From mboxrd@z Thu Jan 1 00:00:00 1970 From: Carsten Otte Subject: Re: [PATCH/RFC] KVM: Adds support for halting in the kernel Date: Mon, 21 May 2007 13:00:01 +0200 Message-ID: <46517BB1.8010401@de.ibm.com> References: <20070518021848.8260.14857.stgit@novell1.haskins.net> Reply-To: carsteno-tA70FqPdS9bQT0dZR+AlfA@public.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Cc: kvm-devel-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org To: Gregory Haskins Return-path: In-Reply-To: <20070518021848.8260.14857.stgit-sLgBBP33vUGnsjUZhwzVf9HuzzzSOjJt@public.gmane.org> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: kvm-devel-bounces-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org Errors-To: kvm-devel-bounces-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org List-Id: kvm.vger.kernel.org Gregory Haskins wrote: > I was thinking about some of the issues that we are dealing with > w.r.t. signalling a sleeping userspace (eventfd, signals, etc). I was > wondering if perhaps we were looking at the problem the wrong way. Can we > perform halts in the kernel and therefore eliminate the need to signal > userspace all together? I put together a proof-of-concept patch to try out > this idea. This patch replaces the fd-signaling patch previously sent. > > Comments please. This pretty much looks like where we're heading on 390. We'll also go for a wait queue. Thumbs up. so long, Carsten ------------------------------------------------------------------------- This SF.net email is sponsored by DB2 Express Download DB2 Express C - the FREE version of DB2 express and take control of your XML. No limits. Just data. Click to get it now. http://sourceforge.net/powerbar/db2/