Re: [Qemu-devel] a user here - pci-assign

[lejeczek]

thanks Alex for your patience, appreciate it I do

what would be the droids I need?
I'm experiencing guests' "puzzling" behavior and was 
suggested that command line arguments were wrong/incomplete.

same box/hardware and radeon 5450 and ...
- winXP-32bit -> OK - I assumed getting the guest on a 
external computer monitor was an ultimate test
- win7-64bit -> OS reports device as disabled cause the 
device reported an error

same box as above and geforce gt640 and ..
for both XP and 7 report device with exclamation marks (thus 
did not even bother to connect any screens like in working 
case with XP & radeon)

I'll try to get hold of ROMs of the cards, meanwhile, how 
can I troubleshoot it? how to get more verbose feedback and 
what to specifically look for?

many thanks




On 28/09/12 17:05, Alex Williamson wrote:
> On Fri, 2012-09-28 at 10:54 +0100, lejeczek wrote:
> > hi everybody,
> >
> > I've decided to bother you guys for user list seems.. quiet,
> > no, really.
> >
> > so, novice type of question, where/how do I get hold of the
> > values for below options?
> > I don't read the code, ain't no programmer, I can't figure
> > out how to get hold of the values for
> >
> > pci-assign.host=pci-hostaddr
> > pci-assign.iommu=uint32
> > pci-assign.bootindex=int32
> > pci-assign.configfd=string
> > pci-assign.addr=pci-devfn
> > pci-assign.romfile=string
> > pci-assign.rombar=uint32
> > pci-assign.multifunction=on/off
> >
> > and, would this be complete list (I saw a bug report online)
> > for qemu-kvm-0.12.1.2-2.295.el6_3.2.x86_64 ?
> > any user-friendly docs on it? I am tampering with VGAs but
> > cannot get it to work, some partial success though.
> These aren't the droids you're looking for to get assignment of VGA
> devices to work.  romfile is maybe the only interesting one, but only if
> qemu can't read it directly.
>
> All of these are options that get specified after:
>
> -device pci-assign
>
> > pci-assign.host=pci-hostaddr
> host=2:00.0 (specifies assigning host PCI device 2:00.0)
>
> > pci-assign.iommu=uint32
> deprecated, don't bother with this
>
> > pci-assign.bootindex=int32
> boot ordering, not useful for VGA
>
> > pci-assign.configfd=string
> pass an already open file descriptor for config space access, for
> libvirt managed guests only
>
> > pci-assign.addr=pci-devfn
> addr=3.0 (specifies the guest PCI address where the device is exposed)
>
> > pci-assign.romfile=string
> specifies a file to use as the PCI option ROM, unless you see a warning
> about not being able to read the ROM, this probably isn't going to help
> you.
>
> > pci-assign.rombar=uint32
> rombar=0 disables the PCI option ROM, for cases where it doesn't work or
> you don't want it.
>
> > pci-assign.multifunction=on/off
> for specifying multifunction devices, ex:
>
> -device pci-assign,host=2:00.0,addr=3.0,multifunction=on \
> -device pci-assign,host=2:00.1,addr=3.1
>
> Thanks,
>
> Alex