From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1030688AbXCHVsv (ORCPT ); Thu, 8 Mar 2007 16:48:51 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1030684AbXCHVsu (ORCPT ); Thu, 8 Mar 2007 16:48:50 -0500 Received: from ug-out-1314.google.com ([66.249.92.174]:58934 "EHLO ug-out-1314.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1030688AbXCHVst (ORCPT ); Thu, 8 Mar 2007 16:48:49 -0500 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=beta; h=received:message-id:date:from:to:subject:mime-version:content-type:content-transfer-encoding:content-disposition; b=PPVqSNuF5xwsQ/84le3Tr4XgtntcFAMpohhKD4mGMoDFOA/b7H5Hbz1mjAt7P3xpgwLI0IDkMVDpvwDXK3VWACLK4r4NFx/VisTXhgYsC71+5Od6Px+CJXs53AqkVJKtGISFDvoGqnasiPUOzShNrdAdxdHaT3kuLT5AroWraRI= Message-ID: <9c21eeae0703081348i713c996bked9ebe2af76bc2db@mail.gmail.com> Date: Thu, 8 Mar 2007 13:48:43 -0800 From: "David Brown" To: "Linux Kernel Mailing List" Subject: KVM and rtc missing interupts 2.6.21-rc3 MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Content-Disposition: inline Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org When ever I try and start a guest OS with kvm I get a lot of these rtc missing interupt messages from the kernel [ 468.510878] rtc: lost some interrupts at 1024Hz. [ 468.530876] rtc: lost some interrupts at 1024Hz. [ 468.550868] rtc: lost some interrupts at 1024Hz. [ 468.570864] rtc: lost some interrupts at 1024Hz. [ 468.590856] rtc: lost some interrupts at 1024Hz. [ 468.610850] rtc: lost some interrupts at 1024Hz. [ 468.630844] rtc: lost some interrupts at 1024Hz. [ 468.650839] rtc: lost some interrupts at 1024Hz. [ 468.670832] rtc: lost some interrupts at 1024Hz. [ 468.690826] rtc: lost some interrupts at 1024Hz. [ 468.710819] rtc: lost some interrupts at 1024Hz. [ 468.730813] rtc: lost some interrupts at 1024Hz. [ 468.750807] rtc: lost some interrupts at 1024Hz. [ 468.770801] rtc: lost some interrupts at 1024Hz. [ 468.790795] rtc: lost some interrupts at 1024Hz. [ 468.810790] rtc: lost some interrupts at 1024Hz. [ 468.830783] rtc: lost some interrupts at 1024Hz. [ 468.850778] rtc: lost some interrupts at 1024Hz. [ 468.870774] rtc: lost some interrupts at 1024Hz. [ 468.890772] rtc: lost some interrupts at 1024Hz. [ 468.910760] rtc: lost some interrupts at 1024Hz. [ 468.930754] rtc: lost some interrupts at 1024Hz. I don't have the dynamic ticker set or some of the other high resolution timer things set # CONFIG_TICK_ONESHOT is not set # CONFIG_NO_HZ is not set # CONFIG_HIGH_RES_TIMERS is not set I do have the rtc group selected as modules though CONFIG_RTC=m CONFIG_GEN_RTC=m CONFIG_GEN_RTC_X=y ... # # Real Time Clock # CONFIG_RTC_LIB=m CONFIG_RTC_CLASS=m # # RTC interfaces # CONFIG_RTC_INTF_SYSFS=m CONFIG_RTC_INTF_PROC=m CONFIG_RTC_INTF_DEV=m CONFIG_RTC_INTF_DEV_UIE_EMUL=y # # RTC drivers # CONFIG_RTC_DRV_CMOS=m CONFIG_RTC_DRV_X1205=m CONFIG_RTC_DRV_DS1307=m CONFIG_RTC_DRV_DS1553=m CONFIG_RTC_DRV_ISL1208=m ... and the rest of the drivers as modules I have the latest kvm-16 and here's how I'm starting the guest OS. KVER="2.6.9-42.EL" INITRD_BASE="initrd" INITRD_APPEND=".img" APPEND="ro root=LABEL=/ 3 console=ttyS0" DEV=hda kvm -kernel "/boot/vmlinuz-${KVER}" \ -initrd "/boot/${INITRD_BASE}-${KVER}${INITRD_APPEND}" \ -append "${APPEND}" \ -nographic -m 256 \ -net nic,vlan0 \ -net tap,vlan=0,ifname=tap1,script=no \ /dev/hda Anymore information can be easily provided. Thanks, - David Brown