From mboxrd@z Thu Jan 1 00:00:00 1970 From: Avi Kivity Subject: Re: [PATCH] KVM: fix PIC interrupt delivery on different APIC conditions Date: Mon, 17 Sep 2007 09:22:21 +0200 Message-ID: <46EE2B2D.7000308@qumranet.com> References: <37E52D09333DE2469A03574C88DBF40FA9C236@pdsmsx414.ccr.corp.intel.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Cc: kvm-devel-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org To: "He, Qing" Return-path: In-Reply-To: <37E52D09333DE2469A03574C88DBF40FA9C236-wq7ZOvIWXbM/UvCtAeCM4rfspsVTdybXVpNB7YpNyf8@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 He, Qing wrote: > This patch changes the PIC interrupts delivery. Now it is only deliverd > to vcpu0 when either condition is met (on vcpu0): > 1. local APIC is hardware disabled > 2. LVT0 is unmasked and configured to delivery mode ExtInt > > It fixes the 2x faster wall clock on x86_64 and SMP i386 Linux guests > > Applied, thanks. -- Do not meddle in the internals of kernels, for they are subtle and quick to panic. ------------------------------------------------------------------------- This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2005. http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/