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Re: [Xen-devel] Re: [PATCH 1/2] x86, hvm: allow another vcpu to receive

To: Kouya Shimura <kouya@xxxxxxxxxxxxxx>
Subject: Re: [Xen-devel] Re: [PATCH 1/2] x86, hvm: allow another vcpu to receive PIT IRQ (support kexec/kdump on hvm)
From: Keir Fraser <keir.fraser@xxxxxxxxxxxxx>
Date: Wed, 01 Jul 2009 20:33:11 +0100
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Thread-topic: [Xen-devel] Re: [PATCH 1/2] x86, hvm: allow another vcpu to receive PIT IRQ (support kexec/kdump on hvm)
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On 01/07/2009 14:09, "Keir Fraser" <keir.fraser@xxxxxxxxxxxxx> wrote:

> On 01/07/2009 09:48, "Kouya Shimura" <kouya@xxxxxxxxxxxxxx> wrote:
> 
>>> Hmmm... Okay I think this might be workable. Device passthru and vpt
>>> subsystems could be fired off of whichever vcpu owns the LAPIC identifier
>>> currently programmed into IOAPIC0:PIN0, rather than being hardwired to
>>> VCPU0.
>> 
>> Okay, but 2/2 patch can wait. First of all, I'll remake 1/2 patch.
> 
> I'll deal with virtual wire via ioapic myself.

Take a look at changeset 19877. It does the basics of what you need. Vpt.c
logic probably still will need tweaking however.

 -- Keir



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