[PATCH] ARM: mm: shrink permanent FDT mapping to avoid mismatched attributes

[Russell King (Oracle)]

On Mon, Aug 15, 2022 at 04:10:27PM +0200, Ard Biesheuvel wrote:
> diff --git a/arch/arm/include/asm/memory.h b/arch/arm/include/asm/memory.h
> index a55a9038abc8..aeb83eb5d251 100644
> --- a/arch/arm/include/asm/memory.h
> +++ b/arch/arm/include/asm/memory.h
> @@ -79,7 +79,6 @@
>  #define XIP_VIRT_ADDR(physaddr)  (MODULES_VADDR + ((physaddr) & 0x000fffff))
>  
>  #define FDT_FIXED_BASE		UL(0xff800000)
> -#define FDT_FIXED_SIZE		(2 * SECTION_SIZE)
>  #define FDT_VIRT_BASE(physbase)	((void *)(FDT_FIXED_BASE | (physbase) % SECTION_SIZE))

Should this now use PAGE_SIZE rather than SECTION_SIZE since we won't
be using a section mapping?

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