From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752402AbXCIAW2 (ORCPT ); Thu, 8 Mar 2007 19:22:28 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752460AbXCIAW2 (ORCPT ); Thu, 8 Mar 2007 19:22:28 -0500 Received: from gateway-1237.mvista.com ([63.81.120.158]:34614 "EHLO gateway-1237.mvista.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752402AbXCIAW0 (ORCPT ); Thu, 8 Mar 2007 19:22:26 -0500 Subject: Re: hardwired VMI crap From: Daniel Walker Reply-To: dwalker@mvista.com To: Zachary Amsden Cc: Jeremy Fitzhardinge , Ingo Molnar , tglx@linutronix.de, john stultz , akpm@linux-foundation.org, Linus Torvalds , LKML , Pratap Subrahmanyam , Rusty Russell , Andi Kleen , Daniel Hecht , Daniel Arai , Chris Wright , Virtualization Mailing List In-Reply-To: <45F0A254.4020002@vmware.com> References: <45EF175D.6030609@vmware.com> <1173302503.24738.795.camel@localhost.localdomain> <45EF372E.7030600@goop.org> <1173308717.24738.898.camel@localhost.localdomain> <45EF49E9.7040509@vmware.com> <20070308091019.GA19460@elte.hu> <45EFE010.7080108@vmware.com> <1173352154.24738.1023.camel@localhost.localdomain> <45F0761C.6060107@vmware.com> <45F07D07.5090003@goop.org> <20070308213458.GA24634@elte.hu> <45F09EAE.6090908@goop.org> <45F0A254.4020002@vmware.com> Content-Type: text/plain Date: Thu, 08 Mar 2007 16:22:23 -0800 Message-Id: <1173399743.20300.3.camel@dwalker1> Mime-Version: 1.0 X-Mailer: Evolution 2.8.2.1 (2.8.2.1-3.fc6) Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Thu, 2007-03-08 at 15:55 -0800, Zachary Amsden wrote: > > We just don't drive the local timer interrupts through the APIC, we make > hypercalls to schedule local timer alarms. Which is something we must > do for UP kernels as well, which use the PIT / PIC. So there is a need > for having clockevents code which doesn't program timers through the APIC. This getting a bit confusing to me .. When your talking about "local timer interrupts" are you speaking of a periodic interrupt from the lapic , or the jiffies increment inside the virtual machine? Daniel