA_EXT_ZBKX, \ + RISCV_ISA_EXT_ZKND, \ + RISCV_ISA_EXT_ZKNE, \ + RISCV_ISA_EXT_ZKNH + static const unsigned int riscv_zk_bundled_exts[] = { - RISCV_ISA_EXT_ZBKB, - RISCV_ISA_EXT_ZBKC, - RISCV_ISA_EXT_ZBKX, - RISCV_ISA_EXT_ZKND, - RISCV_ISA_EXT_ZKNE, + RISCV_ISA_EXT_ZKN, RISCV_ISA_EXT_ZKR, - RISCV_ISA_EXT_ZKT, + RISCV_ISA_EXT_ZKT }; static const unsigned int riscv_zkn_bundled_exts[] = { - RISCV_ISA_EXT_ZBKB, - RISCV_ISA_EXT_ZBKC, - RISCV_ISA_EXT_ZBKX, - RISCV_ISA_EXT_ZKND, - RISCV_ISA_EXT_ZKNE, - RISCV_ISA_EXT_ZKNH, + RISCV_ISA_EXT_ZKN }; static const unsigned int riscv_zks_bundled_exts[] = { |