Hi guys:
I was passthrough my GTX 970 on a win7_x64 and it works fine.The host is
running a Fedora 23 Workstation.
I use virt-manager 1.3.2 to create the VM,The version of Libvirt is
1.2.18,QEMU version is 2.4.1.
But when I run the 3Dmark 11 to confirm the function and performance,I
found that the physx function didn't work.
Aslo i found that the display tab in the "dxdiag" command shows me the
video memory is just 679MB,and the GTX 970 have 4096MB.
Can anyone tell me where is wrong?
here is my qemu startup log:
starting up libvirt version: 1.2.18.2, package: 2.fc23 (Fedora Project,
2016-01-21-00:54:13, buildhw-01-nfs.phx2.fedoraproject.org), qemu version:
2.4.1 (qemu-2.4.1-7.fc23)
LC_ALL=C PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin
QEMU_AUDIO_DRV=none /usr/bin/qemu-kvm -name win7 -S -machine
pc-i440fx-2.4,accel=kvm,usb=off,vmport=off -cpu
SandyBridge,+erms,+smep,+fsgsbase,+pdpe1gb,+rdrand,+f16c,+osxsave,+dca,+pcid,+pdcm,+xtpr,+tm2,+est,+smx,+vmx,+ds_cpl,+monitor,+dtes64,+pbe,+tm,+ht,+ss,+acpi,+ds,+vme,hv_time,hv_relaxed,hv_vapic,hv_spinlocks=0x1fff
-m 2048 -realtime mlock=off -smp 1,maxcpus=2,sockets=1,cores=2,threads=1 -uuid
a6f3edfd-39a7-450f-b557-9ddb459f9401 -no-user-config -nodefaults -chardev
socket,id=charmonitor,path=/var/lib/libvirt/qemu/win7.monitor,server,nowait
-mon chardev=charmonitor,id=monitor,mode=control -rtc
base=localtime,driftfix=slew -global kvm-pit.lost_tick_policy=discard -no-hpet
-no-reboot -global PIIX4_PM.disable_s3=1 -global PIIX4_PM.disable_s4=1 -boot
strict=on -device ich9-usb-ehci1,id=usb,bus=pci.0,addr=0x6.0x7 -device
ich9-usb-uhci1,masterbus=usb.0,firstport=0,bus=pci.0,multifunction=on,addr=0x6
-device ich9-usb-uhci2,masterbus=usb.0,firstport=2,bus=pci.0,addr=0x6.0x1
-device ich9-usb-uhci3,masterbus=usb.0,firstport=4,bus=pci.0,addr=0x6.0x2
-device virtio-serial-pci,id=virtio-serial0,bus=pci.0,addr=0x5 -drive
file=/var/lib/libvirt/images/win7.qcow2,if=none,id=drive-virtio-disk0,format=qcow2
-device
virtio-blk-pci,scsi=off,bus=pci.0,addr=0x7,drive=drive-virtio-disk0,id=virtio-disk0,bootindex=1
-drive
file=/soft/cn_windows_7_ultimate_with_sp1_x64_dvd_u_677408.iso,if=none,id=drive-ide0-0-1,readonly=on,format=raw
-device ide-cd,bus=ide.0,unit=1,drive=drive-ide0-0-1,id=ide0-0-1,bootindex=2
-drive
file=/soft/virtio-win-0.1.102.iso,if=none,id=drive-ide0-1-0,readonly=on,format=raw
-device ide-cd,bus=ide.1,unit=0,drive=drive-ide0-1-0,id=ide0-1-0,bootindex=3
-netdev tap,fd=23,id=hostnet0,vhost=on,vhostfd=24 -device
virtio-net-pci,netdev=hostnet0,id=net0,mac=52:54:00:41:6e:bb,bus=pci.0,addr=0x3
-chardev pty,id=charserial0 -device isa-serial,chardev=charserial0,id=serial0
-chardev spicevmc,id=charchannel0,name=vdagent -device
virtserialport,bus=virtio-serial0.0,nr=1,chardev=charchannel0,id=channel0,name=com.redhat.spice.0
-device usb-tablet,id=input0 -vnc 127.0.0.1:0 -device
VGA,id=video0,vgamem_mb=16,bus=pci.0,addr=0x2 -device
intel-hda,id=sound0,bus=pci.0,addr=0x4 -device
hda-duplex,id=sound0-codec0,bus=sound0.0,cad=0 -chardev
spicevmc,id=charredir0,name=usbredir -device
usb-redir,chardev=charredir0,id=redir0 -chardev
spicevmc,id=charredir1,name=usbredir -device
usb-redir,chardev=charredir1,id=redir1 -device
virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x8 -msg timestamp=on
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