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From: Avi Kivity <avi@redhat.com>
To: eak@us.ibm.com
Cc: qemu-devel@nongnu.org
Subject: Re: [Qemu-devel] [PATCH 2/2] Add code to override IRQ 0 to INTI 2
Date: Mon, 27 Oct 2008 22:02:09 +0200	[thread overview]
Message-ID: <49061E41.2070809@redhat.com> (raw)
In-Reply-To: <49061B2B.702@redhat.com>

Avi Kivity wrote:
>
> (what's irq 2 connected to now?)
>

Oh, of course irq 2 is only available on the ioapic; on the pic it is 
used for cascading.

If we can't find a free interrupt, we can always connect it to interrupt 
5; that will reduce the number of pci interrupts to two.  But we can 
implement apic mode and use lines 16-23 (if we add another ioapic, 16-47).

-- 
I have a truly marvellous patch that fixes the bug which this
signature is too narrow to contain.

      parent reply	other threads:[~2008-10-27 20:02 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-10-27 18:26 [Qemu-devel] [PATCH 2/2] Add code to override IRQ 0 to INTI 2 Beth Kon
2008-10-27 19:48 ` Avi Kivity
2008-10-27 19:52   ` Anthony Liguori
2008-10-27 23:02     ` Beth Kon
2008-10-28 12:47     ` Avi Kivity
2008-10-27 20:02   ` Avi Kivity [this message]

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