linux-kernel - Re: [RESEND 2][PATCH 0/4] Virtual Machine Time Accounting

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Message-Id: <200710151251.12981.borntraeger@de.ibm.com>
Date:	Mon, 15 Oct 2007 12:51:12 +0200
From:	Christian Borntraeger <borntraeger@...ibm.com>
To:	Laurent Vivier <Laurent.Vivier@...l.net>
Cc:	Ingo Molnar <mingo@...e.hu>,
	linux-kernel <linux-kernel@...r.kernel.org>
Subject: Re: [RESEND 2][PATCH 0/4] Virtual Machine Time Accounting

Am Montag, 10. September 2007 schrieb Laurent Vivier:
> The aim of these four patches is to introduce Virtual Machine time accounting.

I would move this line
       if (p->flags & PF_VCPU) {
               account_guest_time(p, cputime);
------>                p->flags &= ~PF_VCPU;  <---------
               return;
       }
into kvm_guest_exit. Otherwise a guest that is running very long in 
guest context would only get the first tick accounted as guest time, no?

Besides that, this looks good and should work for kvm on s390 as well. 
Thanks Laurent.

Christian


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