[PATCH v3] Check that hartid is within the SBI_HARTMASK_MAX_BITS

[Xiang W]

在 2025-01-28二的 13:33 -0800，Raj Vishwanathan写道：
> It is possible that hartid may not be sequential and it should not be validated
> against SBI_HARTMASK_MAX_BITS. Instead we should check the index of the hartid, hart index, against SBI_HARTMASK_MAX_BITS.
> 
> Signed-off-by: Raj Vishwanathan <Raj.Vishwanathan at gmail.com>
LGTM

Reviewed-by: Xiang W <wxjstz at 126.com>
> --
> Changes in V2:
>     Update: Make hart_count > SBI_HARTMASK_MAX_BITS a catastrophic failure.
> 
> Changes in V1:
>     Ignore if hart_count is more than SBI_HARTMASK_MAX_BITS.
> ---
>  lib/utils/fdt/fdt_domain.c  | 2 +-
>  lib/utils/fdt/fdt_helper.c  | 6 +++---
>  platform/generic/platform.c | 4 ++--
>  3 files changed, 6 insertions(+), 6 deletions(-)
> 
> diff --git a/lib/utils/fdt/fdt_domain.c b/lib/utils/fdt/fdt_domain.c
> index 4bc7ed8..7d10d10 100644
> --- a/lib/utils/fdt/fdt_domain.c
> +++ b/lib/utils/fdt/fdt_domain.c
> @@ -471,7 +471,7 @@ static int __fdt_parse_domain(const void *fdt, int domain_offset, void *opaque)
>  		if (err)
>  			continue;
>  
> -		if (SBI_HARTMASK_MAX_BITS <= val32)
> +		if (SBI_HARTMASK_MAX_BITS <= sbi_hartid_to_hartindex(val32))
>  			continue;
>  
>  		if (!fdt_node_is_enabled(fdt, cpu_offset))
> diff --git a/lib/utils/fdt/fdt_helper.c b/lib/utils/fdt/fdt_helper.c
> index cb350e5..4673921 100644
> --- a/lib/utils/fdt/fdt_helper.c
> +++ b/lib/utils/fdt/fdt_helper.c
> @@ -1032,7 +1032,7 @@ int fdt_parse_aclint_node(const void *fdt, int nodeoffset,
>  		if (rc)
>  			continue;
>  
> -		if (SBI_HARTMASK_MAX_BITS <= hartid)
> +		if (SBI_HARTMASK_MAX_BITS <= sbi_hartid_to_hartindex(hartid))
>  			continue;
>  
>  		if (match_hwirq == hwirq) {
> @@ -1097,7 +1097,7 @@ int fdt_parse_plmt_node(const void *fdt, int nodeoffset, unsigned long *plmt_bas
>  		if (rc)
>  			continue;
>  
> -		if (SBI_HARTMASK_MAX_BITS <= hartid)
> +		if (SBI_HARTMASK_MAX_BITS <= sbi_hartid_to_hartindex(hartid))
>  			continue;
>  
>  		if (hwirq == IRQ_M_TIMER)
> @@ -1153,7 +1153,7 @@ int fdt_parse_plicsw_node(const void *fdt, int nodeoffset, unsigned long *plicsw
>  		if (rc)
>  			continue;
>  
> -		if (SBI_HARTMASK_MAX_BITS <= hartid)
> +		if (SBI_HARTMASK_MAX_BITS <= sbi_hartid_to_hartindex(hartid))
>  			continue;
>  
>  		if (hwirq == IRQ_M_SOFT)
> diff --git a/platform/generic/platform.c b/platform/generic/platform.c
> index c03ed88..027ec89 100644
> --- a/platform/generic/platform.c
> +++ b/platform/generic/platform.c
> @@ -200,8 +200,8 @@ unsigned long fw_platform_init(unsigned long arg0, unsigned long arg1,
>  		if (rc)
>  			continue;
>  
> -		if (SBI_HARTMASK_MAX_BITS <= hartid)
> -			continue;
> +		if (SBI_HARTMASK_MAX_BITS <= hart_count)
> +			break;
>  
>  		if (!fdt_node_is_enabled(fdt, cpu_offset))
>  			continue;
> -- 
> 2.43.0
> 
>