Re: [Xen-devel] [PATCH] x86/setup: don't relocate the VGA hole

[Ian Campbell <ian.campbell@xxxxxxxxxx>]

> @@ -840,10 +839,8 @@ void __init __start_xen(unsigned long mb
>               * data until after we have switched to the relocated pagetables!
>               */
>              barrier();
> -            dst = move_memory(e, 0, (unsigned long)&_end - XEN_VIRT_START, 
> 1);
> -
> -            /* Poison low 1MB to detect stray pointers to physical 0-1MB. */
> -            memset(dst, 0x55, 1U << 20);

Is this poisoning not still desirable?

> +            move_memory(e + (1u << 20), (1u << 20),
> +                      ((unsigned long)&_end - XEN_VIRT_START) - (1u << 20), 
> 1);
>  



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