Xen devel - Dec 2011 - [PATCH] xen-qemu: register virtual iommu device on qemu pci bus

Attached patch is for qemu to register iommu device on pci bus. Guest OS 
requires this to access iommu pci config space in some cases.
Thanks,
Wei

Signed-off-by: Wei Wang <wei.wang2@amd.com>


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Wei Wang2 writes ("[Xen-devel] [PATCH] xen-qemu: register virtual iommu
device on qemu pci bus"):
> Attached patch is for qemu to register iommu device on pci bus. Guest OS 
> requires this to access iommu pci config space in some cases.
Thanks for this submission.

However, we are trying to focus development on the new xen-supporting
upstream qemu branches.

This old qemu branch is basically dead.  We will have to give it
bugfixes and security fixes, it in parallel with the new trees, for a
long time (because old guests may need it).  So for that reason I
would really prefer not to add new features to it.

Would you be able to rebase your work on the upstream qemu ?  You will
need Anthony Perard''s PCI passthrough series of course, and you will
also need to liase with qemu upstream (so I''ve CC''d their
list) since
it will be their tree that you''ll be targeting.

If there is a particular reason why this work should be in
qemu-xen-unstable then please do say.  I''m open to being persuaded.

Thanks,
Ian.

On Thursday 15 December 2011 18:33:33 Ian Jackson wrote:
> Wei Wang2 writes ("[Xen-devel] [PATCH] xen-qemu: register virtual
iommu
device on qemu pci bus"):
> > Attached patch is for qemu to register iommu device on pci bus. Guest
OS
> > requires this to access iommu pci config space in some cases.
>
> Thanks for this submission.
>
> However, we are trying to focus development on the new xen-supporting
> upstream qemu branches.
>
> This old qemu branch is basically dead.  We will have to give it
> bugfixes and security fixes, it in parallel with the new trees, for a
> long time (because old guests may need it).  So for that reason I
> would really prefer not to add new features to it.
>
> Would you be able to rebase your work on the upstream qemu ?  You will
> need Anthony Perard''s PCI passthrough series of course, and you
will
> also need to liase with qemu upstream (so I''ve CC''d their
list) since
> it will be their tree that you''ll be targeting.
>
> If there is a particular reason why this work should be in
> qemu-xen-unstable then please do say.  I''m open to being
persuaded.
>
> Thanks,
> Ian.
Sure, I will do that. Thanks for the suggestion
Wei.