RE: [Xen-merge] disallow CONFIG_PCI_MSI

["Nakajima, Jun" <jun.nakajima@xxxxxxxxx>]

Vincent Hanquez wrote:
> On Mon, Dec 19, 2005 at 09:08:19AM -0800, Nakajima, Jun wrote:
>> Why is this patch required?
> 
> MSI is not yet supported by Xen.
> 
> http://bugzilla.xensource.com/bugzilla/show_bug.cgi?id=49

Okay, Xen needs to support MSI first. I don't expect significant impacts
to XenLinux though. A good thing with MSI is that we can eliminate IO
APIC things from dom0. I wrote part of the MSI code (e.g. switch irqs
and vectors) for Linux, so I'll talk to Keir. BTW, CONFIG_PCI_MMCONFIG
(required for PCI Express) is working fine in dom0.

Jun
---
Intel Open Source Technology Center

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