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 Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by smtp.lore.kernel.org (Postfix) with ESMTP id 3B68DC433EF for ; Thu, 27 Jan 2022 22:33:03 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 97FF56B0071; Thu, 27 Jan 2022 17:33:02 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id 92F136B0072; Thu, 27 Jan 2022 17:33:02 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 7F69E6B0073; Thu, 27 Jan 2022 17:33:02 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0079.hostedemail.com [216.40.44.79]) by kanga.kvack.org (Postfix) with ESMTP id 6CE346B0071 for ; Thu, 27 Jan 2022 17:33:02 -0500 (EST) Received: from smtpin09.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay01.hostedemail.com (Postfix) with ESMTP id 262C5181F6CA5 for ; Thu, 27 Jan 2022 22:33:02 +0000 (UTC) X-FDA: 79077518604.09.37A1253 Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by imf11.hostedemail.com (Postfix) with ESMTP id A6E7E40033 for ; Thu, 27 Jan 2022 22:33:01 +0000 (UTC) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id B34F961B04; Thu, 27 Jan 2022 22:33:00 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 9F867C340E4; Thu, 27 Jan 2022 22:32:59 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linux-foundation.org; s=korg; t=1643322780; bh=KyW09W85IPjR9zNAkKrCh5PNjr0Umrx44954UKFP4jQ=; h=Date:From:To:Cc:Subject:In-Reply-To:References:From; b=fP5wmZtdgiZu/FrP7PhOokkdSv2iz/JRlELCy8KE3PxjZuPikwpGG5u5M86BQ8QMB YREDewXYuQr0LO2GLNCUrm5xL3I2VEh6uMOCa4PMzmbgQscCQY6FGwQC1Pb/zu6qoU n+kfJ6iphf95sdN39zm7Uy1KfETp70xNuWJ1zn54= Date: Thu, 27 Jan 2022 14:32:58 -0800 From: Andrew Morton To: Alex Sierra Cc: , , , , , , , , , , , Subject: Re: [PATCH v4 00/10] Add MEMORY_DEVICE_COHERENT for coherent device memory mapping Message-Id: <20220127143258.8da663659948ad1e6f0c0ea8@linux-foundation.org> In-Reply-To: <20220127030949.19396-1-alex.sierra@amd.com> References: <20220127030949.19396-1-alex.sierra@amd.com> X-Mailer: Sylpheed 3.5.1 (GTK+ 2.24.31; x86_64-pc-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Authentication-Results: imf11.hostedemail.com; dkim=pass header.d=linux-foundation.org header.s=korg header.b=fP5wmZtd; spf=pass (imf11.hostedemail.com: domain of akpm@linux-foundation.org designates 139.178.84.217 as permitted sender) smtp.mailfrom=akpm@linux-foundation.org; dmarc=none X-Rspam-User: nil X-Rspamd-Queue-Id: A6E7E40033 X-Stat-Signature: imgx7s18n66t37cmpf7o9fkapftwbtiy X-Rspamd-Server: rspam12 X-HE-Tag: 1643322781-747436 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On Wed, 26 Jan 2022 21:09:39 -0600 Alex Sierra wrote: > This patch series introduces MEMORY_DEVICE_COHERENT, a type of memory > owned by a device that can be mapped into CPU page tables like > MEMORY_DEVICE_GENERIC and can also be migrated like > MEMORY_DEVICE_PRIVATE. Some more reviewer input appears to be desirable here. I was going to tentatively add it to -mm and -next, but problems. 5.17-rc1's mm/migrate.c:migrate_vma_check_page() is rather different from the tree you patched. Please redo, refresh and resend?