From mboxrd@z Thu Jan 1 00:00:00 1970 From: Rik van Riel Subject: Re: Re: [patch 14/21] Xen-paravirt: Add XEN config options and disableunsupported config options. Date: Sat, 17 Feb 2007 10:06:40 -0500 Message-ID: <45D71A00.5080104@redhat.com> References: <45D62759.7080006@vmware.com> <45D63255.2070801@vmware.com> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <45D63255.2070801@vmware.com> List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xensource.com Errors-To: xen-devel-bounces@lists.xensource.com To: Dan Hecht Cc: Zachary Amsden , xen-devel@lists.xensource.com, Andi Kleen , Steven Hand , linux-kernel@vger.kernel.org, Ian Pratt , Chris Wright , virtualization@lists.osdl.org, Andrew Morton , Keir Fraser , Christian Limpach List-Id: virtualization@lists.linuxfoundation.org Dan Hecht wrote: > Yes, and regardless of whether you run your periodic timer slower than > HZ, calibrating time in a VM is always difficult due to the fact the > kernel is time sharing the physical cpu. Why not just ask the > underlying hypervisor? Upstream Xen does just that. I'm guessing we'll want something similar for KVM paravirt. -- Politics is the struggle between those who want to make their country the best in the world, and those who believe it already is. Each group calls the other unpatriotic.