[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
[Qemu-devel] [Bug 1175513] Re: Qemu 1.5.0 gpu clock control doesn`t work
From: |
Alex Williamson |
Subject: |
[Qemu-devel] [Bug 1175513] Re: Qemu 1.5.0 gpu clock control doesn`t work after guest reboot |
Date: |
Thu, 02 May 2013 15:07:49 -0000 |
One-shot use is about the state of the art until we implement a way for
vfio to do a bus reset on devices. A couple comments on the usage;
we're using the x-vga option to vfio-pci and also using -vga qxl.
Without specifying a bus for the vfio-pci device this will put qxl vga
and vfio vga both on the root complex with no way to switch between them
aside from completely disabling the device. This likely means qxl is
disabled and effectively the same as booting with -vga none. Second
oddity, vfio vga support wasn't added to the kernel until 3.9, how does
this qemu command like work on 3.8?
--
You received this bug notification because you are a member of qemu-
devel-ml, which is subscribed to QEMU.
https://bugs.launchpad.net/bugs/1175513
Title:
Qemu 1.5.0 gpu clock control doesn`t work after guest reboot
Status in QEMU:
New
Bug description:
I run qemu from git with such command:
qemu-system-x86_64 -nodefaults -m 4096 -smp 8,cores=4,threads=2,sockets=1
-cpu 'kvm64' -device usb-mouse -M q35 -vga qxl -no-hpet -boot once=c,menu=on
-device vfio-pci,host=02:00.0,x-vga=on \
-enable-kvm -monitor stdio -chardev
socket,path=/tmp/qga.sock,server,nowait,id=qga0 -device virtio-serial -device
virtserialport,chardev=qga0,name=org.qemu.guest_agent.0 -net
nic,vlan=0,model=e1000 -net tap,ifname=tap0,script=/etc/guest-ifup -usb -device
intel-hda -device hda-duplex \
-drive
file='/home/<user>/qemu/win7',if=none,id=drive-virtio-disk0,cache=writeback,aio=native,format=qed,discard=on
-device virtio-blk-pci,drive=drive-virtio-disk0,id=virtio-disk \
-drive
file='/dev/sr0',if=none,id=drive-ide1-0-0,media=cdrom,snapshot=off,format=raw
-device ide-drive,bus=ide.1,unit=0,drive=drive-ide1-0-0,id=ide1-0-0 \
-spice port=5930,disable-ticketing
Before guest (Windows 7) reboot, videocard works in 3D mode with full
frequency. But after reboot videocard works in 3D only with powersafe
frequency. Then I must reboot host for recover gpu clock control.
To manage notifications about this bug go to:
https://bugs.launchpad.net/qemu/+bug/1175513/+subscriptions