[PATCH v2 2/2] ARM: move device tree mapping out of linear region

[Russell King - ARM Linux admin]

On Wed, Oct 28, 2020 at 01:52:48PM +0100, Ard Biesheuvel wrote:
> Does this help?
> 
> diff --git a/arch/arm/include/asm/memory.h b/arch/arm/include/asm/memory.h
> index bb79e52aeb90..4f355bda872a 100644
> --- a/arch/arm/include/asm/memory.h
> +++ b/arch/arm/include/asm/memory.h
> @@ -68,8 +68,8 @@
>  #define XIP_VIRT_ADDR(physaddr)  (MODULES_VADDR + ((physaddr) & 0x000fffff))
> 
>  #define FDT_FIXED_BASE         UL(0xff800000)
> -#define FDT_FIXED_SIZE         (2 * PMD_SIZE)
> -#define FDT_VIRT_ADDR(physaddr)        ((void *)(FDT_FIXED_BASE |
> (physaddr) % PMD_SIZE))
> +#define FDT_FIXED_SIZE         (2 * SECTION_SIZE)
> +#define FDT_VIRT_ADDR(physaddr)        ((void *)(FDT_FIXED_BASE |
> (physaddr) % SECTION_SIZE))

Is this correct? If the FDT fixed size is 2x, why does FDT_VIRT_ADDR()
only work for half of it?

-- 
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