From mboxrd@z Thu Jan 1 00:00:00 1970 From: Rik van Riel Subject: Re: [PATCH 4/4] kvm,rcu: use RCU extended quiescent state when running KVM guest Date: Thu, 05 Feb 2015 15:19:13 -0500 Message-ID: <54D3D041.7090408@redhat.com> References: <1423154134-17391-1-git-send-email-riel@redhat.com> <1423154134-17391-5-git-send-email-riel@redhat.com> <54D39DF0.3020109@de.ibm.com> <54D39FD5.2040402@redhat.com> <20150205175014.GG5370@linux.vnet.ibm.com> <54D3B1CF.1000301@redhat.com> <20150205185627.GK5370@linux.vnet.ibm.com> <54D3BE4B.9090301@redhat.com> <20150205192704.GM5370@linux.vnet.ibm.com> Mime-Version: 1.0 Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: 7bit Cc: Christian Borntraeger , kvm@vger.kernel.org, linux-kernel@vger.kernel.org, mtosatti@redhat.com, mingo@kernel.org, ak@linux.intel.com, oleg@redhat.com, masami.hiramatsu.pt@hitachi.com, fweisbec@gmail.com, lcapitulino@redhat.com, pbonzini@redhat.com To: paulmck@linux.vnet.ibm.com Return-path: In-Reply-To: <20150205192704.GM5370@linux.vnet.ibm.com> Sender: linux-kernel-owner@vger.kernel.org List-Id: kvm.vger.kernel.org On 02/05/2015 02:27 PM, Paul E. McKenney wrote: > On Thu, Feb 05, 2015 at 02:02:35PM -0500, Rik van Riel wrote: >> Looking at context_tracking.h, I see the >> function context_tracking_cpu_is_enabled(). >> >> That looks like it should do the right thing >> in this case. > > Right you are -- that same check is used to guard the > context_tracking_user_enter() function's call to rcu_user_enter(). My test suggests it is working. v2 incoming :)