linux-kernel - Re: [RFC -v3 PATCH 2/3] sched: add yield

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Message-ID: <1294164354.2016.187.camel@laptop>
Date:	Tue, 04 Jan 2011 19:05:54 +0100
From:	Peter Zijlstra <a.p.zijlstra@...llo.nl>
To:	Rik van Riel <riel@...hat.com>
Cc:	Hillf Danton <dhillf@...il.com>, kvm@...r.kernel.org,
	linux-kernel@...r.kernel.org, Avi Kiviti <avi@...hat.com>,
	Srivatsa Vaddagiri <vatsa@...ux.vnet.ibm.com>,
	Mike Galbraith <efault@....de>,
	Chris Wright <chrisw@...s-sol.org>
Subject: Re: [RFC -v3 PATCH 2/3] sched: add yield_to function

On Tue, 2011-01-04 at 12:53 -0500, Rik van Riel wrote:
> One host can have a few RT guests, say a host with 8 CPUs
> can have up to 6 or 7 RT VCPUs.  Those guests get top
> priority. 

RT guests don't make sense, there's nowhere near enough infrastructure
for that to work well.

I'd argue that KVM running with RT priority is a bug.
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