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Re: [Xen-devel] Multiple IRQ's in HVM for Windows

To: James Harper <james.harper@xxxxxxxxxxxxxxxx>, <xen-devel@xxxxxxxxxxxxxxxxxxx>
Subject: Re: [Xen-devel] Multiple IRQ's in HVM for Windows
From: Keir Fraser <keir.fraser@xxxxxxxxxxxxx>
Date: 2008年12月27日 09:57:35 +0000
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Thread-topic: [Xen-devel] Multiple IRQ's in HVM for Windows
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On 27/12/2008 09:35, "James Harper" <james.harper@xxxxxxxxxxxxxxxx> wrote:
> I'm not sure if I understand the question. Under my drivers I just do:
>
> hvm_set_parameter(HVM_PARAM_CALLBACK_IRQ, irq_number);
>
> where irq_number is what Windows assigns the platform PCI device, and is
> normally 28 when the HAL is APIC, otherwise it is 5, assuming no qemu
> network adapters or passed through PCI devices.
>
> I think there is another way of setting the IRQ using the PCI address,
> but that doesn't appear to be required here.
So where will irq_number come from when every event channel needs one?
 -- Keir
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