| To: | "Dong, Eddie" <eddie.dong@xxxxxxxxx> |
|---|---|
| Subject: | [Xen-devel] Re: IO_APIC in para-guest |
| From: | Keir Fraser <Keir.Fraser@xxxxxxxxxxxx> |
| Date: | Wed, 8 Mar 2006 14:44:45 +0000 |
| Cc: | xen-devel Devel <xen-devel@xxxxxxxxxxxxxxxxxxx> |
| Delivery-date: | 2006年3月08日 14:45:12 +0000 |
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On 8 Mar 2006, at 13:51, Dong, Eddie wrote:
You should probably speak to Jun about it. The idea is that Xen does boot-time setup but then hands off control to domain0. This is necessary for platforms that require fuller ACPI support than we were prepared to put in Xen. Consider an interrupt source that needs to be routed by the OS by executing AML code.When thinking more about IO_APIC virtualization in Itanium, I got a confuse: How is io_apic.c used in xenlinux (X86)? It looks like all the machine resource of io_apic is handled in xen (xen/arch/x86/irq.c), and the PIRQ based on event channel can be handled by pirq_type in linux/arch/xen/kernel/evtchn.c pretty well? Then what is the function of file io_apic.c?
-- Keir _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel
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