From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from e5.ny.us.ibm.com (e5.ny.us.ibm.com [32.97.182.145]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client CN "e5.ny.us.ibm.com", Issuer "Equifax" (verified OK)) by ozlabs.org (Postfix) with ESMTP id 38E0767DF8 for ; Sat, 11 Nov 2006 02:08:41 +1100 (EST) Received: from d01relay04.pok.ibm.com (d01relay04.pok.ibm.com [9.56.227.236]) by e5.ny.us.ibm.com (8.13.8/8.12.11) with ESMTP id kAAF8a6a024444 for ; Fri, 10 Nov 2006 10:08:39 -0500 Received: from d01av03.pok.ibm.com (d01av03.pok.ibm.com [9.56.224.217]) by d01relay04.pok.ibm.com (8.13.6/8.13.6/NCO v8.1.1) with ESMTP id kAAF8Nfg181192 for ; Fri, 10 Nov 2006 10:08:30 -0500 Received: from d01av03.pok.ibm.com (loopback [127.0.0.1]) by d01av03.pok.ibm.com (8.12.11.20060308/8.13.3) with ESMTP id kAAF8M9i025107 for ; Fri, 10 Nov 2006 10:08:23 -0500 Message-ID: <455495B7.4050701@us.ibm.com> Date: Fri, 10 Nov 2006 09:07:35 -0600 From: Brian King MIME-Version: 1.0 To: Josh Boyer Subject: Re: ipr SATA support is causing problems References: <17748.25705.543922.486456@cargo.ozlabs.ibm.com> <1163159326.19697.23.camel@crusty.rchland.ibm.com> <17748.27504.715056.565983@cargo.ozlabs.ibm.com> <1163164499.4168.3.camel@zod.rchland.ibm.com> In-Reply-To: <1163164499.4168.3.camel@zod.rchland.ibm.com> Content-Type: text/plain; charset=ISO-8859-1 Cc: akpm@osdl.org, James Bottomley , John H Rose , linuxppc-dev@ozlabs.org, torvalds@osdl.org, Paul Mackerras , Jeff Garzik List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Josh Boyer wrote: > On Fri, 2006-11-10 at 23:07 +1100, Paul Mackerras wrote: >> Josh Boyer writes: >> >>> John Rose reported this a few days ago. Brian responded with this: >>> >>> http://marc.theaimsgroup.com/?l=linux-ide&m=116169938407596&w=2 >> Didn't John say he still saw the crash with that change? > > He did on my suggestion, which technically wasn't correct. I haven't > seen anything from him after Brian replied with a real patch. > > I know I helped debug a crash that looked very much like that on a P5 > box with a 2.6.19-rcX kernel and Brian's patch fixed it. Paul, The backtrace you posted is identical to the problem fixed by the patch that Josh pointed you to. The patch has been submitted to Jeff. I asked Jeff two days ago if this could be pulled in for 2.6.19. I verified the bug and the fix on my machine. As far as I know, John still has not tried the actual patch pointed to above. Just to clarify, without this patch, any monolithic kernel will not work on pseries, but modular kernels will still work. If someone can reproduce any problem with the libata patch above applied, please let me know. Brian -- Brian King eServer Storage I/O IBM Linux Technology Center