RE: [Xen-devel] [PATCH] Change PCI IRQ assignments

["Dugger, Donald D" <donald.d.dugger@xxxxxxxxx>]

Keir-

Called it in one, their BIOS has tables that match the PCI settings.

--
Don Dugger
"Censeo Toto nos in Kansa esse decisse." - D. Gale
Donald.D.Dugger@xxxxxxxxx
Ph: (303)440-1368 

>-----Original Message-----
>From: Keir Fraser [mailto:Keir.Fraser@xxxxxxxxxxxx] 
>Sent: Wednesday, June 07, 2006 7:19 AM
>To: Dugger, Donald D
>Cc: xen-devel@xxxxxxxxxxxxxxxxxxx
>Subject: Re: [Xen-devel] [PATCH] Change PCI IRQ assignments
>
>
>On 6 Jun 2006, at 22:27, Donald D. Dugger wrote:
>
>> Currently, the ACPI tables provided for an HVM Xen guest do 
>not include
>> tables for PCI devices.  This causes the guest OS to default 
>to IRQ 9 
>> for
>> all PCI devices.  The PCI code assigns half the PCI IRQs to 
>9 and the 
>> other
>> half to 11, creating the possibility of confusing certain 
>unamed OS's.
>> This patch avoids this issue by having the PCI code assign all PCI
>> interrupts to IRQ 9, matching the IRQ assignments from the 
>ACPI tables.
>
>How does QEMU deal with this possible confusion? Does it use different 
>BIOS tables?
>
>  -- Keir
>

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