George Spelvin wrote: > Tejun Heo <htejun@xxxxxxxxx> wrote: >>> Q: Does the fact that I'm using the GART IOMMU mean that I'm not really using >>> using 64-bit DMA at all? >> Can you turn it off and see what happens? > > I can if I can verify that every other bus-master PCI device in the > system can do 64-bit DMA. > > Do you know how to check that? I haven't found a file under /sys or > /proc that tells me what the DMA masks are of various system > drivers, but that doesn't mean that it doesn't exist. It doesn't really matter. The kernel will bounce buffers as necessary. -- tejun -- To unsubscribe from this list: send the line "unsubscribe linux-ide" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
