From: Christian Borntraeger <borntraeger@de.ibm.com>
To: Jeremy Fitzhardinge <jeremy@goop.org>
Cc: Rusty Russell <rusty@rustcorp.com.au>,
kvm-devel@lists.sourceforge.net, Ingo Molnar <mingo@elte.hu>,
linux-kernel@vger.kernel.org,
virtualization@lists.linux-foundation.org
Subject: Re: [PATCH/RFC] stop_machine: make stop_machine_run more virtualization friendly
Date: Thu, 8 May 2008 18:23:35 +0200 [thread overview]
Message-ID: <200805081823.35696.borntraeger@de.ibm.com> (raw)
In-Reply-To: <48231518.9010209@goop.org>
Am Donnerstag, 8. Mai 2008 schrieb Jeremy Fitzhardinge:
> > Sorry, forgot to mention. Its kvm.git from 2 days ago on s390.
> >
>
> And on s390 cpu_relax yields the vcpu? That's not common behaviour
> across architectures.
Yes, cpu_relax on s390 calls diagnose 44. Diagnose 44 translates to yield on
z/VM and LPAR. Guessing from the number of the diagnose, I think it was used
on z/VM for timeslice yielding long before Linux came to s390.
next prev parent reply other threads:[~2008-05-08 16:23 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-05-08 13:20 [PATCH/RFC] stop_machine: make stop_machine_run more virtualization friendly Christian Borntraeger
2008-05-08 13:33 ` Jeremy Fitzhardinge
2008-05-08 14:41 ` Christian Borntraeger
2008-05-08 14:58 ` Jeremy Fitzhardinge
2008-05-08 16:23 ` Christian Borntraeger [this message]
2008-05-09 1:10 ` Rusty Russell
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