how to assign a pci device to guest [with qemu.git upstream]?

how to assign a pci device to guest [with qemu.git upstream]?

[Ren, Yongjie]

Hi folks,
I'm using kvm and qemu upstream on https://github.com/avikivity
The following command line was right for me about three weeks ago, but now I meet some error.
# qemu-system-x86_64 -m 1024 -smp 2 -device pci-assign,host=0e:00.0 -hda /root/rhel6u1.img
output error is like following.
qemu-system-x86_64: -device pci-assign,host=0d:00.0: Parameter 'driver' expects a driver name
Try with argument '?' for a list.

But I found the qemu document docs/qdev-device-use.txt said the following.
"The new way is
    -device pci-assign,host=ADDR,iommu=IOMMU,id=ID "
Even if I add "iommu=IOMMU,id=ID" to my command line, I will meet the same error.

I also found this page said the same command line with mine. 
http://www.linux-kvm.org/page/How_to_assign_devices_with_VT-d_in_KVM

Anybody know what's wrong with my command line? or this is a qemu bug ? thanks very much.

Best Regards,
     Yongjie Ren  (Jay)

Re: how to assign a pci device to guest [with qemu.git upstream]?

[Chris Wright]

* Ren, Yongjie (yongjie.ren@intel.com) wrote:
> I'm using kvm and qemu upstream on https://github.com/avikivity
> The following command line was right for me about three weeks ago, but now I meet some error.
> # qemu-system-x86_64 -m 1024 -smp 2 -device pci-assign,host=0e:00.0 -hda /root/rhel6u1.img
> output error is like following.
> qemu-system-x86_64: -device pci-assign,host=0d:00.0: Parameter 'driver' expects a driver name
> Try with argument '?' for a list.

Looks like you don't have device assignment support compiled in.
Start with the basics (assuming tree has hw/device-assignment.c):

did your ./configure output show:

KVM device assig. yes

and does your binary agree?

qemu-system-x86_64 -device ? 2>&1 | grep pci-assign

thanks,
-chris

RE: how to assign a pci device to guest [with qemu.git upstream]?

[Ren, Yongjie]

Chris,
Thanks very much for you kind help. 
I can't find hw/device-assignment.c in the qemu.git tree.
Avi,
I clone qemu from git://github.com/avikivity/qemu.git 
So device assignment is not available. But qemu-kvm.git has device-assignment code before kernel.org is down.
Any update for this issue?

Best Regards,
     Yongjie Ren  (Jay)

> -----Original Message-----
> From: Chris Wright [mailto:chrisw@sous-sol.org]
> Sent: Thursday, September 29, 2011 8:57 AM
> To: Ren, Yongjie
> Cc: KVM General
> Subject: Re: how to assign a pci device to guest [with qemu.git upstream]?
> 
> * Ren, Yongjie (yongjie.ren@intel.com) wrote:
> > I'm using kvm and qemu upstream on https://github.com/avikivity
> > The following command line was right for me about three weeks ago,
> but now I meet some error.
> > # qemu-system-x86_64 -m 1024 -smp 2 -device pci-assign,host=0e:00.0
> -hda /root/rhel6u1.img
> > output error is like following.
> > qemu-system-x86_64: -device pci-assign,host=0d:00.0: Parameter 'driver'
> expects a driver name
> > Try with argument '?' for a list.
> 
> Looks like you don't have device assignment support compiled in.
> Start with the basics (assuming tree has hw/device-assignment.c):
> 
> did your ./configure output show:
> 
> KVM device assig. yes
> 
> and does your binary agree?
> 
> qemu-system-x86_64 -device ? 2>&1 | grep pci-assign
> 
> thanks,
> -chris

Re: how to assign a pci device to guest [with qemu.git upstream]?

[Chris Wright]

* Ren, Yongjie (yongjie.ren@intel.com) wrote:
> Chris,
> Thanks very much for you kind help. 
> I can't find hw/device-assignment.c in the qemu.git tree.
> Avi,
> I clone qemu from git://github.com/avikivity/qemu.git 
> So device assignment is not available. But qemu-kvm.git has device-assignment code before kernel.org is down.
> Any update for this issue?

Are you using the master branch?  I noticed the github web defaults to
the memory/queue branch.

thanks,
-chris

Re: how to assign a pci device to guest [with qemu.git upstream]?

[Chris Wright]

* Chris Wright (chrisw@sous-sol.org) wrote:
> * Ren, Yongjie (yongjie.ren@intel.com) wrote:
> > Chris,
> > Thanks very much for you kind help. 
> > I can't find hw/device-assignment.c in the qemu.git tree.
> > Avi,
> > I clone qemu from git://github.com/avikivity/qemu.git 
> > So device assignment is not available. But qemu-kvm.git has device-assignment code before kernel.org is down.
> > Any update for this issue?
> 
> Are you using the master branch?  I noticed the github web defaults to
> the memory/queue branch.

BTW, if you hadn't used branches much before, something like this will
get you what you want:

$ git checkout -b master origin/master

Now you'll be on the master branch (and it should track upstream master
properly).

thanks,
-chris

RE: how to assign a pci device to guest [with qemu.git upstream]?

[Ren, Yongjie]

> -----Original Message-----
> From: Chris Wright [mailto:chrisw@sous-sol.org]
> Sent: Thursday, September 29, 2011 12:33 PM
> To: Ren, Yongjie
> Cc: Chris Wright; Avi Kivity; KVM General
> Subject: Re: how to assign a pci device to guest [with qemu.git upstream]?
> 
> * Chris Wright (chrisw@sous-sol.org) wrote:
> > * Ren, Yongjie (yongjie.ren@intel.com) wrote:
> > > Chris,
> > > Thanks very much for you kind help.
> > > I can't find hw/device-assignment.c in the qemu.git tree.
> > > Avi,
> > > I clone qemu from git://github.com/avikivity/qemu.git
> > > So device assignment is not available. But qemu-kvm.git has
> device-assignment code before kernel.org is down.
> > > Any update for this issue?
> >
> > Are you using the master branch?  I noticed the github web defaults to
> > the memory/queue branch.
> 
> BTW, if you hadn't used branches much before, something like this will
> get you what you want:
> 
> $ git checkout -b master origin/master
> 
> Now you'll be on the master branch (and it should track upstream master
> properly).
Oh, thanks a lot.  I didn't notice the qemu.git is using the 'memory/queue' branch by default.
I've switched it to the 'master' tree. It seems device assignment works fine now.
> 
> thanks,
> -chris

Re: how to assign a pci device to guest [with qemu.git upstream]?

[Avi Kivity]

On 09/29/2011 08:28 AM, Ren, Yongjie wrote:
> >  Now you'll be on the master branch (and it should track upstream master
> >  properly).
> Oh, thanks a lot.  I didn't notice the qemu.git is using the 'memory/queue' branch by default.
> I've switched it to the 'master' tree. It seems device assignment works fine now.
>

I changed it to default to 'master'.

-- 
error compiling committee.c: too many arguments to function