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Re: [Qemu-devel] [PATCH 1/2] Route PC irqs to ISA bus instead of i8259 d

From: Olaf Dabrunz
Subject: Re: [Qemu-devel] [PATCH 1/2] Route PC irqs to ISA bus instead of i8259 directly
Date: Mon, 10 Aug 2009 15:20:47 +0200
User-agent: Mutt/1.5.17 (2007-11-01)

On 10-Aug-09, Avi Kivity wrote:
> On 08/10/2009 12:45 PM, Stefan Assmann wrote:
>> Does qemu support multiple IO-APICs? I guess not so no need for boot
>> interrupts. (If yes then there would be the question how close you
>> really want to be to existing hardware.)
> Not at present.  We've considered adding IOAPICs to reduce interrupt 
> sharing, but MSI solves the problem much more neatly.

Yes, all modern operating systems that come to my mind support MSIs, so
as long as you do not want to run some old system, this is ok. I also
guess that you do not try to emulate one of the chipsets that has a
broken MSI implementation.

Olaf Dabrunz (Olaf.Dabrunz <at> gmx.net)

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