Alexander Graf wrote:
On May 21, 2008, at 6:07 PM, Xu, Anthony wrote:
If use this method, we can share same IA64 guest BIOS between XEN/IA64
and KVM/IA64.
I'm not sure if I'm too fond of that method. It does not look too
compliant with how PCs work these days. You might want to use that
formula on the second IOAPIC only, so all PCI devices get routed to pins
25-48. Remember that you still have to provide "legacy boot interrupts"
that map these to the first IOAPIC for Operating Systems that don't know
how to handle high pin interrupts.
I am not sure which OSs that would be, but I'm pretty sure all the PCIe
PCI-bridge vendors didn't implement that feature for nothing.
Hi Alexander,
I think this will vary depending on what architecture we talk about, for
ia64 I don't think it's an issue since we don't really have to suffer
from the legacy PIC mode found in x86 boxes, but it may be easier to
simply keep the code shared.
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