On Sat, Nov 01, 2014 at 05:21:32PM +0800, Linhaifeng wrote: > Hi,all > > VM use vhost-user backend cannot startup when memory bigger than 3.5G.The log > print "Bad ram offset 100000000" .Is this a bug? > > log： > [2014-11-01T08:39:07.245324Z] virtio_set_status:524 virtio-net device status > is 1 that means ACKNOWLEDGE > [2014-11-01T08:39:07.247225Z] virtio_set_status:524 virtio-balloon device > status is 1 that means ACKNOWLEDGE > [2014-11-01T08:39:07.320191Z] virtio_set_status:524 virtio-net device status > is 3 that means DRIVER > Bad ram offset 100000000 > [2014-11-01 08:39:07]: shutting down > > > command： > /usr/bin/qemu-system-x86_64 -name vm1 > -smp 4 > -drive > file=/mnt/sdb/linhf/imgs/vm1.img,if=none,id=drive-ide0-0-0,format=raw,cache=none,aio=native > -device ide-hd,bus=ide.0,unit=0,drive=drive-ide0-0-0,id=ide0-0-0,bootindex=1 > \ > -chardev socket,id=charnet0,path=/var/run/vhost-user/port1 -netdev > type=vhost-user,id=hostnet0,chardev=charnet0 -device > virtio-net-pci,netdev=hostnet0,id=net0,mac=00:00:00:00:00:01,bus=pci.0,addr=0x3 > \ > -enable-kvm -mem-prealloc -object > memory-backend-file,id=mem,size=3968M,mem-path=/dev/hugepages,share=on -numa > node,memdev=mem > > when memory is smaller than 3.5G VM would run well.
I reproduced this. Interestingly, this does not trigger with 4096. It does trigger with 3968. > > -- > Regards, > Haifeng
