From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from e2.ny.us.ibm.com (e2.ny.us.ibm.com [32.97.182.142]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client CN "e2.ny.us.ibm.com", Issuer "Equifax" (verified OK)) by ozlabs.org (Postfix) with ESMTPS id 6921ADDE25 for ; Wed, 11 Jun 2008 01:01:53 +1000 (EST) Received: from d01relay04.pok.ibm.com (d01relay04.pok.ibm.com [9.56.227.236]) by e2.ny.us.ibm.com (8.13.8/8.13.8) with ESMTP id m5AF1nIr011744 for ; Tue, 10 Jun 2008 11:01:49 -0400 Received: from d01av01.pok.ibm.com (d01av01.pok.ibm.com [9.56.224.215]) by d01relay04.pok.ibm.com (8.13.8/8.13.8/NCO v9.0) with ESMTP id m5AF1nX9156924 for ; Tue, 10 Jun 2008 11:01:49 -0400 Received: from d01av01.pok.ibm.com (loopback [127.0.0.1]) by d01av01.pok.ibm.com (8.12.11.20060308/8.13.3) with ESMTP id m5AF1mOF001304 for ; Tue, 10 Jun 2008 11:01:49 -0400 From: Stefan Roscher To: Roland Dreier Subject: Re: [PATCH REPOST] IB/ehca: In case of lost interrupts, trigger EOI to reenable interrupts Date: Tue, 10 Jun 2008 17:01:45 +0200 References: <200806101644.34693.ossrosch@linux.vnet.ibm.com> In-Reply-To: MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Message-Id: <200806101701.47090.ossrosch@linux.vnet.ibm.com> Cc: TKLEIN@de.ibm.com, THEMANN@de.ibm.com, fenkes@de.ibm.com, LKML , OF-EWG , LinuxPPC-Dev , raisch@de.ibm.com, Paul Mackerras , general@lists.openfabrics.org List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , On Tuesday 10 June 2008 16:52:57 Roland Dreier wrote: > > During corner case testing, we noticed that some versions of ehca > > do not properly transition to interrupt done in special load situations. > > This can be resolved by periodically triggering EOI through H_EOI, > > if eqes are pending. > > So just to be clear: this is a workaround for a hardware/firmware bug? > > - R. > Yes it is. regards Stefan