From mboxrd@z Thu Jan 1 00:00:00 1970 From: Zachary Amsden Subject: Re: [PATCH v4: kvm 1/4] Code motion. Separate timer intialization into an indepedent function. Date: Wed, 30 Sep 2009 05:51:29 -1000 Message-ID: <4AC37E81.8080104@redhat.com> References: <4AC1C59F.6010703@redhat.com> <1254260317-3490-1-git-send-email-zamsden@redhat.com> <4AC31AA5.4060609@redhat.com> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Cc: kvm@vger.kernel.org, linux-kernel@vger.kernel.org, Marcelo Tosatti To: Avi Kivity Return-path: In-Reply-To: <4AC31AA5.4060609@redhat.com> Sender: linux-kernel-owner@vger.kernel.org List-Id: kvm.vger.kernel.org On 09/29/2009 10:45 PM, Avi Kivity wrote: > On 09/29/2009 11:38 PM, Zachary Amsden wrote: >> Signed-off-by: Zachary Amsden > > > Looks good. > > Is anything preventing us from unifying the constant_tsc and !same > paths? We could just do a quick check in the notifier, see the tsc > frequency hasn't changed, and return. Actually, yes. On constant_tsc processors, the processor frequency may still change, however the TSC frequency does not change with it. I actually have both of these kinds of processors (freq changes with constant TSC and freq changes with variable TSC) so I was able to test both of these cases. Zach