Path: csiph.com!news.redatomik.org!aioe.org!news.servidellagleba.it!bofh.it!news.nic.it!robomod From: "Martin K. Petersen" Newsgroups: linux.kernel Subject: Re: [RESEND][PATCH 07/10][SCSI]mpt2sas: Added Reply Descriptor Post Queue (RDPQ) Array support Date: Thu, 27 Apr 2017 00:30:01 +0200 Message-ID: References: Organization: Oracle Corporation User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/25.2 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain X-Source-IP: userv0021.oracle.com [156.151.31.71] Sender: robomod@news.nic.it List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Approved: robomod@news.nic.it Lines: 14 X-Original-Cc: "Martin K. Petersen" , "jejb\@kernel.org" , "linux-scsi\@vger.kernel.org" , "linux-kernel\@vger.kernel.org" , Christoph Hellwig X-Original-Date: Wed, 26 Apr 2017 18:25:23 -0400 X-Original-Message-ID: X-Original-References: <20140625103445.GA12943@avagotech.com> X-Original-Sender: linux-kernel-owner@vger.kernel.org Xref: csiph.com linux.kernel:1631768 Sreekanth, > We need to satisfy this condition on those system where 32 bit dma > consistent mask is not supported and it only supports 64 bit dma > consistent mask. So on these system we can't set > pci_set_consistent_dma_mask() to DMA_BIT_MASK(32). Which systems are you talking about? It seems a bit unrealistic to require all devices to support 64-bit DMA. -- Martin K. Petersen Oracle Linux Engineering