From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from [212.18.232.186] (helo=caramon.arm.linux.org.uk) by smtp.mailbox.net.uk with esmtp (Exim 3.22 #2) id 15aDro-0003j4-00 for linux-mm@kvack.org; Fri, 24 Aug 2001 11:07:08 +0100 Received: from flint.arm.linux.org.uk (IDENT:mail@flint.arm.linux.org.uk [192.168.0.4]) by caramon.arm.linux.org.uk (8.11.2/8.11.2) with ESMTP id f7OA76212800 for ; Fri, 24 Aug 2001 11:07:07 +0100 Received: from rmk by flint.arm.linux.org.uk with local (Exim 3.16 #1) id 15aDrm-0008Lh-00 for linux-mm@kvack.org; Fri, 24 Aug 2001 11:07:06 +0100 Date: Fri, 24 Aug 2001 11:07:06 +0100 From: Russell King Subject: Patch for review Message-ID: <20010824110706.B31722@flint.arm.linux.org.uk> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Sender: owner-linux-mm@kvack.org Return-Path: To: linux-mm@kvack.org List-ID: Hi, Could someone please review the patch at: http://www.arm.linux.org.uk/developer/patches/?action=viewpatch&id=613/1 and indicate whether it is acceptable to you folks? The problem is that on some Intel StrongARM-based machines, the address line A20 must never be set when performing DMA accesses, otherwise the SDRAM gets corrupted. Therefore, we must only provide a 1MB DMA region. As Nico Pitre says there, Linux currently expects all memory zones to be larger than 2MB. Thanks. -- Russell King (rmk@arm.linux.org.uk) The developer of ARM Linux http://www.arm.linux.org.uk/personal/aboutme.html -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/