Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S262323AbVCIXOD (ORCPT ); Wed, 9 Mar 2005 18:14:03 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S262204AbVCIXNJ (ORCPT ); Wed, 9 Mar 2005 18:13:09 -0500 Received: from mail0.lsil.com ([147.145.40.20]:6602 "EHLO mail0.lsil.com") by vger.kernel.org with ESMTP id S262410AbVCIWsC (ORCPT ); Wed, 9 Mar 2005 17:48:02 -0500 Message-ID: <0E3FA95632D6D047BA649F95DAB60E570230CC22@exa-atlanta> From: "Bagalkote, Sreenivas" To: "'Christoph Hellwig'" Cc: "'Arjan van de Ven'" , "'linux-kernel@vger.kernel.org'" , "'linux-scsi@vger.kernel.org'" , "'James Bottomley'" , "'Matt_Domsch@Dell.com'" , Andrew Morton Subject: RE: [ANNOUNCE][PATCH 2.6.11 2/3] megaraid_sas: Announcing new mod ule for LSI Logic's SAS based MegaRAID controllers Date: Wed, 9 Mar 2005 17:47:27 -0500 MIME-Version: 1.0 X-Mailer: Internet Mail Service (5.5.2657.72) Content-Type: text/plain Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 738 Lines: 19 > >Even for kernels with a 64bit dma_addr_t you can get 32bit dma >addresses >only. As a start check whether the pci_set_dma_mask for the 64bit mask >failed - in that case you can always use 32bit SGLs. > Please help me understand: If dma_addr_t is 64 bit, I will get 64bit addresses in scatterlist regardless the outcome of pci_set_dma_mask, won't I? These addresses may have valid or null high addresses. My idea was to have 32(64) bit SGLs for 32(64) bit dma_addr_t. Thanks, Sreenivas - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/