* Alexander Graf (agraf@xxxxxxx) wrote: > On 30.03.2010, at 01:00, Kenni Lund wrote: > > > 2010/3/29 Alexander Graf <agraf@xxxxxxx>: > >> > >> On 29.03.2010, at 19:23, Kenni Lund wrote: > >> > >>>>> 2010/1/9 Alexander Graf <agraf@xxxxxxx>: > >>>>>> > >>>>>> On 09.01.2010, at 03:45, Ryan C. Underwood wrote: > >>>>>> > >>>>>>> > >>>>>>> I have a multifunction PCI device that I'd like to pass through to KVM. > >>>>>>> In order to do that, I'm reading that the PCI memory region must be > >>>>>>> 4K-page > >>>>>>> aligned and the PCI memory resources itself must also be exact multiples > >>>>>>> of 4K pages. > >>>>>>> > >>>>>>> I have added the following on my kernel command line: > >>>>>>> reassign_resources reassigndev=08:09.0,08:09.1,08:09.2,08:09.3,08:09.4 > >>>>>>> > >>>>>>> But I don't know if it has any effect. The resources are still not > >>>>>>> sized in 4K pages. Also, this seems to screw up the last device. > >>>>>> > >>>>>> I submitted a patch to qemu-kvm recently that got rid of that limitation. > >>>>>> Please try out if the current git head works for you. > >>>>>> > >>>>>> Alex-- > >>>>> > >>>>> I just upgraded to kernel 2.6.32.10 with qemu-kvm 0.12.3 and I still > >>>>> get the following error when trying to pass through a dedicated PCI > >>>>> USB card: > >>>>> > >>>>> "Unable to assign device: PCI region 0 at address 0xe9403000 has size > >>>>> 0x100, which is not a multiple of 4K > >>>>> Error initializing device pci-assign" > >>>>> > >>>>> Didn't the above patch make it into qemu-kvm? I don't know why, but I > >>>>> was under the impression that this was fixed when I upgraded to > >>>>> qemu-kvm 0.12.3. > >>>>> > >>>> It's only in qemu-kvm.git. Maybe it should go into qemu-kvm-0.12.4 if there > >>>> is one > >>> > >>> That would be highly appriciated...with the current USB support in > >>> QEMU, PCI passthrough is the only way to get USB 2.0 support. I've > >>> bought two dedicated PCI USB cards for this, but none of them works > >>> due to the above limitation. > >>> > >>> Perhaps a developer can comment on this? Are there any plans on > >>> including this patch in the stable releases in the near future? > >> > >> Please first try out to build the current git snapshot of qemu-kvm. If it works properly for you then I agree that we should take this into 0.12-stable. > >> > >> I wrote the support for a card that still didn't work even with this patch. So having someone say it makes things work for him is definitely a must :-). > > > > Sure, I have compiled the current git snapshot and performed some > > tests...It's at least mostly working, so I'm a bit unsure if this is a > > bug related to this or to something else. > > Chris, any idea on this? Looks like something's going wrong with function assignment. Hmm, one thing that sticks out to me is the debug port. Kenni, can you post full dmesg on both host and guest, nothing is obviously broken (and in fact the guest should never "see" the debug port). thanks, -chris -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
