On Mon, 21 Jul 2008 11:21:39 -0400 Prarit Bhargava <prarit@xxxxxxxxxx> wrote: > > > FUJITA Tomonori wrote: > > On Mon, 21 Jul 2008 10:15:22 -0400 > > Prarit Bhargava <prarit@xxxxxxxxxx> wrote: > > > > > >> (This didn't appear on LKML or any of the mirrors ... trying again) > >> > >> It is possible that alloc_iommu()'s boundary_size overflows as > >> dma_get_seg_boundary can return 0xffffffff. In that case, further usage of > >> boundary_size triggers a BUG_ON() in the iommu code. > >> > > > > Did you actually hit this? pci-gart_64.c is used only by X86_64. > > > > I hit this by declaring a device struct and not declaring a value for > dev->dma_parms->segment_boundary_mask. What do you mean? You set dev->dma_params but does't set dev->dma_parms->segment_boundary_mask? If so, you need to fix your code. If you set dev->dma_parms, dma_parms needs to be initialized properly. -- To unsubscribe from this list: send the line "unsubscribe linux-pci" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
