On Tue, 7 Feb 2017 16:28:02 +0800 Peter Xu <pet...@redhat.com> wrote:
> This is v7 of vt-d vfio enablement series. [snip] > ========= > Test Done > ========= > > Build test passed for x86_64/arm/ppc64. > > Simply tested with x86_64, assigning two PCI devices to a single VM, > boot the VM using: > > bin=x86_64-softmmu/qemu-system-x86_64 > $bin -M q35,accel=kvm,kernel-irqchip=split -m 1G \ > -device intel-iommu,intremap=on,eim=off,caching-mode=on \ > -netdev user,id=net0,hostfwd=tcp::5555-:22 \ > -device virtio-net-pci,netdev=net0 \ > -device vfio-pci,host=03:00.0 \ > -device vfio-pci,host=02:00.0 \ > -trace events=".trace.vfio" \ > /var/lib/libvirt/images/vm1.qcow2 > > pxdev:bin [vtd-vfio-enablement]# cat .trace.vfio > vtd_page_walk* > vtd_replay* > vtd_inv_desc* > > Then, in the guest, run the following tool: > > > https://github.com/xzpeter/clibs/blob/master/gpl/userspace/vfio-bind-group/vfio-bind-group.c > > With parameter: > > ./vfio-bind-group 00:03.0 00:04.0 > > Check host side trace log, I can see pages are replayed and mapped in > 00:04.0 device address space, like: > > ... > vtd_replay_ce_valid replay valid context device 00:04.00 hi 0x401 lo > 0x38fe1001 > vtd_page_walk Page walk for ce (0x401, 0x38fe1001) iova range 0x0 - > 0x8000000000 > vtd_page_walk_level Page walk (base=0x38fe1000, level=3) iova range 0x0 - > 0x8000000000 > vtd_page_walk_level Page walk (base=0x35d31000, level=2) iova range 0x0 - > 0x40000000 > vtd_page_walk_level Page walk (base=0x34979000, level=1) iova range 0x0 - > 0x200000 > vtd_page_walk_one Page walk detected map level 0x1 iova 0x0 -> gpa 0x22dc3000 > mask 0xfff perm 3 > vtd_page_walk_one Page walk detected map level 0x1 iova 0x1000 -> gpa > 0x22e25000 mask 0xfff perm 3 > vtd_page_walk_one Page walk detected map level 0x1 iova 0x2000 -> gpa > 0x22e12000 mask 0xfff perm 3 > vtd_page_walk_one Page walk detected map level 0x1 iova 0x3000 -> gpa > 0x22e2d000 mask 0xfff perm 3 > vtd_page_walk_one Page walk detected map level 0x1 iova 0x4000 -> gpa > 0x12a49000 mask 0xfff perm 3 > vtd_page_walk_one Page walk detected map level 0x1 iova 0x5000 -> gpa > 0x129bb000 mask 0xfff perm 3 > vtd_page_walk_one Page walk detected map level 0x1 iova 0x6000 -> gpa > 0x128db000 mask 0xfff perm 3 > vtd_page_walk_one Page walk detected map level 0x1 iova 0x7000 -> gpa > 0x12a80000 mask 0xfff perm 3 > vtd_page_walk_one Page walk detected map level 0x1 iova 0x8000 -> gpa > 0x12a7e000 mask 0xfff perm 3 > vtd_page_walk_one Page walk detected map level 0x1 iova 0x9000 -> gpa > 0x12b22000 mask 0xfff perm 3 > vtd_page_walk_one Page walk detected map level 0x1 iova 0xa000 -> gpa > 0x12b41000 mask 0xfff perm 3 > ... Hi Peter, I'm trying to make use of this, with your vtd-vfio-enablement-v7 branch (HEAD 0c1c4e738095). I'm assigning an 82576 PF to a VM. It works with iommu=pt, but if I remove that option, the device does not work and vfio_iommu_map_notify is never called. Any suggestions? My commandline is below. Thanks, Alex /usr/local/bin/qemu-system-x86_64 \ -name guest=l1,debug-threads=on -S \ -machine pc-q35-2.9,accel=kvm,usb=off,dump-guest-core=off,kernel-irqchip=split \ -cpu host -m 10240 -realtime mlock=off -smp 4,sockets=1,cores=2,threads=2 \ -no-user-config -nodefaults -monitor stdio -rtc base=utc,driftfix=slew \ -global kvm-pit.lost_tick_policy=discard -no-hpet -no-shutdown \ -global ICH9-LPC.disable_s3=1 -global ICH9-LPC.disable_s4=1 \ -boot strict=on \ -device ioh3420,port=0x10,chassis=1,id=pci.1,bus=pcie.0,addr=0x2 \ -device i82801b11-bridge,id=pci.2,bus=pcie.0,addr=0x1e \ -device pci-bridge,chassis_nr=3,id=pci.3,bus=pci.2,addr=0x0 \ -device ioh3420,port=0x18,chassis=4,id=pci.4,bus=pcie.0,addr=0x3 \ -device ioh3420,port=0x20,chassis=5,id=pci.5,bus=pcie.0,addr=0x4 \ -device ioh3420,port=0x28,chassis=6,id=pci.6,bus=pcie.0,addr=0x5 \ -device ioh3420,port=0x30,chassis=7,id=pci.7,bus=pcie.0,addr=0x6 \ -device ioh3420,port=0x38,chassis=8,id=pci.8,bus=pcie.0,addr=0x7 \ -device ich9-usb-ehci1,id=usb,bus=pcie.0,addr=0x1d.0x7 \ -device ich9-usb-uhci1,masterbus=usb.0,firstport=0,bus=pcie.0,multifunction=on,addr=0x1d \ -device ich9-usb-uhci2,masterbus=usb.0,firstport=2,bus=pcie.0,addr=0x1d.0x1 \ -device ich9-usb-uhci3,masterbus=usb.0,firstport=4,bus=pcie.0,addr=0x1d.0x2 \ -device virtio-serial-pci,id=virtio-serial0,bus=pci.4,addr=0x0 \ -drive file=/dev/vg_s20/lv_l1,format=raw,if=none,id=drive-virtio-disk0,cache=none,aio=native \ -device virtio-blk-pci,scsi=off,bus=pci.5,addr=0x0,drive=drive-virtio-disk0,id=virtio-disk0,bootindex=1 \ -netdev user,id=hostnet0 \ -device virtio-net-pci,netdev=hostnet0,id=net0,mac=52:54:00:c2:62:30,bus=pci.1,addr=0x0 \ -device usb-tablet,id=input0,bus=usb.0,port=1 \ -vnc :0 -vga std \ -device vfio-pci,host=01:00.0,id=hostdev0,bus=pci.8,addr=0x0 \ -device intel-iommu,intremap=on,eim=off,caching-mode=on -trace events=/trace-events.txt -msg timestamp=on # cat /trace-events.txt vfio_listener* vfio_iommu* vtd*