linux-kernel - Re: [PATCH v2] x86: remove NX from video bios area

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Date:	Thu, 17 Nov 2011 06:56:46 -0800
From:	"H. Peter Anvin" <hpa@...or.com>
To:	wangyanqing <Udknight@...il.com>, torvalds@...ux-foundation.org,
	castet.matthieu@...e.fr, akpm@...ux-foundation.org, x86@...nel.org,
	spock@...too.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2] x86: remove NX from video bios area

On 11/17/2011 12:26 AM, wangyanqing wrote:
>  
> +/*we hope this the right video bios range*/
> +#define VIDEO_BIOS_BEGIN	0x000c0000
> +#define VIDEO_BIOS_END		0x000c7fff
> +
>  #define BIOS_ROM_BASE		0xffe00000
>  #define BIOS_ROM_END		0xffffffff

Ick.  This feels increasingly hacky, especially since the above is known
to not be the video BIOS range on a lot of reasons.

There is something much more fundamentally wrong here, including why X
permission is needed for uvesafb at all.

	-hpa

-- 
H. Peter Anvin, Intel Open Source Technology Center
I work for Intel.  I don't speak on their behalf.

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