Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Mon, 5 Feb 2001 14:05:58 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Mon, 5 Feb 2001 14:05:48 -0500 Received: from router-100M.swansea.linux.org.uk ([194.168.151.17]:7430 "EHLO the-village.bc.nu") by vger.kernel.org with ESMTP id ; Mon, 5 Feb 2001 14:05:38 -0500 Subject: Re: [Kiobuf-io-devel] RFC: Kernel mechanism: Compound event wait /notify + callback chains To: sct@redhat.com (Stephen C. Tweedie) Date: Mon, 5 Feb 2001 19:04:44 +0000 (GMT) Cc: alan@lxorguk.ukuu.org.uk (Alan Cox), sct@redhat.com (Stephen C. Tweedie), manfred@colorfullife.com (Manfred Spraul), torvalds@transmeta.com (Linus Torvalds), hch@caldera.de (Christoph Hellwig), lord@sgi.com (Steve Lord), linux-kernel@vger.kernel.org, kiobuf-io-devel@lists.sourceforge.net In-Reply-To: <20010205184911.A2116@redhat.com> from "Stephen C. Tweedie" at Feb 05, 2001 06:49:11 PM X-Mailer: ELM [version 2.5 PL1] MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Message-Id: From: Alan Cox Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org > Kiobufs have never, ever required the IO to be aligned on any > particular boundary. They simply make the assumption that the > underlying buffered object can be described in terms of pages with > some arbitrary (non-aligned) start/offset. Every video framebuffer start/length per page ? > I've ever seen satisfies that, so you can easily map an arbitrary > contiguous region of the framebuffer with a kiobuf already. Video is non contiguous ranges. In fact if you are blitting to a card with tiled memory it gets very interesting in its video lists - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org Please read the FAQ at http://www.tux.org/lkml/