Re: [Qemu-devel] [Spice-devel] Vioserial of Windows guest OS on Qemu 0.15

[Vadim Rozenfeld <vrozenfe@redhat.com>]

On Mon, 2012-01-16 at 10:02 +0800, Charles.Tsai-蔡清海-研究發展部 wrote:
> Vadim,
> 
> Thank you for your prompt reply. Here are the information for our test case.
> 
> 
> 1) we use the following command line to launch the guest OS
> 
> 
> /usr/bin/kvm -S -M pc-0.14 -enable-kvm -m 1024 -smp 1,sockets=1,cores=1,threads=1 -name win_xp -uuid d9388815-ddd3-c38e-33c2-a9d5fcc7a775 -nodefconfig -nodefaults -chardev socket,id=charmonitor,path=/var/lib/libvirt/qemu/win_xp.monitor,server,nowait
> -mon chardev=charmonitor,id=monitor,mode=readline
> -rtc base=localtime
> -device virtio-serial-pci,id=virtio-serial0,bus=pci.0,multifunction=on,addr=0x5.0x0
> -drive file=/media/Images/Windows-XP.img,if=none,id=drive-ide0-0-0,format=raw
> -device ide-drive,bus=ide.0,unit=0,drive=drive-ide0-0-0,id=ide0-0-0,bootindex=1
> -netdev tap,fd=17,id=hostnet0
> -device rtl8139,netdev=hostnet0,id=net0,mac=52:54:00:e8:dc:b1,bus=pci.0,multifunction=on,addr=0x3.0x0
> -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
> -usb -device usb-tablet,id=input0
> -spice port=5900,addr=0.0.0.0,disable-ticketing
> -vga qxl -global qxl-vga.vram_size=67108864 -device virtio-balloon-pci,id=balloon0,bus=pci.0,multifunction=on,addr=0x4.0x0
> 
> 
> 
> 2). In Guest Windows XP OS
> 
> 
> When the following callback function of the vioserial device  is called in guest OS. The allocated resources is empty.
> 
> 
> VIOSerialEvtDevicePrepareHardware() ---This function is to get the I/O address of the vioserial device and map the physical address to the logical address space.
> 
> I added the following trace and the value of nListSize is ZERO.
> TraceEvents(TRACE_LEVEL_INFORMATION, DBG_PNP, "%s (nListSize=%d)\n", __FUNCTION__,nListSize); 
> 
> 
> So far, we have tested Qemu 0.14 without any problem but Qemu 0.15 seemed to be broken in vioserial device.
> Let me know if you need further information. Thanks.
> 
Hi Charles,
You're right. 
If WdfCmResourceListGetCount returns zero, 
it must be a problem with resources list.
Output of "info pci" and "info qtree" commands
could be helpful in analyzing this problem.

Best regards,
Vadim.
> 
> 
> 
> -----Original Message-----
> From: Vadim Rozenfeld [mailto:vrozenfe@redhat.com] 
> Sent: Sunday, January 15, 2012 7:42 PM
> To: Stefan Hajnoczi
> Cc: Charles.Tsai-蔡清海-研究發展部; Alon Levy; spice-devel@lists.freedesktop.org; Alex Huang-黃必賢-研究發展部; qemu-devel
> Subject: Re: [Spice-devel] Vioserial of Windows guest OS on Qemu 0.15
> 
> On Sun, 2012-01-15 at 11:27 +0000, Stefan Hajnoczi wrote:
> > 2012/1/14 Charles.Tsai-蔡清海-研究發展部 <charles.tsai@cloudena.com>:
> > >        I tested Qemu 0.15 for Windows XP guest OS. But I found that the Virtual Serial I/O driver failed in driver initialization.
> > >        The root cause of this problem is because the hardware resources(I/O in this device) is not allocated to the virtual serial I/O.
> > >        When I debugged on the vioserial driver, no hardware resource actually is allocated to this device.
> > >        This bug seems to be in the area of Qemu. Do you know whom I can consult to fix this problem? Please let me know if you know the group or the person.
> > 
> > I have CCed Vadim (virtio Windows driver) and the QEMU mailing list.
> > 
> > Please post your QEMU command-line so we can see how the guest is configured.
> > 
> > You mentioned that you debugged the driver and hardware resources 
> > weren't allocated.  Do you have a virtio PCI device inside the guest 
> > for this virtio-serial device?  Were you able to tell which part of 
> > driver initialization failed (finding the PCI device, mapping its 
> > resources (BARs), etc)?
> > 
> > Stefan
> 
> Could you post "pci info" output?
> 
> thanks,
> Vadim.
>