Hello, On Mon, Nov 21, 2011 at 02:05:28PM +0100, Stanislaw Gruszka wrote: > The farther we get the problem is more and more strange. > > Device that write to wrong address, would generate: > > DMAR:[DMA Write] Request device [00:02.0] fault addr 6df084000 > DMAR:[fault reason 05] PTE Write access is not set And that's exactly what happens if I don't disable firewire-ohci, because of that stupid Ricoh multifunction blah blah issue. > But only if > > PCI-DMA: Using DMAR IOMMU > > was printed in dmesg before. DMAR can be disabled by graphics > driver, or maybe by other drivers too. Then above print will > be missed in dmesg and protection would not work. > > Try "dmesg | grep DMAR" to see if DMA remapping is really is > in use. Well, this message is not printed, but as I said, loading firewire-ohci triggers DMAR faults, so it should be in use anyway. -- Tomáš Janoušek, a.k.a. Liskni_si, http://work.lisk.in/ -- To unsubscribe from this list: send the line "unsubscribe linux-wireless" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
