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 8426BC27C65 for ; Tue, 11 Jun 2024 19:36:16 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 1CA596B00B8; Tue, 11 Jun 2024 15:36:16 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 17A356B00BD; Tue, 11 Jun 2024 15:36:16 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 026006B00B8; Tue, 11 Jun 2024 15:36:15 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0012.hostedemail.com [216.40.44.12]) by kanga.kvack.org (Postfix) with ESMTP id D6D846B00B8 for ; Tue, 11 Jun 2024 15:36:15 -0400 (EDT) Received: from smtpin06.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay10.hostedemail.com (Postfix) with ESMTP id 9838EC1662 for ; Tue, 11 Jun 2024 19:36:15 +0000 (UTC) X-FDA: 82219613910.06.0449AFB Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by imf12.hostedemail.com (Postfix) with ESMTP id DD0D34000B for ; Tue, 11 Jun 2024 19:36:13 +0000 (UTC) Authentication-Results: imf12.hostedemail.com; dkim=pass header.d=linux-foundation.org header.s=korg header.b=JB948CVY; spf=pass (imf12.hostedemail.com: domain of akpm@linux-foundation.org designates 139.178.84.217 as permitted sender) smtp.mailfrom=akpm@linux-foundation.org; dmarc=none ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1718134574; h=from:from:sender:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references:dkim-signature; bh=BKSoQBeqyVLDXP1a0GwgL1NP6+fOBxoLMJmMe1bwmyI=; b=o37dS5abO7hzaJ+JhHYMH1eSRsggF7NLojCW//lOsZcOl/+HB4VPl+Apzm2//SyHSN9DvS jjROvt5du88eKLnn9hY0fW2QdpKuKiCIe25yAVqMuOWJaqfa9gndNfWvKNk8qDVR6MXJMI MbFvdn/uS2nM2jMpGthQGblcjtkssI4= ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1718134574; a=rsa-sha256; cv=none; b=F4scmCji7BQ2HDVniEWxCxm968xvPdeZAEVWEKXo9PUtAveYws8NFe/NQ7ByLqm0H6mgjP 8iKLDhs2lKVYWDYFF8LxFTpjrKnymjtWZwX/yvPSDn9InBRiJESUyaRYgp42Wu0vEbA+Q2 N4mcU4Ms6MHKr5bcQIVDrkvuk6lfwFE= ARC-Authentication-Results: i=1; imf12.hostedemail.com; dkim=pass header.d=linux-foundation.org header.s=korg header.b=JB948CVY; spf=pass (imf12.hostedemail.com: domain of akpm@linux-foundation.org designates 139.178.84.217 as permitted sender) smtp.mailfrom=akpm@linux-foundation.org; dmarc=none Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by dfw.source.kernel.org (Postfix) with ESMTP id C5D446117E; Tue, 11 Jun 2024 19:36:12 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id C5183C2BD10; Tue, 11 Jun 2024 19:36:11 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linux-foundation.org; s=korg; t=1718134572; bh=GdA6KT5UlfpnGhC3psTeDTcc9QB/a0N+IRhJ64cOBEU=; h=Date:From:To:Cc:Subject:In-Reply-To:References:From; b=JB948CVYmQmTc/5A4rHdUtUx98VRAUbQLgcPx7ZLb7Ixz24iZxaAzJDVfs+JRO5YW CCPvVl85B+g0dyiNojTR+kxGEPc9ZgbqQD2ZBp34OLwozipdz5vU+CNeaE3NaT5REm svy2ZcgGUGTCQSvDFEiwKvklcemFxCLjWAbltRSA= Date: Tue, 11 Jun 2024 12:36:11 -0700 From: Andrew Morton To: David Hildenbrand Cc: linux-kernel@vger.kernel.org, linux-mm@kvack.org, linux-hyperv@vger.kernel.org, virtualization@lists.linux.dev, xen-devel@lists.xenproject.org, kasan-dev@googlegroups.com, Mike Rapoport , Oscar Salvador , "K. Y. Srinivasan" , Haiyang Zhang , Wei Liu , Dexuan Cui , "Michael S. Tsirkin" , Jason Wang , Xuan Zhuo , Eugenio =?ISO-8859-1?Q?P=E9rez?= , Juergen Gross , Stefano Stabellini , Oleksandr Tyshchenko , Alexander Potapenko , Marco Elver , Dmitry Vyukov Subject: Re: [PATCH v1 2/3] mm/memory_hotplug: initialize memmap of !ZONE_DEVICE with PageOffline() instead of PageReserved() Message-Id: <20240611123611.36d0633c65ec8171152fe803@linux-foundation.org> In-Reply-To: <824c319a-530e-4153-80f5-20e2c463fa81@redhat.com> References: <20240607090939.89524-1-david@redhat.com> <20240607090939.89524-3-david@redhat.com> <824c319a-530e-4153-80f5-20e2c463fa81@redhat.com> X-Mailer: Sylpheed 3.8.0beta1 (GTK+ 2.24.33; x86_64-pc-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-Rspamd-Server: rspam03 X-Stat-Signature: j7cnrgwpejydg6fciwyp581qn6dffs1x X-Rspamd-Queue-Id: DD0D34000B X-Rspam-User: X-HE-Tag: 1718134573-263437 X-HE-Meta: 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 JXDk10Vf jbUwFsntXqCUWiouY8KPS10+CIKyaOqfavSfpIkcPkD4Vjw0I3ncaY0kMvjINHc4K+7/9y29MxLE65BfN852nw/2DCnQb15YmzIYc4jgbCJiA2jOi5t58INS2OcooIyfSjKFfZidSuoq+l0WPx4dca1n6exlQiYVHklw/rnFyQdtbUAvM67yUGsuPKXika1vBKmdFQRA3tYxCOsQxHw9uDRk46ajUUUFArAUhoziaFEGFYePGnKqyi9wWbcEirQpvTG0g6cUaN0W9f/DPJUhDldXvgTCVkh7WI4cQEN2CXy/WHtGCSfqB42tJUOcn4i2RkJnkmPTi0Ir+gKy0y9+KhbELdg== 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: List-Subscribe: List-Unsubscribe: On Tue, 11 Jun 2024 11:42:56 +0200 David Hildenbrand wrote: > > We'll leave the ZONE_DEVICE case alone for now. > > > > @Andrew, can we add here: > > "Note that self-hosted vmemmap pages will no longer be marked as > reserved. This matches ordinary vmemmap pages allocated from the buddy > during memory hotplug. Now, really only vmemmap pages allocated from > memblock during early boot will be marked reserved. Existing > PageReserved() checks seem to be handling all relevant cases correctly > even after this change." Done, thanks.