Re: [PATCH master] ARM: mmu32: mark whole early pagetable region as reserved

[Sascha Hauer <sha@pengutronix.de>]

On Thu, Aug 31, 2023 at 11:09:43AM +0200, Ahmad Fatoum wrote:
> The TTB area allocated for early MMU is now 64K instead of 16K, yet only
> the old 16K were requested to ensure e.g. memtest doesn't touch them.
> 
> Fix this by requesting the full region.
> 
> Fixes: 407ff71a3b5d ("ARM: mmu: alloc 64k for early page tables")
> Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
> ---
>  arch/arm/cpu/mmu_32.c | 3 ++-
>  1 file changed, 2 insertions(+), 1 deletion(-)

Applied, thanks

Sascha

> 
> diff --git a/arch/arm/cpu/mmu_32.c b/arch/arm/cpu/mmu_32.c
> index ebe92969997e..3ed76e30840a 100644
> --- a/arch/arm/cpu/mmu_32.c
> +++ b/arch/arm/cpu/mmu_32.c
> @@ -561,7 +561,8 @@ void __mmu_init(bool mmu_on)
>  	struct memory_bank *bank;
>  	uint32_t *ttb = get_ttb();
>  
> -	if (!request_sdram_region("ttb", (unsigned long)ttb, SZ_16K))
> +	if (!request_sdram_region("ttb", (unsigned long)ttb,
> +				  ARM_EARLY_PAGETABLE_SIZE))
>  		/*
>  		 * This can mean that:
>  		 * - the early MMU code has put the ttb into a place
> -- 
> 2.39.2
> 
> 
> 

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