From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: 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=-7.5 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING,SPF_HELO_NONE,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 59D85C282DD for ; Thu, 23 May 2019 15:04:44 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 38CF72184E for ; Thu, 23 May 2019 15:04:44 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731084AbfEWPEn (ORCPT ); Thu, 23 May 2019 11:04:43 -0400 Received: from mx1.redhat.com ([209.132.183.28]:61108 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730783AbfEWPEm (ORCPT ); Thu, 23 May 2019 11:04:42 -0400 Received: from smtp.corp.redhat.com (int-mx07.intmail.prod.int.phx2.redhat.com [10.5.11.22]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 1F9233082E24; Thu, 23 May 2019 15:04:37 +0000 (UTC) Received: from redhat.com (unknown [10.20.6.178]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 0EB501001E81; Thu, 23 May 2019 15:04:33 +0000 (UTC) Date: Thu, 23 May 2019 11:04:32 -0400 From: Jerome Glisse To: Jason Gunthorpe Cc: linux-kernel@vger.kernel.org, linux-rdma@vger.kernel.org, Leon Romanovsky , Doug Ledford , Artemy Kovalyov , Moni Shoua , Mike Marciniszyn , Kaike Wan , Dennis Dalessandro Subject: Re: [PATCH v4 0/1] Use HMM for ODP v4 Message-ID: <20190523150432.GA5104@redhat.com> References: <20190411181314.19465-1-jglisse@redhat.com> <20190506195657.GA30261@ziepe.ca> <20190521205321.GC3331@redhat.com> <20190522005225.GA30819@ziepe.ca> <20190522174852.GA23038@redhat.com> <20190522235737.GD15389@ziepe.ca> MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <20190522235737.GD15389@ziepe.ca> User-Agent: Mutt/1.11.3 (2019-02-01) X-Scanned-By: MIMEDefang 2.84 on 10.5.11.22 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.46]); Thu, 23 May 2019 15:04:42 +0000 (UTC) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, May 22, 2019 at 08:57:37PM -0300, Jason Gunthorpe wrote: > On Wed, May 22, 2019 at 01:48:52PM -0400, Jerome Glisse wrote: > > > > > So attached is a rebase on top of 5.2-rc1, i have tested with pingpong > > > > (prefetch and not and different sizes). Seems to work ok. > > > > > > Urk, it already doesn't apply to the rdma tree :( > > > > > > The conflicts are a little more extensive than I'd prefer to handle.. > > > Can I ask you to rebase it on top of this branch please: > > > > > > https://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma.git/log/?h=wip/jgg-for-next > > > > > > Specifically it conflicts with this patch: > > > > > > https://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma.git/commit/?h=wip/jgg-for-next&id=d2183c6f1958e6b6dfdde279f4cee04280710e34 > > There is at least one more serious blocker here: > > config ARCH_HAS_HMM_MIRROR > bool > default y > depends on (X86_64 || PPC64) > depends on MMU && 64BIT > > I can't loose ARM64 support for ODP by merging this, that is too > serious of a regression. > > Can you fix it? 5.2 already has patch to fix the Kconfig (ARCH_HAS_HMM_MIRROR and ARCH_HAS_HMM_DEVICE replacing ARCH_HAS_HMM) I need to update nouveau in 5.3 so that i can drop the old ARCH_HAS_HMM and then convert core mm in 5.4 to use ARCH_HAS_HMM_MIRROR and ARCH_HAS_HMM_DEVICE instead of ARCH_HAS_HMM Adding ARM64 to ARCH_HAS_HMM_MIRROR should not be an issue i would need access to an ARM64 to test as i did not wanted to enable it without testing. So it seems it will have to wait 5.4 for ODP. I will re-spin the patch for ODP once i am done reviewing Ralph changes and yours for 5.3. Cheers, Jérôme