linux-kernel - Re: [PATCH 0/5 V5] Avoid soft lockup message when KVM is stopped by host

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Message-ID: <4EEF35B5.2090005@redhat.com>
Date:	Mon, 19 Dec 2011 15:01:41 +0200
From:	Avi Kivity <avi@...hat.com>
To:	Eric B Munson <emunson@...bm.net>
CC:	mingo@...hat.com, hpa@...or.com, arnd@...db.de,
	ryanh@...ux.vnet.ibm.com, aliguori@...ibm.com, mtosatti@...hat.com,
	jeremy.fitzhardinge@...rix.com, levinsasha928@...il.com,
	Jan Kiszka <jan.kiszka@...mens.com>, kvm@...r.kernel.org,
	linux-arch@...r.kernel.org, x86@...nel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 0/5 V5] Avoid soft lockup message when KVM is stopped
 by host

On 12/15/2011 08:53 PM, Eric B Munson wrote:
> I am working on V7 to incorporate the __this_cpu_and suggestion, would you
> consider that for inclusion and we can continue discussing the need for the
> preemption notification work?  

Okay.

> I think that having a guest complain when the
> host is so loaded that the guest watchdog threads can't make any progress is
> desirable behavior, it may be the only notification that an admin gets that a
> particular host is over loaded.

It's the wrong admin, consider a cloud scenario where the host admin and
guest admin are different people.

Notification on host overload (to initiate migration, say) is a good
idea, but it would be a different mechanism.

-- 
error compiling committee.c: too many arguments to function

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