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

[Keir Fraser <Keir.Fraser@xxxxxxxxxxxx>]

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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