Re: [PATCH 1/2] x86/boot: fix KASL when memmap range manipulation is used

[Baoquan He <bhe@redhat.com>]

On 01/30/19 at 05:40pm, Julian Stecklina wrote:
> diff --git a/arch/x86/boot/compressed/kaslr.c b/arch/x86/boot/compressed/kaslr.c
> index 9ed9709..5657e34 100644
> --- a/arch/x86/boot/compressed/kaslr.c
> +++ b/arch/x86/boot/compressed/kaslr.c
> @@ -155,6 +155,12 @@ parse_memmap(char *p, unsigned long long *start, unsigned long long *size)
>  	case '#':
>  	case '$':
>  	case '!':
> +		/*
> +		 * % would need some more complex parsing, because regions might
> +		 * actually become usable for KASLR, but the simple way of
> +		 * ignoring anything that is mentioned in % works for now.
> +		 */

This seems to make thing more complicated even though have to. One
concern is whether we need to check the oldtype|newtype , e.g
oldtype=reserverd, newtype=RAM, is it possible to set like that?

Thanks
Baoquan

> +	case '%':
>  		*start = memparse(p + 1, &p);
>  		return 0;
>  	case '@':
> -- 
> 2.7.4
>