riscv: Add ISA extension parsing for Ziccrse

Add support to parse the Ziccrse string in the riscv,isa string. Signed-off-by: Alexandre Ghiti <alexghiti@rivosinc.com> Reviewed-by: Andrew Jones <ajones@ventanamicro.com> Reviewed-by: Andrea Parri <parri.andrea@gmail.com> Link: https://lore.kernel.org/r/20241103145153.105097-12-alexghiti@rivosinc.com Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
mariux64 · Nov 11, 2024 · 2d36fe8 · 2d36fe8
1 parent 22c3332
commit 2d36fe8
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diff --git a/arch/riscv/include/asm/hwcap.h b/arch/riscv/include/asm/hwcap.h
@@ -94,6 +94,7 @@
 #define RISCV_ISA_EXT_ZAWRS		85
 #define RISCV_ISA_EXT_SVVPTC		86
 #define RISCV_ISA_EXT_ZABHA		87
+#define RISCV_ISA_EXT_ZICCRSE		88
 
 #define RISCV_ISA_EXT_XLINUXENVCFG	127
 

diff --git a/arch/riscv/kernel/cpufeature.c b/arch/riscv/kernel/cpufeature.c
@@ -314,6 +314,7 @@ const struct riscv_isa_ext_data riscv_isa_ext[] = {
 					  riscv_ext_zicbom_validate),
 	__RISCV_ISA_EXT_SUPERSET_VALIDATE(zicboz, RISCV_ISA_EXT_ZICBOZ, riscv_xlinuxenvcfg_exts,
 					  riscv_ext_zicboz_validate),
+	__RISCV_ISA_EXT_DATA(ziccrse, RISCV_ISA_EXT_ZICCRSE),
 	__RISCV_ISA_EXT_DATA(zicntr, RISCV_ISA_EXT_ZICNTR),
 	__RISCV_ISA_EXT_DATA(zicond, RISCV_ISA_EXT_ZICOND),
 	__RISCV_ISA_EXT_DATA(zicsr, RISCV_ISA_EXT_ZICSR),