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Re: [Qemu-ppc] [PATCH v5 04/36] ppc/xive: introduce the XiveRouter model

From: Benjamin Herrenschmidt
Subject: Re: [Qemu-ppc] [PATCH v5 04/36] ppc/xive: introduce the XiveRouter model
Date: Thu, 22 Nov 2018 17:50:07 +1100
User-agent: Evolution 3.30.2 (3.30.2-2.fc29)

On Thu, 2018-11-22 at 15:44 +1100, David Gibson wrote:
> Sorry, didn't think of this in my first reply.
> 1) Does the hardware ever actually write back to the EAS?  I know it
> does for the END, but it's not clear why it would need to for the
> EAS.  If not, we don't need the setter.

Nope, though the PAPR model will via hcalls

> 2) The signatures are a bit odd here.  For the setter, a value would
> make sense than a (XiveEAS *), since it's just a word.  For the getter
> you could return the EAS value directly rather than using a pointer -
> there's already a valid bit in the EAS so you can construct a value
> with that cleared if the lisn is out of bounds.

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