From mboxrd@z Thu Jan 1 00:00:00 1970 From: Avi Kivity Subject: Re: High vm-exit latencies during kvm boot-up/shutdown Date: Tue, 23 Oct 2007 11:46:57 +0200 Message-ID: <471DC311.2050003@qumranet.com> References: <471D2D8C.1080202@web.de> <10EA09EFD8728347A513008B6B0DA77A02441127@pdsmsx411.ccr.corp.intel.com> <471D96DC.7070809@web.de> <10EA09EFD8728347A513008B6B0DA77A024414D9@pdsmsx411.ccr.corp.intel.com> <471DBA1A.2080108@web.de> Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="===============0508704685==" Cc: kvm-devel-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org To: Jan Kiszka Return-path: In-Reply-To: <471DBA1A.2080108-S0/GAf8tV78@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 --===============0508704685== Content-Type: text/plain; charset=GB2312 Content-Transfer-Encoding: 7bit Jan Kiszka wrote: > Clarification: I can't precisely tell what code is executed in VM mode, > as I don't have qemu or that guest instrumented. I just see the kernel > entering VM mode and leaving it again more than 300 us later. So I > wonder why this is allowed while some external IRQ is pending. > > How do you know an external interrupt is pending? kvm programs the hardware to exit when an external interrupt arrives. -- Do not meddle in the internals of kernels, for they are subtle and quick to panic. --===============0508704685== Content-Type: text/plain; charset="us-ascii" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Content-Disposition: inline ------------------------------------------------------------------------- This SF.net email is sponsored by: Splunk Inc. Still grepping through log files to find problems? Stop. Now Search log events and configuration files using AJAX and a browser. Download your FREE copy of Splunk now >> http://get.splunk.com/ --===============0508704685== Content-Type: text/plain; charset="us-ascii" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Content-Disposition: inline _______________________________________________ kvm-devel mailing list kvm-devel-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org https://lists.sourceforge.net/lists/listinfo/kvm-devel --===============0508704685==--