[PATCH v2 14/19] riscv: add ISA extension parsing for Zvfh[min]

[Clément Léger]

Add parsing for Zvfh[min] ISA extension[1] which were ratified in
june 2023 around commit e2ccd0548d6c ("Remove draft warnings from
Zvfh[min]") in riscv-v-spec[2].

Link: https://drive.google.com/file/d/1_Yt60HGAf1r1hx7JnsIptw0sqkBd9BQ8/view [1]
Link: https://github.com/riscv/riscv-v-spec/commits/e2ccd0548d6c [2]
Signed-off-by: Clément Léger <cleger at rivosinc.com>
---
 arch/riscv/include/asm/hwcap.h | 2 ++
 arch/riscv/kernel/cpufeature.c | 2 ++
 2 files changed, 4 insertions(+)

diff --git a/arch/riscv/include/asm/hwcap.h b/arch/riscv/include/asm/hwcap.h
index a9aea62b6c6f..d9fb782f198d 100644
--- a/arch/riscv/include/asm/hwcap.h
+++ b/arch/riscv/include/asm/hwcap.h
@@ -82,6 +82,8 @@
 #define RISCV_ISA_EXT_ZFH		64
 #define RISCV_ISA_EXT_ZFHMIN		65
 #define RISCV_ISA_EXT_ZIHINTNTL		66
+#define RISCV_ISA_EXT_ZVFH		67
+#define RISCV_ISA_EXT_ZVFHMIN		68
 
 #define RISCV_ISA_EXT_MAX		128
 
diff --git a/arch/riscv/kernel/cpufeature.c b/arch/riscv/kernel/cpufeature.c
index 0a74b2cdcacf..c70885f5014b 100644
--- a/arch/riscv/kernel/cpufeature.c
+++ b/arch/riscv/kernel/cpufeature.c
@@ -266,6 +266,8 @@ const struct riscv_isa_ext_data riscv_isa_ext[] = {
 	__RISCV_ISA_EXT_DATA(zksh, RISCV_ISA_EXT_ZKSH),
 	__RISCV_ISA_EXT_DATA(zvbb, RISCV_ISA_EXT_ZVBB),
 	__RISCV_ISA_EXT_DATA(zvbc, RISCV_ISA_EXT_ZVBC),
+	__RISCV_ISA_EXT_DATA(zvfh, RISCV_ISA_EXT_ZVFH),
+	__RISCV_ISA_EXT_DATA(zvfhmin, RISCV_ISA_EXT_ZVFHMIN),
 	__RISCV_ISA_EXT_DATA(zvkb, RISCV_ISA_EXT_ZVKB),
 	__RISCV_ISA_EXT_DATA(zvkg, RISCV_ISA_EXT_ZVKG),
 	__RISCV_ISA_EXT_BUNDLE(zvkn, riscv_zvkn_bundled_exts),
-- 
2.42.0