Re: [discuss] Re: 32-bit dma allocations on 64-bit platforms

From: Andi Kleen
Date: Thu Jun 24 2004 - 09:45:27 EST


On Thu, 24 Jun 2004 16:36:47 +0200
Takashi Iwai <tiwai@xxxxxxx> wrote:

> At Thu, 24 Jun 2004 13:29:00 +0200,
> Andi Kleen wrote:
> >
> > > Can't it be called with GFP_KERNEL at first, then with GFP_DMA if the
> > > allocated pages are out of dma mask, just like in pci-gart.c?
> > > (with ifdef x86-64)
> >
> > That won't work reliable enough in extreme cases.
>
> Well, it's not perfect, but it'd be far better than GFP_DMA only :)

The only description for this patch I can think of is "russian roulette"

-Andi
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