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. Alex-- 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
