From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from e23smtp05.au.ibm.com ([202.81.31.147]:53999 "EHLO e23smtp05.au.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752156AbbBQW1T (ORCPT ); Tue, 17 Feb 2015 17:27:19 -0500 Received: from /spool/local by e23smtp05.au.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Wed, 18 Feb 2015 08:27:17 +1000 Received: from d23relay07.au.ibm.com (d23relay07.au.ibm.com [9.190.26.37]) by d23dlp01.au.ibm.com (Postfix) with ESMTP id 18B212CE8040 for ; Wed, 18 Feb 2015 09:27:14 +1100 (EST) Received: from d23av01.au.ibm.com (d23av01.au.ibm.com [9.190.234.96]) by d23relay07.au.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id t1HMR56K14811296 for ; Wed, 18 Feb 2015 09:27:14 +1100 Received: from d23av01.au.ibm.com (localhost [127.0.0.1]) by d23av01.au.ibm.com (8.14.4/8.14.4/NCO v10.0 AVout) with ESMTP id t1HMQe2s020066 for ; Wed, 18 Feb 2015 09:26:40 +1100 Date: Wed, 18 Feb 2015 09:26:15 +1100 From: Gavin Shan To: Stewart Smith Cc: Gavin Shan , linuxppc-dev@ozlabs.org, bhelgaas@google.com, linux-pci@vger.kernel.org Subject: Re: [PATCH RESEND v2 0/7] powerpc/powernv: Unified PCI slot reset and hotplug Message-ID: <20150217222615.GA6454@shangw> Reply-To: Gavin Shan References: <1424157203-691-1-git-send-email-gwshan@linux.vnet.ibm.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii In-Reply-To: Sender: linux-pci-owner@vger.kernel.org List-ID: On Wed, Feb 18, 2015 at 08:44:19AM +1100, Stewart Smith wrote: >Gavin Shan writes: > >> The patchset was built based on patchset "powerpc/powernv: Simplify EEH >> implementation", which can be found from: >> >> https://patchwork.ozlabs.org/patch/439956/ >> >> The patchset corresponds to skiboot changes, which manages PCI slots >> in a unified way: OPAL APIs used to do slot reset, power management, >> presence status retrival. The patchset shouldn't be merged before >> the OPAL firmware counterpart is merged: >> >> https://patchwork.ozlabs.org/patch/440463/ > >But this patchset will work with old OPAL, right? We're not breaking >compatibility with newer kernels (with this patchset) and older >firmware? Yes. With old OPAL, the reset stuff in Linux works as before and we shouldn't see hotpluggable slots from /sys/bus/pci/slots. The compatibility issue was pointed by Ben. It's something fixed by this revision (v2). Thanks, Gavin