Il 09/04/2013 19:43, Michael R. Hines ha scritto:
> *Here's the commit that causes the problem:*
>
> $ git checkout d185c094b404b4ff392b77d1244c0233da7d53bd
> qemu-char: eliminate busy waiting on can_read returning zero
Can you stil reproduce it after
commit 1e885b25275fb6763eb947b1e53b2d6911b967a8
Author: Paolo Bonzini <pbonz...@redhat.com>
Date: Mon Apr 8 15:03:15 2013 +0200
qemu-char: really fix behavior on can_read = 0
?
Paolo
> *Symptoms:*
>
> When the VM boots everything crawls and the host CPU is at 100%,
> messages are printing extremely slowly on the VM console
> and the VM is not making any boot progress......... printing kernel
> messages once a second or so.......
>
> Something in QEMU appears to be spinning.
>
> Here's my command line:
>
> qemu-system-x86_64 -enable-kvm -m 2048 -smp
> 2,sockets=1,cores=1,threads=1 -nodefconfig -rtc base=utc -no-shutdown
> disk.img -serial pty -monitor unix:/tmp/devguest,server,nowait -netdev
> type=tap,vhost=on,id=hostnet0,script=kvmifup.sh,downscript=kvmifdown.sh
> -device virtio-net-pci,netdev=hostnet0,mac=12:34:36:00:00:02 -usb
> -device usb-tablet,id=input0 -device
> virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x5
>
> - Michael Hines
