Received: by 2002:a05:6a10:206:0:0:0:0 with SMTP id 6csp641658pxj; Fri, 14 May 2021 11:53:49 -0700 (PDT) X-Google-Smtp-Source: ABdhPJxquq63NB1vNdqn8Hed1GBkxDEWipgM9MmrgLWwjSWV4hM5Xp1AOj3h1FhuX+fuyz7h9kAG X-Received: by 2002:a17:907:11d1:: with SMTP id va17mr49493580ejb.485.1621018428895; Fri, 14 May 2021 11:53:48 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1621018428; cv=none; d=google.com; s=arc-20160816; b=xBtJyMsWjSbMpJiMdBDzqZD0irYq6GDPJfwaoXxKRFbuRsQKUWcIwYIg3i32UK0BVo tdmhBYNmM0YoeGjaHOQ5cFymma0hOH9CNzT4TiGqPIUeG+SdsOBDJ6X1+vuRAYmv1sup YaF8aZiTOYtRH3ba5vINOr7GclZvTpcR212Q5ns8FIUS0EUYDAs/w9oT+8f1aEU3r+fW Dnvfr7jj24xO/4Ktx23BW2jWspDHbNH1UmFnXTup7xEFo3ESnNnknOmb37VAF2GiLYRm weMSrkzvOOawqNhK8M8J92boZbSwJeh0D/Vu0ZeCVu+MPRpq5+VmUIeALa3PpVMTG0Lk 34bA== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:user-agent:in-reply-to:content-disposition :mime-version:references:message-id:subject:cc:to:from:date; bh=wLmrD4x6IUN+aoDiPycBpC8PZ5eCuzXdu65Uq8kcVAI=; b=GeFMgojbiyRTzk7UT3DRFYekDHFoHzM8xVR3VIrJtNRo1f45VGunSlUai8CmTOJdPG KK6+URfw70fV30EmDnjDNRVh/A1kZfjXSuOerD9u/gvu56JHRxN+Qz4pA4wSE8gFpA+O xnv75p0uj3Fppqs44laaNNrM9oH/fwoa6+QYsYK7MjaEWCS5ZV7rTp2fDCR1XLzhiED1 XT3+HR6uj2hzo1c5qgWqfoLmFimWQsA4+ceZqSPEKHTsDvuByOkBOO3CO5UwySk5eTH3 z0LGGok27zfcawY8dGlLuAx1PSxuEflHJ5c+/1d/UO44ZuhM8C0qupveWBMdSeevb+it sYuA== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [23.128.96.18]) by mx.google.com with ESMTP id ia28si6571126ejc.23.2021.05.14.11.53.25; Fri, 14 May 2021 11:53:48 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232537AbhENOB0 (ORCPT + 99 others); Fri, 14 May 2021 10:01:26 -0400 Received: from verein.lst.de ([213.95.11.211]:50658 "EHLO verein.lst.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232103AbhENOBY (ORCPT ); Fri, 14 May 2021 10:01:24 -0400 Received: by verein.lst.de (Postfix, from userid 2407) id 062446736F; Fri, 14 May 2021 16:00:08 +0200 (CEST) Date: Fri, 14 May 2021 16:00:07 +0200 From: Christoph Hellwig To: Logan Gunthorpe Cc: linux-kernel@vger.kernel.org, linux-nvme@lists.infradead.org, linux-block@vger.kernel.org, linux-pci@vger.kernel.org, linux-mm@kvack.org, iommu@lists.linux-foundation.org, Stephen Bates , Christoph Hellwig , Dan Williams , Jason Gunthorpe , Christian =?iso-8859-1?Q?K=F6nig?= , John Hubbard , Don Dutile , Matthew Wilcox , Daniel Vetter , Jakowski Andrzej , Minturn Dave B , Jason Ekstrand , Dave Hansen , Xiong Jianxin , Bjorn Helgaas , Ira Weiny , Robin Murphy Subject: Re: [PATCH v2 00/22] Add new DMA mapping operation for P2PDMA Message-ID: <20210514140007.GE4715@lst.de> References: <20210513223203.5542-1-logang@deltatee.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20210513223203.5542-1-logang@deltatee.com> User-Agent: Mutt/1.5.17 (2007-11-01) Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thu, May 13, 2021 at 04:31:41PM -0600, Logan Gunthorpe wrote: > 17 files changed, 570 insertions(+), 290 deletions(-) I'm a little worried about all this extra code for no new functionality at all.