Re: [PATCH 07/10] riscv: add ISA extension parsing for Zcmop

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On Wed, Apr 10, 2024 at 11:11:00AM +0200, Clément Léger wrote:
Add parsing for Zcmop ISA extension which was ratified in commit
b854a709c00 ("Zcmop is ratified/1.0") of the riscv-isa-manual.

Signed-off-by: Clément Léger <cleger@xxxxxxxxxxxx>
---
arch/riscv/include/asm/hwcap.h | 1 +
arch/riscv/kernel/cpufeature.c | 1 +
2 files changed, 2 insertions(+)

diff --git a/arch/riscv/include/asm/hwcap.h b/arch/riscv/include/asm/hwcap.h
index b7551bad341b..cff7660de268 100644
--- a/arch/riscv/include/asm/hwcap.h
+++ b/arch/riscv/include/asm/hwcap.h
@@ -86,6 +86,7 @@
#define RISCV_ISA_EXT_ZCB		77
#define RISCV_ISA_EXT_ZCD		78
#define RISCV_ISA_EXT_ZCF		79
+#define RISCV_ISA_EXT_ZCMOP		80

#define RISCV_ISA_EXT_XLINUXENVCFG	127

diff --git a/arch/riscv/kernel/cpufeature.c b/arch/riscv/kernel/cpufeature.c
index 09dee071274d..f1450cd7231e 100644
--- a/arch/riscv/kernel/cpufeature.c
+++ b/arch/riscv/kernel/cpufeature.c
@@ -265,6 +265,7 @@ const struct riscv_isa_ext_data riscv_isa_ext[] = {
	__RISCV_ISA_EXT_DATA(zcb, RISCV_ISA_EXT_ZCB),
	__RISCV_ISA_EXT_DATA(zcd, RISCV_ISA_EXT_ZCD),
	__RISCV_ISA_EXT_DATA(zcf, RISCV_ISA_EXT_ZCF),
+	__RISCV_ISA_EXT_DATA(zcmop, RISCV_ISA_EXT_ZCMOP),

As per spec zcmop is dependent on zca. So perhaps below ?

__RISCV_ISA_EXT_SUPERSET(zicboz, RISCV_ISA_EXT_ZCMOP, RISCV_ISA_EXT_ZCA)


	__RISCV_ISA_EXT_DATA(zba, RISCV_ISA_EXT_ZBA),
	__RISCV_ISA_EXT_DATA(zbb, RISCV_ISA_EXT_ZBB),
	__RISCV_ISA_EXT_DATA(zbc, RISCV_ISA_EXT_ZBC),
--
2.43.0






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