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Re: [PATCH v2] xen/arm: implement GICD_I[S/C]ACTIVER reads

Hi Bertrand,

On 17/04/2020 16:16, Bertrand Marquis wrote:
It seems that the problem is a bit bigger then expected and will need more discussion and thinking. I did some research on my side and there are several design possible depending on what should be the goal performance or real-time behaviour (going from just give the status we have to fire a service interrupts when any interrupts is acked by a guest to refresh our internal status).

In the short term, could we not agree to fix the typo by returning always 0 and start a discussion on the vgic implementation ?

I have already pointed out multiple time now ([1], [2]) that I would not oppose the temporary solution. I think this is a matter of someone (Stefano?) to submit it :).


[1] https://lists.xenproject.org/archives/html/xen-devel/2019-11/msg01642.html [2] https://lists.xenproject.org/archives/html/xen-devel/2020-04/msg00459.html

Julien Grall



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