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Re: [Qemu-devel] [PATCH RFC V2 1/4] Use Aff1 with mpidr


From: Pavel Fedin
Subject: Re: [Qemu-devel] [PATCH RFC V2 1/4] Use Aff1 with mpidr
Date: Wed, 27 May 2015 21:03:55 +0300

 Hello!

> I think encoding should be CPU type specific i.e. not defined by what
> GIC can support and once we add CPU type with 8 cores, it would provide
> it's own version of mpidr_read since it would be defined by spec
> how to encode aff0.

 I have redone this thing from scratch:
https://lists.gnu.org/archive/html/qemu-devel/2015-05/msg04495.html
My implementation does exactly this. It simply introduces CPU-specific MPIDR 
value which
CPUs can set as they wish. Also this is used by KVM because KVM has its own 
ideas about
how CPUs are clustered.
I posted that without RFC, because i think it's ready for application, but my 
message
seems to have been lost. Looks like i forgot Cc to the maintainer. My current 
vGICv3
work-in-progress is based on this.
 If Shlomo does not respond until friday, i think i'll post a new vGICv3 series 
based on
master.

Kind regards,
Pavel Fedin
Expert Engineer
Samsung Electronics Research center Russia





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