Re: [PATCH] swiotlb: fix dma_alloc_coherent allocation failures with swiotlb
From: Andi Kleen
Date: Thu Sep 04 2008 - 04:29:39 EST
> Even if it's tree, only each IOMMU knows what's the best. That's the
> point of these changes to remove the tricks in arch/x86/pci-dma.c and
> let IOMMUs do what they want.
Duplicating all the code. Sounds great.
> > Also there's usually the problem that not all busses are translated,
> > e.g. Calgary used to do that so for e.g. dev == NULL allocations you had
> > to use these fallback algorithms anyways.
> dev == NULL isn't a minor thing. It's just using the fallback
You still have to handle it fully.
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/