On Wed, May 06, 2015 at 05:39:28PM +0100, Peter Maydell wrote: > On 6 May 2015 at 17:33, Peter Maydell <peter.maydell@xxxxxxxxxx> wrote: > > On 27 April 2015 at 18:31, Christoffer Dall <christoffer.dall@xxxxxxxxxx> wrote: > >> Now when we have a host generic PCIe controller in the virt board, it > >> would be nice to be able to use MSIs so that we can eventually enable > >> VHOST with KVM. > >> > >> With these patches you can use MSIs with TCG and with KVM, but you still > >> need some fixes for the mapping of the IRQ index to the GSI number for > >> IRQFD to work. A separate series that enables IRQFD and vhost > >> is available: "ARM adaptations for vhost irqfd setup" > >> https://lists.gnu.org/archive/html/qemu-devel/2015-04/msg01054.html) > >> > >> Tested with KVM on XGene and with TCG by configuring a virtio-pci > >> network adapter for the guest and verifying MSIs going through as > >> expected. > > > > You forgot to change the QOM device name to 'arm-gicv2m', but > > I'll fix that up as I apply this to target-arm.next. > > ...except this series breaks booting of a linux guest using PCI > on the virt board with aarch32: > > PCI host bridge /pcie@10000000 ranges: > IO 0x3eff0000..0x3effffff -> 0x00000000 > MEM 0x10000000..0x3efeffff -> 0x10000000 > pci-host-generic 3f000000.pcie: PCI host bridge to bus 0000:00 > pci_bus 0000:00: root bus resource [bus 00-0f] > pci_bus 0000:00: root bus resource [io 0x0000-0xffff] > pci_bus 0000:00: root bus resource [mem 0x10000000-0x3efeffff] > PCI: bus0: Fast back to back transfers disabled > pci 0000:00:01.0: of_irq_parse_pci() failed with rc=-22 > pci 0000:00:02.0: of_irq_parse_pci() failed with rc=-22 > pci 0000:00:02.0: BAR 6: assigned [mem 0x10000000-0x1003ffff pref] > pci 0000:00:01.0: BAR 1: assigned [mem 0x10040000-0x10040fff] > pci 0000:00:02.0: BAR 1: assigned [mem 0x10041000-0x10041fff] > pci 0000:00:01.0: BAR 0: assigned [io 0x1000-0x103f] > pci 0000:00:02.0: BAR 0: assigned [io 0x1040-0x105f] > virtio-pci 0000:00:01.0: enabling device (0100 -> 0103) > virtio-pci 0000:00:02.0: enabling device (0100 -> 0103) > virtio_blk: probe of virtio32 failed with error -22 > virtio_net: probe of virtio33 failed with error -22 > > (and without virtio-blk we don't mount our rootfs). > Shanker figured out that this was due to me changing address-cells and size-cells in the gic node and breaking the irq-map in the DT and provided a fix. I will send a new series. Thanks, -Christoffer _______________________________________________ kvmarm mailing list kvmarm@xxxxxxxxxxxxxxxxxxxxx https://lists.cs.columbia.edu/mailman/listinfo/kvmarm
