From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <SRS0=c0gK=S7=vger.kernel.org=linux-kernel-owner@kernel.org>
X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on
	aws-us-west-2-korg-lkml-1.web.codeaurora.org
X-Spam-Level: 
X-Spam-Status: No, score=-2.5 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS,
	MAILING_LIST_MULTI,SPF_PASS,USER_AGENT_MUTT autolearn=ham autolearn_force=no
	version=3.4.0
Received: from mail.kernel.org (mail.kernel.org [198.145.29.99])
	by smtp.lore.kernel.org (Postfix) with ESMTP id 153CDC43219
	for <linux-kernel@archiver.kernel.org>; Mon, 29 Apr 2019 11:49:37 +0000 (UTC)
Received: from vger.kernel.org (vger.kernel.org [209.132.180.67])
	by mail.kernel.org (Postfix) with ESMTP id E0BF020673
	for <linux-kernel@archiver.kernel.org>; Mon, 29 Apr 2019 11:49:36 +0000 (UTC)
Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand
        id S1728044AbfD2Ltg (ORCPT
        <rfc822;linux-kernel@archiver.kernel.org>);
        Mon, 29 Apr 2019 07:49:36 -0400
Received: from verein.lst.de ([213.95.11.211]:38021 "EHLO newverein.lst.de"
        rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP
        id S1727857AbfD2Ltf (ORCPT <rfc822;linux-kernel@vger.kernel.org>);
        Mon, 29 Apr 2019 07:49:35 -0400
Received: by newverein.lst.de (Postfix, from userid 2407)
        id D4EC168AFE; Mon, 29 Apr 2019 13:49:18 +0200 (CEST)
Date:   Mon, 29 Apr 2019 13:49:18 +0200
From:   Christoph Hellwig <hch@lst.de>
To:     Robin Murphy <robin.murphy@arm.com>
Cc:     Christoph Hellwig <hch@lst.de>, Joerg Roedel <joro@8bytes.org>,
        Catalin Marinas <catalin.marinas@arm.com>,
        Will Deacon <will.deacon@arm.com>,
        Tom Lendacky <thomas.lendacky@amd.com>,
        iommu@lists.linux-foundation.org,
        linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH 12/21] dma-iommu: factor atomic pool allocations into
 helpers
Message-ID: <20190429114918.GB30460@lst.de>
References: <20190327080448.5500-1-hch@lst.de> <20190327080448.5500-13-hch@lst.de> <b3f80a11-1504-e8f9-4438-92bcd5f3df7f@arm.com> <20190410061157.GA5278@lst.de> <20190417063358.GA24139@lst.de> <83615173-a8b4-e0eb-bac3-1a58d61ea4ef@arm.com> <20190418163512.GA25347@lst.de> <228ee57a-d7b2-48e0-a34e-81d5fba0a090@arm.com> <20190419082348.GA22299@lst.de> <0a6b3f53-79e5-af83-be39-f04c9acd8384@arm.com>
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <0a6b3f53-79e5-af83-be39-f04c9acd8384@arm.com>
User-Agent: Mutt/1.5.17 (2007-11-01)
Sender: linux-kernel-owner@vger.kernel.org
Precedence: bulk
List-ID: <linux-kernel.vger.kernel.org>
X-Mailing-List: linux-kernel@vger.kernel.org

On Tue, Apr 23, 2019 at 11:01:44AM +0100, Robin Murphy wrote:
> Wouldn't this suffice? Since we also use alloc_pages() in the coherent 
> atomic case, the free path should already be able to deal with it.
>
> Let me take a proper look at v3 and see how it all looks in context.

Any comments on v3?  I've been deferring lots of other DMA work to
not create conflicts, so I'd hate to miss this merge window.