Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S935881AbcJXRry (ORCPT ); Mon, 24 Oct 2016 13:47:54 -0400 Received: from shards.monkeyblade.net ([184.105.139.130]:37956 "EHLO shards.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751783AbcJXRrx (ORCPT ); Mon, 24 Oct 2016 13:47:53 -0400 Date: Mon, 24 Oct 2016 13:47:50 -0400 (EDT) Message-Id: <20161024.134750.374485400910042905.davem@davemloft.net> To: tushar.n.dave@oracle.com Cc: chris.hyser@oracle.com, sowmini.varadhan@oracle.com, vgupta@synopsys.com, robin.murphy@arm.com, jroedel@suse.de, egtvedt@samfundet.no, krzk@kernel.org, rkuo@codeaurora.org, sparclinux@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH 3/6] sparc64: Initialize iommu_map_table and iommu_pool From: David Miller In-Reply-To: <1476123127-24314-4-git-send-email-tushar.n.dave@oracle.com> References: <1476123127-24314-1-git-send-email-tushar.n.dave@oracle.com> <1476123127-24314-4-git-send-email-tushar.n.dave@oracle.com> X-Mailer: Mew version 6.7 on Emacs 24.5 / Mule 6.0 (HANACHIRUSATO) Mime-Version: 1.0 Content-Type: Text/Plain; charset=us-ascii Content-Transfer-Encoding: 7bit X-Greylist: Sender succeeded SMTP AUTH, not delayed by milter-greylist-4.5.12 (shards.monkeyblade.net [149.20.54.216]); Mon, 24 Oct 2016 10:47:52 -0700 (PDT) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 678 Lines: 18 From: Tushar Dave Date: Mon, 10 Oct 2016 11:12:04 -0700 > Like legacy IOMMU, use common iommu_map_table and iommu_pool for ATU. > This change initializes iommu_map_table and iommu_pool for ATU. > > Signed-off-by: Tushar Dave > Reviewed-by: chris hyser > Reviewed-by: Sowmini Varadhan I suspect you are adding a bisection problem here. It looks to me like patch #2 starts setting up to use the ATU but these changes in #3 and later are necessary for it to even work properly. You can't leave the tree in an intermediate non-working state between changes like that.