[PATCH v2 2/3] arm64: Bail out PIE builds early if load address is not 4K aligned

[Stephen Warren]

On 9/4/20 3:07 AM, Edgar E. Iglesias wrote:
> From: "Edgar E. Iglesias" <edgar.iglesias at xilinx.com>
> 
> PIE requires a 4K aligned load address. If this is not met, trap
> the startup sequence in a WFI loop rather than running into obscure
> failures.

> diff --git a/arch/arm/cpu/armv8/start.S b/arch/arm/cpu/armv8/start.S
>  #if CONFIG_POSITION_INDEPENDENT
> +	/* Verify that we're 4K aligned.  */

Similar to the comment on the previous patch: I believe the code that
implements this check should be outside the #if check, since it's always
needed.