From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754529Ab3A2BPN (ORCPT ); Mon, 28 Jan 2013 20:15:13 -0500 Received: from cantor2.suse.de ([195.135.220.15]:60254 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751695Ab3A2BPL (ORCPT ); Mon, 28 Jan 2013 20:15:11 -0500 From: Thomas Renninger To: Takao Indoh Cc: yinghai@kernel.org, muneda.takahiro@jp.fujitsu.com, linux-pci@vger.kernel.org, x86@kernel.org, linux-kernel@vger.kernel.org, andi@firstfloor.org, tokunaga.keiich@jp.fujitsu.com, kexec@lists.infradead.org, hbabu@us.ibm.com, mingo@redhat.com, ddutile@redhat.com, vgoyal@redhat.com, ishii.hironobu@jp.fujitsu.com, hpa@zytor.com, bhelgaas@google.com, tglx@linutronix.de, khalid@gonehiking.org Subject: Re: [PATCH v7 0/5] Reset PCIe devices to address DMA problem on kdump with iommu Date: Tue, 29 Jan 2013 02:14:54 +0100 Message-ID: <3404772.bJenOLl2bH@hammer82.arch.suse.de> User-Agent: KMail/4.8.5 (Linux/3.4.11-2.16-desktop; KDE/4.8.5; x86_64; ; ) In-Reply-To: <51007EF2.3090208@jp.fujitsu.com> References: <20121127004144.3604.61708.sendpatchset@tindoh.g01.fujitsu.local> <1508535.gXZDAVy6sT@hammer82.arch.suse.de> <51007EF2.3090208@jp.fujitsu.com> MIME-Version: 1.0 Content-Transfer-Encoding: 7Bit Content-Type: text/plain; charset="us-ascii" Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thursday, January 24, 2013 09:23:14 AM Takao Indoh wrote: > (2013/01/23 9:47), Thomas Renninger wrote: > > On Monday, January 21, 2013 10:11:04 AM Takao Indoh wrote: > >> (2013/01/08 4:09), Thomas Renninger wrote: > > ... > > > >>> I tried the provided patches first on 2.6.32, then I verfied with > >>> 3.8-rc2 > >>> and in both cases the disk is not detected anymore in > >>> reset_devices (kexec'ed/kdump) case (but things work fine without these > >>> patches). > >> > >> So the problem that the disk is not detected was caused by exactmap > >> problem you guys are discussing? Or still not detected even if exactmap > >> problem is fixed? > > > > This problem is related to the 5 PCI resetting patches. > > Dumping worked with a 2.6.32 and a 3.8-rc2 kernel, adding the PCI > > resetting > > patches broke both. I first tried 2.6.32 and verified with 3.8-rc2 to make > > sure I didn't mess up the backport adjustings of the patches to 2.6.32. > If you have a chance please try again the patches with the latest > firmware. Not sure I can update the firmware as this is a reference platform used exactly like this in production. I also cannot see how this could help. Thomas