[Xen-devel] [PATCH 0/3][RFC] MSI/MSI-X support for dom0/driver domain

["Jiang, Yunhong" <yunhong.jiang@xxxxxxxxx>]

The attached patches add MSI/MSI-x support for domain0/driver domain.

I have tried it on x86_64 host and at least my E1000 network card works.
Because some issues are not certain, especially for driver domain
support, so I do want to get some feedback before further work. 

The basic idea of the msi/msi-x support including:
1) Keep msi/msix configuration space access and msi-x mmio access in
domain0.
2) xen has no idea of msi/msi-x specific information, but will ack the
interrupt. A new interrupt type msi_irq_type is added, with similar
function as IOAPIC edge interrupt.
3) Keep PIRQ as a global resource controlled by domain0 (except those
owned by xen).

The new_file.patch just copy files that will be changed to sparse tree.
The msi_xen_dom0.patch support xen/domain0 side.
The msi_domU.patch support for driver domain.
I listed the issues in following mails.

Hope your feedback.

Thanks
Yunhong Jiang

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