linux-kernel - Re: [PATCH] x86: Reserve legacy VGA MMIO area for x86_64 as well as x86

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Message-ID: <4BBF70BC.3080809@zytor.com>
Date:	Fri, 09 Apr 2010 11:23:56 -0700
From:	"H. Peter Anvin" <hpa@...or.com>
To:	Yinghai <yinghai.lu@...cle.com>,
	Guenter Roeck <guenter.roeck@...csson.com>
CC:	Linus Torvalds <torvalds@...ux-foundation.org>,
	Bjorn Helgaas <bjorn.helgaas@...com>,
	Thomas Gleixner <tglx@...utronix.de>,
	Ingo Molnar <mingo@...hat.com>, linux-pci@...r.kernel.org,
	x86@...nel.org, linux-kernel@...r.kernel.org,
	Andy Isaacson <adi@...apodia.org>,
	Thomas Renninger <trenn@...e.de>
Subject: Re: [PATCH] x86: Reserve legacy VGA MMIO area for x86_64 as well
 as x86_32

[Adding Guenter Roeck as he was commenting on something writing to the
VGA area...]

On 04/09/2010 10:22 AM, Yinghai wrote:
> 
> then please check this one
> 
> update e820 at first, and later put them resource tree, but give pci BAR chance to claim
> the range, before assign unassigned resources.
> 
> in case some system doesn't have VGA, and use [0xa0000, ..] for mmio of some other pci devices.
> 

Do we have any evidence of any such system?

Either which way, the patch looks saner...

	-hpa
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