Hello, I had initially posted this on the gentoo forums, but since the thread is getting little traction, perhaps here is a better place to ask the question:
I'm trying to achieve PCI-express GPU passthrough to a Window 10 VM, however, when trying to start the virtual machine (as root) with the hardware attached, this is what I get: virsh # start win10-clone error: Failed to start domain win10-clone error: internal error: process exited while connecting to monitor: 2018-01-03T16:58:47.761436Z qemu-system-x86_64: -chardev pty,id=charserial0: char device redirected to /dev/pts/4 (label charserial0) 2018-01-03T16:58:47.786124Z qemu-system-x86_64: -device vfio-pci,host=01:00.0,id=hostdev0,bus=pci.0,addr=0x2: vfio error: 0000:01:00.0: failed to open /dev/vfio/1: Permission denied The file however, exists: # file /dev/vfio/1 /dev/vfio/1: character special (250/0) # ls -l /dev/vfio/1 crw------- 1 root root 250, 0 Jan 3 16:51 /dev/vfio/1 I followed the steps detailed in https://wiki.installgentoo.com/index.php/PCI_passthrough for host preparation, and in https://wiki.archlinux.org/index.php/PCI_passthrough_via_OVMF#Setting_up_the_guest_OS for setting up the guest. Before running virsh, I: /etc/init.d/libvirtd stop /etc/init.d/libvirt-guests stop ./vfio-bind 0000:01:00.0 0000:01:00.1 /etc/init.d/libvirtd start /etc/init.d/libvirt-guests start I've tried playing around with /etc/libvirt/qemu.conf, namely with the "group", "user", and "dynamic_ownership" settings - even though I'm running everything as root - and with "cgroup_device_acl" (by adding "/dev/vfio/1" to the list). I cannot figure out what the problem in my setup is or what to try next. Is there anyone that can shine some light on this? System information, scripts used, and qemu USE flags can be found here: https://pastebin.com/XuGtDmSm Thank you! _______________________________________________ vfio-users mailing list vfio-users@redhat.com https://www.redhat.com/mailman/listinfo/vfio-users
