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Re: [Xen-devel] Genapic in 32-bit Dom0 (Was : More Problems booting 32-b

To: Chris Wright <chrisw@xxxxxxxx>
Subject: Re: [Xen-devel] Genapic in 32-bit Dom0 (Was : More Problems booting 32-bit Domain 0 on ES7000 x86_64)
From: Keir Fraser <Keir.Fraser@xxxxxxxxxxxx>
Date: Sat, 6 Aug 2005 10:33:52 +0100
Cc: "Magolan, John F" <John.Magolan@xxxxxxxxxx>, xen-devel@xxxxxxxxxxxxxxxxxxx, "Subrahmanian, Raj" <raj.subrahmanian@xxxxxxxxxx>, "Vessey, Bruce A" <Bruce.Vessey@xxxxxxxxxx>
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On 5 Aug 2005, at 18:19, Chris Wright wrote:

No, try giving domain0 genapic a go.

I suspect it will be an issue with x86_64 smp as well.  The apic stuff
is on the plate for cleanup for merge as well.  Could use some insight
re: xen's apic handling.

To a first approximation: Xen owns the local APICs, but domain0 owns the I/O APICs. All IOAPIC writes go via Xen which can rewrite them if necessary (at the moment that's limited to changing the local-apic target).

 -- Keir

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