From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S966203AbWKTQ5c (ORCPT ); Mon, 20 Nov 2006 11:57:32 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S966197AbWKTQ5c (ORCPT ); Mon, 20 Nov 2006 11:57:32 -0500 Received: from mx2.mail.elte.hu ([157.181.151.9]:28112 "EHLO mx2.mail.elte.hu") by vger.kernel.org with ESMTP id S966203AbWKTQ5b (ORCPT ); Mon, 20 Nov 2006 11:57:31 -0500 Date: Mon, 20 Nov 2006 17:56:21 +0100 From: Ingo Molnar To: Sergei Shtylyov Cc: Benjamin Herrenschmidt , linuxppc-dev@ozlabs.org, linux-kernel@vger.kernel.org, dwalker@mvista.com Subject: Re: [PATCH] 2.6.18-rt7: PowerPC: fix breakage in threaded fasteoi type IRQ handlers Message-ID: <20061120165621.GA1504@elte.hu> References: <200611192243.34850.sshtylyov@ru.mvista.com> <1163966437.5826.99.camel@localhost.localdomain> <20061119200650.GA22949@elte.hu> <1163967590.5826.104.camel@localhost.localdomain> <20061119202348.GA27649@elte.hu> <1163985380.5826.139.camel@localhost.localdomain> <20061120100144.GA27812@elte.hu> <4561C9EC.3020506@ru.mvista.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <4561C9EC.3020506@ru.mvista.com> User-Agent: Mutt/1.4.2.2i X-ELTE-SpamScore: -4.4 X-ELTE-SpamLevel: X-ELTE-SpamCheck: no X-ELTE-SpamVersion: ELTE 2.0 X-ELTE-SpamCheck-Details: score=-4.4 required=5.9 tests=ALL_TRUSTED,AWL,BAYES_00 autolearn=no SpamAssassin version=3.0.3 -3.3 ALL_TRUSTED Did not pass through any untrusted hosts -2.6 BAYES_00 BODY: Bayesian spam probability is 0 to 1% [score: 0.0000] 1.5 AWL AWL: From: address is in the auto white-list X-ELTE-VirusStatus: clean Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org * Sergei Shtylyov wrote: > >on PPC64, 'get the vector' initiates an ACK as well - is that done > >before handle_irq() is done? > > Exactly. How else do_IRQ() would know the vector? the reason i'm asking is that in this case masking is a bit late at this point and there's a chance for a repeat interrupt. Ingo