Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Wed, 18 Jul 2001 13:46:32 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Wed, 18 Jul 2001 13:46:22 -0400 Received: from web14405.mail.yahoo.com ([216.136.174.62]:10258 "HELO web14405.mail.yahoo.com") by vger.kernel.org with SMTP id ; Wed, 18 Jul 2001 13:46:08 -0400 Message-ID: <20010718174612.48434.qmail@web14405.mail.yahoo.com> Date: Wed, 18 Jul 2001 10:46:12 -0700 (PDT) From: Rajeev Bector Subject: vmalloc and kiobuf questions ? To: linux-kernel@vger.kernel.org MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org MM Gurus, In trying to understand how to map driver memory into user space memory, I have the following questions: 1) Is there a limit to how much memory I can allocate using vmalloc() ? (This is regular RAM) 2) I want to map the vmalloc'ed memory to user space via mmap(). I've read that remap_page_range() will not do it and I have to do it using nopage handlers ? Is that true ? Is there a simple answer to why is that the case ? 3) I've also read the kiobufs will simplify all this. Is there a documentation on kiobufs - what they can and cannot do ? Are kiobufs part of the standard kernel now ? Thanks in advance for your answers ! Rajeev __________________________________________________ Do You Yahoo!? Get personalized email addresses from Yahoo! Mail http://personal.mail.yahoo.com/ - 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/