From mboxrd@z Thu Jan 1 00:00:00 1970 Date: Fri, 18 May 2001 18:44:59 +0200 From: Christoph Hellwig Subject: Re: Running out of vmalloc space Message-ID: <20010518184459.A14299@caldera.de> References: <3B04069C.49787EC2@fc.hp.com> <20010517183931.V2617@redhat.com> <3B045546.312BA42E@fc.hp.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <3B045546.312BA42E@fc.hp.com>; from dp@fc.hp.com on Thu, May 17, 2001 at 04:48:38PM -0600 Sender: owner-linux-mm@kvack.org Return-Path: To: David Pinedo Cc: linux-mm@kvack.org List-ID: On Thu, May 17, 2001 at 04:48:38PM -0600, David Pinedo wrote: > Unfortunately, yes. It has to be in the kernel's virtual address space, > because the kernel graphics driver initiates DMAs to and from the > graphics board, which can only be done from the kernel using locked down > physical memory. Take a look at drivers/char/raw.c on how to lock down userpages. Christoph -- Of course it doesn't work. We've performed a software upgrade. -- 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.eu.org/Linux-MM/