From mboxrd@z Thu Jan 1 00:00:00 1970 From: Avi Kivity Subject: Re: [PATCH 0/5 V5] Avoid soft lockup message when KVM is stopped by host Date: Thu, 22 Dec 2011 11:59:54 +0200 Message-ID: <4EF2FF9A.4080502@redhat.com> References: <1323116344-17911-1-git-send-email-emunson@mgebm.net> <4EDF7B0D.4060001@redhat.com> <20111214121622.GB18317@amt.cnet> <4EE8B53C.6070502@redhat.com> <20111214182101.GB21945@amt.cnet> <4EE9CA1C.3010801@redhat.com> <20111216093149.GA26982@amt.cnet> <4EEF351E.8040002@redhat.com> <20111219161108.GA15848@amt.cnet> <20111219175047.GA17347@amt.cnet> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Cc: Eric B Munson , mingo@redhat.com, hpa@zytor.com, arnd@arndb.de, ryanh@linux.vnet.ibm.com, aliguori@us.ibm.com, jeremy.fitzhardinge@citrix.com, levinsasha928@gmail.com, Jan Kiszka , kvm@vger.kernel.org, linux-arch@vger.kernel.org, x86@kernel.org, linux-kernel@vger.kernel.org To: Marcelo Tosatti Return-path: In-Reply-To: <20111219175047.GA17347@amt.cnet> Sender: linux-arch-owner@vger.kernel.org List-Id: kvm.vger.kernel.org On 12/19/2011 07:50 PM, Marcelo Tosatti wrote: > > > > Maybe it is good (not sure), need to look into schedstats and think of > > cases that would break legitimate guest hangs. And it probably also > > affects the position of clearing the flag on the guest side as its > > currently done in Eric's patchset. > > Is the task going to be TASK_UNINTERRUPTIBLE with SIGSTOP? Don't think > so. No. > Note "Preemption while TASK_RUNNING or TASK_UNINTERRUPTIBLE" is not > functional for guest-paused-via-QEMU-monitor case. Right, it's a different case. Note SIGCONT can be trapped, so it's similar to monitor cont. -- error compiling committee.c: too many arguments to function