[vfio-users] vfio fails Guest FreeBSD9.3 host Fedora 23

Tue May 31 16:26:37 UTC 2016

Strange for me both 2MB and 1GB hugepages are failing
LC_ALL=C PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin
QEMU_AUDIO_DRV=spice /usr/bin/qemu-kvm -name generic -S -machine
pc-i440fx-2.4,accel=kvm,usb=off,vmport=off,mem-merge=off -cpu SandyBridge
-m 32768 -mem-prealloc -mem-path /dev/hugepages/libvirt/qemu -realtime
mlock=on -smp 8,sockets=8,cores=1,threads=1 -uuid
d8f61bc1-dd9a-470f-a26f-824e5e2b8359 -no-user-config -nodefaults -chardev
socket,id=charmonitor,path=/var/lib/libvirt/qemu/generic.monitor,server,nowait
-mon chardev=charmonitor,id=monitor,mode=control -rtc
base=utc,driftfix=slew -global kvm-pit.lost_tick_policy=discard -no-hpet
-no-shutdown -global PIIX4_PM.disable_s3=1 -global PIIX4_PM.disable_s4=1
-boot order=c,menu=on,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=/home/vcr/Appliance-4.6.0.0_5-vtnet0.img,if=none,id=drive-virtio-disk0,format=raw
-device
virtio-blk-pci,scsi=off,bus=pci.0,addr=0x8,drive=drive-virtio-disk0,id=virtio-disk0
-drive
file=/dev/disk/by-id/scsi-36001405fdc0e99da3aa4b37b1403085c,if=none,id=drive-virtio-disk1,format=raw
-device
virtio-blk-pci,scsi=off,bus=pci.0,addr=0xa,drive=drive-virtio-disk1,id=virtio-disk1
-netdev tap,fd=23,id=hostnet0,vhost=on,vhostfd=24 -device
virtio-net-pci,netdev=hostnet0,id=net0,mac=52:54:00:30:a0:c0,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
-spice
port=5900,addr=127.0.0.1,disable-ticketing,image-compression=off,seamless-migration=on
-device
qxl-vga,id=video0,ram_size=67108864,vram_size=67108864,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
vfio-pci,host=aa:02.0,id=hostdev0,bus=pci.0,addr=0x9,rombar=0 -device
vfio-pci,host=aa:02.1,id=hostdev1,bus=pci.0,addr=0xc,rombar=0 -device
vfio-pci,host=aa:02.2,id=hostdev2,bus=pci.0,addr=0xd,rombar=0 -device
vfio-pci,host=aa:02.3,id=hostdev3,bus=pci.0,addr=0xe,rombar=0 -device
vfio-pci,host=aa:06.0,id=hostdev4,bus=pci.0,addr=0xb,rombar=0 -device
vfio-pci,host=aa:06.1,id=hostdev5,bus=pci.0,addr=0xf,rombar=0 -device
vfio-pci,host=aa:06.2,id=hostdev6,bus=pci.0,addr=0x10,rombar=0 -device
vfio-pci,host=aa:06.3,id=hostdev7,bus=pci.0,addr=0x11,rombar=0 -device
virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x7 -msg timestamp=on
char device redirected to /dev/pts/2 (label charserial0)

(process:70685): GLib-ERROR **: gmem.c:100: failed to allocate 1048576 bytes
2016-05-31 16:20:39.371+0000: shutting down
:q

^C
[root at localhost vcr]# cat /proc/meminfo
MemTotal:       396231416 kB
MemFree:        318394500 kB
MemAvailable:   318898920 kB
Buffers:            3456 kB
Cached:           595536 kB
SwapCached:            0 kB
Active:           272052 kB
Inactive:         405868 kB
Active(anon):      86760 kB
Inactive(anon):      224 kB
Active(file):     185292 kB
Inactive(file):   405644 kB
Unevictable:       16372 kB
Mlocked:           16372 kB
SwapTotal:       4194300 kB
SwapFree:        4194300 kB
Dirty:                 0 kB
Writeback:             0 kB
AnonPages:         95336 kB
Mapped:           139740 kB
Shmem:              1688 kB
Slab:             292452 kB
SReclaimable:     154600 kB
SUnreclaim:       137852 kB
KernelStack:       12816 kB
PageTables:         9432 kB
NFS_Unstable:          0 kB
Bounce:                0 kB
WritebackTmp:          0 kB
CommitLimit:    164561272 kB
Committed_AS:     725316 kB
VmallocTotal:   34359738367 kB
VmallocUsed:           0 kB
VmallocChunk:          0 kB
HardwareCorrupted:     0 kB
AnonHugePages:         0 kB
CmaTotal:              0 kB
CmaFree:               0 kB
HugePages_Total:   32768
HugePages_Free:    32768
HugePages_Rsvd:        0
HugePages_Surp:        0
Hugepagesize:       2048 kB
DirectMap4k:      227008 kB
DirectMap2M:     4935680 kB
DirectMap1G:    399507456 kB

i tried qemu from preview 1G is failing in that too..dint try 2MB as yet..

On Fri, May 27, 2016 at 3:11 PM, Alex Williamson <alex.williamson at redhat.com
> wrote:

> [re-adding vfio-users]
>
> On Fri, 27 May 2016 15:03:17 -0400
> chintu hetam <rometoroam at gmail.com> wrote:
>
> > that worked Alex, sorry for the delay in response.
> > so my memorybacking configuration was
> >  <memoryBacking>
> >     <hugepages>
> >       <page size='1048576' unit='KiB' nodeset='1'/>
> >     </hugepages>
> >     <nosharepages/>
> >     <locked/>
> >   </memoryBacking>
> > i had to remove it completely in order to make it work.
> >
> > So confirming that hugepages and vfio has some issue, making VM to hang
> in
> > case of linux at startup and abruptly crashing from FreeBSD guest during
> > startup.
>
> Can you see if the problem persists with updated QEMU from virt-preview:
>
> https://fedoraproject.org/wiki/Virtualization_Preview_Repository
>
> 2MB hugepages certainly works, I run it daily.  1GB hugepages sees less
> attention, but I certainly thought it worked as well.  Thanks,
>
> Alex
>

-- 
-chintu-
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