Re: [PATCH v2 1/8] riscv: remove unused functions in traps_misaligned.c

["Björn Töpel" <bjorn@kernel.org>]

Clément Léger <cleger@rivosinc.com> writes:

> Replace macros by the only two function calls that are done from this
> file, store_u8() and load_u8().
>
> Signed-off-by: Clément Léger <cleger@rivosinc.com>
> ---
>  arch/riscv/kernel/traps_misaligned.c | 46 +++++-----------------------
>  1 file changed, 7 insertions(+), 39 deletions(-)
>
> diff --git a/arch/riscv/kernel/traps_misaligned.c b/arch/riscv/kernel/traps_misaligned.c
> index 378f5b151443..e7bfb33089c1 100644
> --- a/arch/riscv/kernel/traps_misaligned.c
> +++ b/arch/riscv/kernel/traps_misaligned.c
> @@ -151,51 +151,19 @@
>  #define PRECISION_S 0
>  #define PRECISION_D 1
>  
> -#define DECLARE_UNPRIVILEGED_LOAD_FUNCTION(type, insn)			\
> -static inline type load_##type(const type *addr)			\
> -{									\
> -	type val;							\
> -	asm (#insn " %0, %1"						\
> -	: "=&r" (val) : "m" (*addr));					\
> -	return val;							\
> -}
> +static inline u8 load_u8(const u8 *addr)

Really a nit, and applies to the whole file: "static inline" in a .c
file is just useless.

> +{
> +	u8 val;
>  
> -#define DECLARE_UNPRIVILEGED_STORE_FUNCTION(type, insn)			\
> -static inline void store_##type(type *addr, type val)			\
> -{									\
> -	asm volatile (#insn " %0, %1\n"					\
> -	: : "r" (val), "m" (*addr));					\
> -}
> +	asm volatile("lbu %0, %1" : "=&r" (val) : "m" (*addr));

Why do you need early clobber here?


Björn