Re: [Qemu-devel] [Bug 818673] Re: virtio: trying to map MMIO memory

[Alon Levy <alevy@redhat.com>]

On Thu, Sep 22, 2011 at 02:10:04PM -0500, Rick Vernam wrote:
> On Friday 16 September 2011 12:42:02 Rick Vernam wrote:
> > On Friday 16 September 2011 03:52:34 hkran wrote:
> > [snip]
> > 
> > > I have tried many times with many restarts or shutdown-and-boot xp guest
> > > but failed to meet the crashing.
> > > (I am using the virtio drivers referenced in the earlier mail list.)
> > > my command:
> > > 
> > > /home/huikai/qemu15/bin/qemu  --enable-kvm  -m 768  -drive
> > > file=/home/huikai/winxp_dev.img,if=virtio  -net nic,model=virtio -net
> > > user -usb -usbdevice tablet  -localtime -vga qxl -device virtio-serial
> > > -chardev spicevmc,name=vdagent,id=vdagent -device
> > > virtserialport,chardev=vdagent,name=spice0 -spice
> > > port=1234,disable-ticketing   -monitor
> > > telnet:localhost:12341,server,nowait
> > 
> > Okay, I tried a variation of that:
> > qemu-system-x86_64 -cpu host -enable-kvm -m 1536 -pidfile
> > /home/rick/qemu/hds/wxp.pid -drive
> > file=/home/rick/qemu/hds/wxp.raw,if=virtio -net nic,model=virtio -net user
> > -localtime -usb -vga qxl -device virtio-serial -chardev
> > spicevmc,name=vdagent,id=vdagent -device
> > virtserialport,chardev=vdagent,name=spice0 -spice
> > port=1234,disable-ticketing -monitor telnet:localhost:12341,server,nowait
> > 
> > And it's been running stable all day.
> > The differences between the command line that crashes and yours are:
> > - yours doesn't have "aio=native" in the -drive declaration.
> > - yours has some differences in the virtio-serial device declaration.
> > - yours has some differences in the virtserialport device declaration.
> > 
> > As time permits I'm going to try each of those differences individually.
> Without "aio=native" ...
> in the definition of virtserialport, I changed "name=spice0" to 
> "name=com.redhat.spice.0" - with this change, the guest vdagent works, but it 
> crashed...

If you provide details on the crash maybe someone can help.

> 
> > 
> > Thanks,
> > -Rick
>