linux-kernel - Re: [PATCH 2/2] s390/topology: add drawer scheduling domain level

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Message-ID: <20160613130647.GZ30909@twins.programming.kicks-ass.net>
Date:	Mon, 13 Jun 2016 15:06:47 +0200
From:	Peter Zijlstra <peterz@...radead.org>
To:	Heiko Carstens <heiko.carstens@...ibm.com>
Cc:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Martin Schwidefsky <schwidefsky@...ibm.com>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/2] s390/topology: add drawer scheduling domain level

On Mon, Jun 13, 2016 at 01:22:30PM +0200, Heiko Carstens wrote:
> Yes, and actually we are all virt/LPAR always, so this is unfortunately not
> very easy to do. And yes, I do agree that for the 1:1 case it most likely
> would make sense, however we don't have any run-time guarantee to stay 1:1.

One option would be to make it a boot option; such that the
administrator has to set it. At that point, if the admin creates
multiple LPARs its on him.