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charset="utf-8" Add B to hwcap and ensure when B is present that Zba, Zbb, and Zbs are all set. Signed-off-by: Andrew Jones --- arch/riscv/include/asm/hwcap.h | 1 + arch/riscv/include/uapi/asm/hwcap.h | 1 + arch/riscv/kernel/cpufeature.c | 8 ++++++++ 3 files changed, 10 insertions(+) diff --git a/arch/riscv/include/asm/hwcap.h b/arch/riscv/include/asm/hwcap.h index 03acd22bbbaa..c17e11caca83 100644 --- a/arch/riscv/include/asm/hwcap.h +++ b/arch/riscv/include/asm/hwcap.h @@ -11,6 +11,7 @@ #include =20 #define RISCV_ISA_EXT_A ('a' - 'a') +#define RISCV_ISA_EXT_B ('b' - 'a') #define RISCV_ISA_EXT_C ('c' - 'a') #define RISCV_ISA_EXT_D ('d' - 'a') #define RISCV_ISA_EXT_F ('f' - 'a') diff --git a/arch/riscv/include/uapi/asm/hwcap.h b/arch/riscv/include/uapi/= asm/hwcap.h index c52bb7bbbabe..96b7cf854e09 100644 --- a/arch/riscv/include/uapi/asm/hwcap.h +++ b/arch/riscv/include/uapi/asm/hwcap.h @@ -21,6 +21,7 @@ #define COMPAT_HWCAP_ISA_F (1 << ('F' - 'A')) #define COMPAT_HWCAP_ISA_D (1 << ('D' - 'A')) #define COMPAT_HWCAP_ISA_C (1 << ('C' - 'A')) +#define COMPAT_HWCAP_ISA_B (1 << ('B' - 'A')) #define COMPAT_HWCAP_ISA_V (1 << ('V' - 'A')) =20 #endif /* _UAPI_ASM_RISCV_HWCAP_H */ diff --git a/arch/riscv/kernel/cpufeature.c b/arch/riscv/kernel/cpufeature.c index 25ed1d6958d7..ca7a34f66738 100644 --- a/arch/riscv/kernel/cpufeature.c +++ b/arch/riscv/kernel/cpufeature.c @@ -429,6 +429,12 @@ static const unsigned int riscv_c_exts[] =3D { RISCV_ISA_EXT_ZCD, }; =20 +static const unsigned int riscv_b_exts[] =3D { + RISCV_ISA_EXT_ZBA, + RISCV_ISA_EXT_ZBB, + RISCV_ISA_EXT_ZBS, +}; + /* * The canonical order of ISA extension names in the ISA string is defined= in * chapter 27 of the unprivileged specification. @@ -476,6 +482,7 @@ const struct riscv_isa_ext_data riscv_isa_ext[] =3D { __RISCV_ISA_EXT_DATA_VALIDATE(d, RISCV_ISA_EXT_D, riscv_ext_d_validate), __RISCV_ISA_EXT_DATA(q, RISCV_ISA_EXT_Q), __RISCV_ISA_EXT_SUPERSET(c, RISCV_ISA_EXT_C, riscv_c_exts), + __RISCV_ISA_EXT_SUPERSET(b, RISCV_ISA_EXT_B, riscv_b_exts), __RISCV_ISA_EXT_SUPERSET_VALIDATE(v, RISCV_ISA_EXT_V, riscv_v_exts, riscv= _ext_vector_float_validate), __RISCV_ISA_EXT_DATA(h, RISCV_ISA_EXT_H), __RISCV_ISA_EXT_SUPERSET_VALIDATE(zicbom, RISCV_ISA_EXT_ZICBOM, riscv_xli= nuxenvcfg_exts, riscv_ext_zicbom_validate), @@ -1089,6 +1096,7 @@ void __init riscv_fill_hwcap(void) isa2hwcap['f' - 'a'] =3D COMPAT_HWCAP_ISA_F; isa2hwcap['d' - 'a'] =3D COMPAT_HWCAP_ISA_D; isa2hwcap['c' - 'a'] =3D COMPAT_HWCAP_ISA_C; + isa2hwcap['b' - 'a'] =3D COMPAT_HWCAP_ISA_B; isa2hwcap['v' - 'a'] =3D COMPAT_HWCAP_ISA_V; =20 if (!acpi_disabled) { --=20 2.43.0