linux-kernel - Re: [PATCH 4/4] x86, gart: Make sure GART does not map physmem above 1TB

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Message-ID: <4DAC5099.4010403@kernel.org>
Date:	Mon, 18 Apr 2011 07:54:17 -0700
From:	"H. Peter Anvin" <hpa@...nel.org>
To:	Joerg Roedel <joerg.roedel@....com>
CC:	Ingo Molnar <mingo@...hat.com>,
	Thomas Gleixner <tglx@...utronix.de>, x86@...nel.org,
	linux-kernel@...r.kernel.org, stable@...nel.org
Subject: Re: [PATCH 4/4] x86, gart: Make sure GART does not map physmem above
 1TB

On 04/18/2011 07:46 AM, H. Peter Anvin wrote:
> On 04/18/2011 06:45 AM, Joerg Roedel wrote:
>> The GART can only map physical memory below 1TB. Make sure
>> the gart driver in the kernel does not try to map memory
>> above 1TB.
> 
> Where does this limit come from?

Nevermind... despite the generic name of the file it looks to be
specific to the K8 GART.

	-hpa

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