[PATCH v3 1/8] riscv: add ISA extension parsing for Zalasr

Xu Lu
2025-09-19T07:37:40Z

Add parsing for Zalasr ISA extension.

Signed-off-by: Xu Lu <luxu.kernel@bytedance.com>
---
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 affd63e11b0a3..ae3852c4f2ca2 100644
--- a/arch/riscv/include/asm/hwcap.h
+++ b/arch/riscv/include/asm/hwcap.h
@@ -106,6 +106,7 @@
#define RISCV_ISA_EXT_ZAAMO 97
#define RISCV_ISA_EXT_ZALRSC 98
#define RISCV_ISA_EXT_ZICBOP 99
+#define RISCV_ISA_EXT_ZALASR 100

#define RISCV_ISA_EXT_XLINUXENVCFG 127

diff --git a/arch/riscv/kernel/cpufeature.c b/arch/riscv/kernel/cpufeature.c
index 743d53415572e..bf9d3d92bf372 100644
--- a/arch/riscv/kernel/cpufeature.c
+++ b/arch/riscv/kernel/cpufeature.c
@@ -472,6 +472,7 @@ const struct riscv_isa_ext_data riscv_isa_ext[] = {
__RISCV_ISA_EXT_DATA(zaamo, RISCV_ISA_EXT_ZAAMO),
__RISCV_ISA_EXT_DATA(zabha, RISCV_ISA_EXT_ZABHA),
__RISCV_ISA_EXT_DATA(zacas, RISCV_ISA_EXT_ZACAS),
+ __RISCV_ISA_EXT_DATA(zalasr, RISCV_ISA_EXT_ZALASR),
__RISCV_ISA_EXT_DATA(zalrsc, RISCV_ISA_EXT_ZALRSC),
__RISCV_ISA_EXT_DATA(zawrs, RISCV_ISA_EXT_ZAWRS),
__RISCV_ISA_EXT_DATA(zfa, RISCV_ISA_EXT_ZFA),
--
2.20.1