On Mon, 8 Sep 2008 18:10:09 +0900 FUJITA Tomonori <fujita.tomonori@xxxxxxxxxxxxx> wrote: > This patchset (against tip/master) fixes the problem that swiotlb > exhausts ZONE_DMA: > > http://lkml.org/lkml/2008/8/31/16 > > The root problem is that swiotlb_alloc_coherent always use ZONE_DMA, > which is fine for IA64 but not for x86_64. > > This patchset makes the callers set up the gfp flags so that > swiotlb_alloc_coherent can stop playing with the gfp flags. > > I think that it would be better to remove the allocation code in > swiotlb_alloc_coherent theoretically (what swiotlb should do is taking > care of the swiotlb memory. And swiotlb_alloc_coherent is not useful > since we use it only when we can't allocate memory reachable by the > device or we are in out of memory). But that code works for both x86 > and IA64 so it's not so bad, I guess. > > #1 is for IA64, #2-4 for x86, and #5 is for swiotlb. > Thanks, works well for me :) Tested-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@xxxxxxxxxxxxxx> -- To unsubscribe from this list: send the line "unsubscribe linux-ia64" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html