From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from gate.crashing.org (gate.crashing.org [63.228.1.57]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client did not present a certificate) by ozlabs.org (Postfix) with ESMTPS id EE7991007D1 for ; Wed, 15 Feb 2012 11:02:14 +1100 (EST) Message-ID: <1329264105.3772.12.camel@pasglop> Subject: Re: [PATCH v3] powerpc: Rework lazy-interrupt handling From: Benjamin Herrenschmidt To: linuxppc-dev Date: Wed, 15 Feb 2012 11:01:45 +1100 In-Reply-To: <1329201969.3772.7.camel@pasglop> References: <1329201969.3772.7.camel@pasglop> Content-Type: text/plain; charset="UTF-8" Mime-Version: 1.0 Cc: Scott Wood , Stuart Yoder , Anton Blanchard , Laurentiu Tudor , Paul Mackerras List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , On Tue, 2012-02-14 at 17:46 +1100, Benjamin Herrenschmidt wrote: > The current implementation of lazy interrupts handling has some > issues that this tries to address. > > Except on iSeries, we don't do the various workarounds we need to > do on re-enable when returning from an interrupt, which can do an > implicit re-enable, and thus we may still lose or get delayed > decrementer or doorbell interrupts. .../... So we were still losing doorbells on BookE due to a st00pid thinko on my part :-) New patch following, hopefully that one's good ! Cheers, Ben.