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 for <linuxppc-dev@lists.ozlabs.org>; Tue,  3 Oct 2017 15:26:58 +1100 (AEDT)
Date: Tue, 3 Oct 2017 14:36:15 +1100
From: David Gibson <david@gibson.dropbear.id.au>
To: =?iso-8859-1?Q?C=E9dric?= Le Goater <clg@kaod.org>
Cc: linuxppc-dev@lists.ozlabs.org, Michael Ellerman <mpe@ellerman.id.au>,
 Benjamin Herrenschmidt <benh@kernel.crashing.org>
Subject: Re: [PATCH 0/2] powerpc/xive: fix CPU hot unplug
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On Mon, Oct 02, 2017 at 06:27:20PM +0200, C=E9dric Le Goater wrote:
> On 09/23/2017 10:26 AM, C=E9dric Le Goater wrote:
> > Hi,
> >=20
> > Here are a couple of small fixes to support CPU hot unplug. There are
> > still some issues to be investigated as, in some occasions, after a
> > couple of plug and unplug, the cpu which was removed receives a 'lost'
> > interrupt. This showed to be the decrementer under QEMU.
>=20
> So this seems to be a QEMU issue only which can be solved by=20
> removing the DEE bit from the LPCR on P9 processor when the CPU=20
> is stopped in rtas. PECE3 bit on P8 processors.=20
>=20
> I think these patches are valuable fixes for 4.14. The first=20
> is trivial and the second touches the common xive part but it
> is only called on the pseries platform. =20
>=20
> Could you please take a look ?

Sorry, I think I've missed something here.

Is there a qemu bug involved in this?  Has there been a patch sent
that I didn't spot?

--=20
David Gibson			| I'll have my music baroque, and my code
david AT gibson.dropbear.id.au	| minimalist, thank you.  NOT _the_ _other_
				| _way_ _around_!
http://www.ozlabs.org/~dgibson

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