RE: [Xen-devel] GPLPV Drivers 0.9.11-pre4 hang during boot - Windows XP Pro SP2

["James Harper" <james.harper@xxxxxxxxxxxxxxxx>]

> 
> James Harper wrote:
> > Everything seems okay in that one too.
> >
> > If you can spare the time, please now try replacing your xenpci.sys
with
> > the file in xenpci-xp-debug.zip, and try it again. This will tell me
if
> > dom0 is sending the request at all and we are dropping it for some
> > reason.
> 
> Done. Thanks for the "off-line" debugging.
> 

Hmmm... I think I can see the problem - XenPCI is getting IRQ 5, and IRQ
5 is being assigned to all the subsequent devices that XenPCI
enumerates, and due to the slightly dodgy way I dish out interrupts to
other devices this maybe isn't working. I should probably have spotted
that earlier but I wasn't looking for it!

I'll see if I can come up with a fix of some sort, hopefully I'll have
something in a few minutes.

Btw, on my test machines, XenPCI always seems to get IRQ 28 and the
other devices all get IRQ 11. Any idea why yours would all be getting
IRQ 5? My guess would be that you don't have APIC enabled, or that you
didn't have it enabled when you first installed. Either way, it's a bug
for the GPLPV drivers to behave this way so I'll fix it. I just hope
there are enough interrupts to go around!

Thanks

James

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