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Message-ID: <OFDC616681.53A831E8-ONC125750D.0046F124-C125750D.004B8673@de.ibm.com>
Date: Wed, 26 Nov 2008 14:44:56 +0100
From: Joachim Fenkes <FENKES@...ibm.com>
To: Roland Dreier <rdreier@...co.com>
Cc: Alexander Schmidt1 <ALEXSCHM@...ibm.com>,
Christoph Raisch <RAISCH@...ibm.com>,
OF-EWG <ewg@...ts.openfabrics.org>,
OF-General <general@...ts.openfabrics.org>,
Hoang-Nam Nguyen <HNGUYEN@...ibm.com>,
LKML <linux-kernel@...r.kernel.org>,
LinuxPPC-Dev <linuxppc-dev@...abs.org>,
Roland Dreier <rolandd@...co.com>,
Stefan Roscher <stefan.roscher@...ibm.com>
Subject: Re: [PATCH] IB/ehca: Change misleading error message
Roland Dreier <rdreier@...co.com> wrote on 26.11.2008 00:13:51:
> That's too bad... I applied this patch but out of curiousity, why
> doesn't the hot-remove/hot-add work? I would have thought that
> re-registering all of memory after the hot-add would do the right thing.
That's right, but right now, we simply try to register all of memory from
KERNELBASE to high_memory, which works right until we have memory holes in
the middle; then the hypervisor will reject our page registrations. Same
goes for huge (16GB) pages, by the way. We're working on a solution to
this.
Cheers,
Joachim
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