From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Sun, 21 Jan 2001 02:21:38 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Sun, 21 Jan 2001 02:21:28 -0500 Received: from parcelfarce.linux.theplanet.co.uk ([195.92.249.252]:23560 "EHLO www.linux.org.uk") by vger.kernel.org with ESMTP id ; Sun, 21 Jan 2001 02:21:10 -0500 From: Russell King Message-Id: <200101202315.f0KNFTV01790@flint.arm.linux.org.uk> Subject: Re: Inefficient PCI DMA usage (was: [experimental patch] UHCI updates) To: johannes@erdfelt.com (Johannes Erdfelt) Date: Sat, 20 Jan 2001 23:15:28 +0000 (GMT) Cc: manfred@colorfullife.com (Manfred Spraul), linux-kernel@vger.kernel.org In-Reply-To: <20010120130848.I9156@sventech.com> from "Johannes Erdfelt" at Jan 20, 2001 01:08:49 PM X-Location: london.england.earth.mulky-way.universe X-Mailer: ELM [version 2.5 PL3] MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Johannes Erdfelt writes: > They need to be visible via DMA. They need to be 16 byte aligned. We > also have QH's which have similar requirements, but we don't use as many > of them. Can we get away from the "16 byte aligned" and make it "n byte aligned"? I believe that slab already has support for this? _____ |_____| ------------------------------------------------- ---+---+- | | Russell King rmk@arm.linux.org.uk --- --- | | | | http://www.arm.linux.org.uk/personal/aboutme.html / / | | +-+-+ --- -+- / | THE developer of ARM Linux |+| /|\ / | | | --- | +-+-+ ------------------------------------------------- /\\\ | - 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/