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

[Rick Vernam <rickv@hobi.com>]

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On Friday 23 September 2011 14:07:17 Alon Levy wrote:
> 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.
This email thread has details early on the thread, and there is a bug report 
here: https://bugs.launchpad.net/bugs/818673 
All the details of the crash that are available to me are previously 
described.

> 
> > > Thanks,
> > > -Rick

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