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

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Date:	Fri, 09 Apr 2010 15:27:11 -0700
From:	Yinghai Lu <yinghai.lu@...cle.com>
To:	Andy Isaacson <adi@...apodia.org>
CC:	guenter.roeck@...csson.com, "H. Peter Anvin" <hpa@...or.com>,
	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" <linux-pci@...r.kernel.org>,
	"x86@...nel.org" <x86@...nel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Thomas Renninger <trenn@...e.de>
Subject: Re: [PATCH] x86: Reserve legacy VGA MMIO area for x86_64 as well
 as x86_32

On 04/09/2010 03:21 PM, Andy Isaacson wrote:
> On Fri, Apr 09, 2010 at 12:55:39PM -0700, Yinghai wrote:
>   
>> update version for test
>>
>> Subject: [PATCH] x86: reserve [0xa0000, 0x100000] in e820
>>
>> 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.
>>     
> This doesn't help, my AHCI still fails to initialize in the same way.
>
>   
bootlog?

what is the address used for AHCI?

YH
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