linux-kernel - Re: GFP_DMA32 and PAE x86 machines

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Date:	Thu, 31 May 2007 08:07:45 +1000
From:	"Dave Airlie" <airlied@...il.com>
To:	"H. Peter Anvin" <hpa@...or.com>
Cc:	"Linus Torvalds" <torvalds@...l.org>, "Andi Kleen" <ak@...e.de>,
	"Linux Kernel Mailing List" <linux-kernel@...r.kernel.org>
Subject: Re: GFP_DMA32 and PAE x86 machines

Depending on split all lowmem is below 1GB which isn't exactly
optimal, I'd llike all 4GB for DMA.

Dave.

On 5/31/07, H. Peter Anvin <hpa@...or.com> wrote:
> Dave Airlie wrote:
> > Just a question,
> >
> > So we have GFP_DMA32 on x86-64 to gives us memory below 4G? so we not
> > have the same on PAE based x86 machines so I can use a consistent API
> > from the drm?
> >
> > Otherwise it'll be stick some ifdefs in the drm to deal with it..
> >
>
> Well, all lowmem is below 4 GB on i386...
>
> 	-hpa
>
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