Re: more iommu sg merging fallout

From: David Miller
Date: Thu Feb 21 2008 - 01:55:44 EST


From: FUJITA Tomonori <fujita.tomonori@xxxxxxxxxxxxx>
Date: Tue, 19 Feb 2008 19:57:58 +0900

> On Sun, 17 Feb 2008 23:41:42 -0800 (PST)
> David Miller <davem@xxxxxxxxxxxxx> wrote:
>
> > From: FUJITA Tomonori <tomof@xxxxxxx>
> > Date: Sat, 16 Feb 2008 15:03:43 +0900
> >
> > > [PATCH] sparc64: make IOMMU code respect the segment boundary limits
> > >
> > > Signed-off-by: FUJITA Tomonori <fujita.tomonori@xxxxxxxxxxxxx>
> >
> > Looks good, but I think it will break sound for some ALI chips.
> >
> > Please see arch/sparc64/kernel/pci.c:ali_sound_dma_hack()
> > and it's caller pci_dma_supported().
>
> Could you explain the problem a little more?

Sorry, I was thinking of a different problem (for when I add
dma mask support to this code).

I will apply your patch, thanks!
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