[PATCH 2/4] RISC-V: add alternative-field for bits to not match against

[Andrew Jones]

On Fri, Jan 13, 2023 at 10:23:49PM +0100, Heiko Stuebner wrote:
...
> diff --git a/arch/riscv/kernel/cpufeature.c b/arch/riscv/kernel/cpufeature.c
> index 8c83bd9d0e22..a65bebdadb68 100644
> --- a/arch/riscv/kernel/cpufeature.c
> +++ b/arch/riscv/kernel/cpufeature.c
> @@ -377,7 +377,8 @@ void __init_or_module riscv_cpufeature_patch_func(struct alt_entry *begin,
>  			continue;
>  		}
>  
> -		if ((cpu_req_feature & alt->errata_id) == alt->errata_id) {
> +		if ((cpu_req_feature & alt->errata_id) == alt->errata_id &&
> +		    (~cpu_req_feature & alt->errata_not)) {

Should be (~cpu_req_feature & alt->errata_not) == alt->errata_not to allow
errata_not to also be a combination, right?

Thanks,
drew