From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-pg0-f70.google.com (mail-pg0-f70.google.com [74.125.83.70]) by kanga.kvack.org (Postfix) with ESMTP id E3B446B0387 for ; Wed, 22 Feb 2017 03:16:05 -0500 (EST) Received: by mail-pg0-f70.google.com with SMTP id v63so12226471pgv.0 for ; Wed, 22 Feb 2017 00:16:05 -0800 (PST) Received: from mail.linuxfoundation.org (mail.linuxfoundation.org. [140.211.169.12]) by mx.google.com with ESMTPS id j196si600766pgc.23.2017.02.22.00.16.04 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Wed, 22 Feb 2017 00:16:05 -0800 (PST) Date: Wed, 22 Feb 2017 00:16:03 -0800 From: Andrew Morton Subject: Re: [HMM v17 00/14] HMM (Heterogeneous Memory Management) v17 Message-Id: <20170222001603.162a1209efc06b6c46556383@linux-foundation.org> In-Reply-To: <20170222071915.GE9967@balbir.ozlabs.ibm.com> References: <1485557541-7806-1-git-send-email-jglisse@redhat.com> <20170222071915.GE9967@balbir.ozlabs.ibm.com> Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org List-ID: To: Balbir Singh Cc: =?ISO-8859-1?Q?J=E9r=F4me?= Glisse , linux-kernel@vger.kernel.org, linux-mm@kvack.org, John Hubbard , Naoya Horiguchi , David Nellans On Wed, 22 Feb 2017 18:19:15 +1100 Balbir Singh wrote: > On Fri, Jan 27, 2017 at 05:52:07PM -0500, J__r__me Glisse wrote: > > Cliff note: HMM offers 2 things (each standing on its own). First > > it allows to use device memory transparently inside any process > > without any modifications to process program code. Second it allows > > to mirror process address space on a device. > > > > Change since v16: > > - move HMM unaddressable device memory to its own radix tree and > > thus find_dev_pagemap() will no longer return HMM dev_pagemap > > - rename HMM migration helper (drop the prefix) and make them > > completely independent of HMM > > > > Migration can now be use to implement thing like multi-threaded > > copy or make use of specific memory allocator for destination > > memory. > > > > Work is under way to use this feature inside nouveau (the upstream > > open source driver for NVidia GPU) either 411 or 4.12 timeframe. > > But this patchset have been otherwise tested with the close source > > driver for NVidia GPU and thus we are confident it works and allow > > to use the hardware for seamless interaction between CPU and GPU > > in common address space of a process. > > > > I also discussed the features with other company and i am confident > > it can be use on other, yet, unrelease hardware. > > > > Please condiser applying for 4.11 > > > > Andrew, do we expect to get this in 4.11/4.12? Just curious. > I'll be taking a serious look after -rc1. The lack of reviewed-by, acked-by and tested-by is a concern. It's rather odd for a patchset in the 17th revision! What's up with that? Have you reviewed or tested the patches? -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org