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Re: [Qemu-ppc] [PATCH 09/25] spapr: introduce handlers for XIVE interrup


From: Benjamin Herrenschmidt
Subject: Re: [Qemu-ppc] [PATCH 09/25] spapr: introduce handlers for XIVE interrupt sources
Date: Sat, 02 Dec 2017 08:26:02 -0600

On Tue, 2017-11-28 at 18:18 +0000, C├ędric Le Goater wrote:
> AFAICT, it doesn't. LSI events are configured as the other XIVE interrupts. 
> The level is converted in the P bit and the Q bit should always be zero.
> So I should be able to simplify the proposed model which still is mimicking 
> XICS  ... I will take a look at it. 
> 
> There are a sort of special degenerated LSIs but these are for bringup.

Not really. So for MSIs you don't need your state flags.

For LSIs, you do need the "asserted" one that keeps track of the LSI
input state. See my other note with the actual states.

Cheers,
Ben.




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