[PATCH] include: Adjust Sscofpmf mhpmevent mask for upper 8 bits

[Xiang W]

在 2024-07-30星期二的 17:24 +0800，Eric Lin写道：
> Currently, OpenSBI reserves the upper 16 bits in mhpmevent for
> the Sscofpmf extension.
> 
> However, according to the Sscofpmf extension specification[1],
> it only defines the upper 8 bits in mhpmevent for privilege mode
> inhibit and counter overflow disable. Other bits are defined by
> the platform for event selection.
> 
> Since vendors might define raw event encoding exceeding 48 bits in
> mhpmevent, we should adjust the MHPMEVENT_SSCOF_MASK to support it.
> 
> Link: https://github.com/riscvarchive/riscv-count-overflow [1]
> Signed-off-by: Eric Lin <eric.lin at sifive.com>
LGTM

Reviewed-By: Xiang W <wxjstz at 126.com>
> ---
>  include/sbi/riscv_encoding.h | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/include/sbi/riscv_encoding.h b/include/sbi/riscv_encoding.h
> index 477fa3a1..2ed05f24 100644
> --- a/include/sbi/riscv_encoding.h
> +++ b/include/sbi/riscv_encoding.h
> @@ -207,7 +207,7 @@
>  
>  #endif
>  
> -#define MHPMEVENT_SSCOF_MASK		_ULL(0xFFFF000000000000)
> +#define MHPMEVENT_SSCOF_MASK		_ULL(0xFF00000000000000)
>  
>  #define ENVCFG_STCE			(_ULL(1) << 63)
>  #define ENVCFG_PBMTE			(_ULL(1) << 62)
> -- 
> 2.43.2
> 
>