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 2DAA6C433F5 for ; Mon, 14 Mar 2022 15:13:14 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 9801F6B0072; Mon, 14 Mar 2022 11:13:13 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 92F496B0073; Mon, 14 Mar 2022 11:13:13 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 7F79D8D0001; Mon, 14 Mar 2022 11:13:13 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0224.hostedemail.com [216.40.44.224]) by kanga.kvack.org (Postfix) with ESMTP id 6EF126B0072 for ; Mon, 14 Mar 2022 11:13:13 -0400 (EDT) Received: from smtpin19.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay01.hostedemail.com (Postfix) with ESMTP id 1867A18259C4C for ; Mon, 14 Mar 2022 15:13:13 +0000 (UTC) X-FDA: 79243335066.19.FB73D32 Received: from smtp-out2.suse.de (smtp-out2.suse.de [195.135.220.29]) by imf18.hostedemail.com (Postfix) with ESMTP id 8D3BA1C0032 for ; Mon, 14 Mar 2022 15:13:12 +0000 (UTC) Received: from imap2.suse-dmz.suse.de (imap2.suse-dmz.suse.de [192.168.254.74]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-521) server-digest SHA512) (No client certificate requested) by smtp-out2.suse.de (Postfix) with ESMTPS id 7033B1F37E; Mon, 14 Mar 2022 15:13:11 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_rsa; t=1647270791; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=jBSpS/m09xNMY5vCWklpEoUaUMpCXrL9CuXnHnOJ8FA=; b=cfz95yY+x09OKCe4IzHCi7gQyB+w8K+vx2EHslRxgc85vKOkCNkeazbRpY/t+jqoHL4TWg GAT9Rcy0Hcn1aYKu0mO3dA6V8+K5VlY/il97x+9IVgcelldFpR218ChEM2hYGGSXwNwG7x 69zGRlyQ69BebyTmo6USwDvBQneBSKw= DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_ed25519; t=1647270791; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=jBSpS/m09xNMY5vCWklpEoUaUMpCXrL9CuXnHnOJ8FA=; b=vAT7nYNXRCBrH+W9wufewXF71/cdEmtswyB6Su3/AlAhm7ydOrwH513tuckuc84OLQcPL3 zw5Oj883y9DWzCAA== Received: from imap2.suse-dmz.suse.de (imap2.suse-dmz.suse.de [192.168.254.74]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-521) server-digest SHA512) (No client certificate requested) by imap2.suse-dmz.suse.de (Postfix) with ESMTPS id E228813B35; Mon, 14 Mar 2022 15:13:10 +0000 (UTC) Received: from dovecot-director2.suse.de ([192.168.254.65]) by imap2.suse-dmz.suse.de with ESMTPSA id x/3gM4ZbL2JyDQAAMHmgww (envelope-from ); Mon, 14 Mar 2022 15:13:10 +0000 Date: Mon, 14 Mar 2022 16:13:09 +0100 From: Oscar Salvador To: "Huang, Ying" Cc: Andrew Morton , Dave Hansen , Abhishek Goel , Baolin Wang , linux-mm@kvack.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH v2] mm: Only re-generate demotion targets when a numa node changes its N_CPU state Message-ID: References: <20220310120749.23077-1-osalvador@suse.de> <87mthxb514.fsf@yhuang6-desk2.ccr.corp.intel.com> <87czip73b4.fsf@yhuang6-desk2.ccr.corp.intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <87czip73b4.fsf@yhuang6-desk2.ccr.corp.intel.com> X-Stat-Signature: f9hrhagm3orpgheafrmdpdm88p97jhwp Authentication-Results: imf18.hostedemail.com; dkim=pass header.d=suse.de header.s=susede2_rsa header.b=cfz95yY+; dkim=pass header.d=suse.de header.s=susede2_ed25519 header.b=vAT7nYNX; spf=pass (imf18.hostedemail.com: domain of osalvador@suse.de designates 195.135.220.29 as permitted sender) smtp.mailfrom=osalvador@suse.de; dmarc=pass (policy=none) header.from=suse.de X-Rspam-User: X-Rspamd-Server: rspam08 X-Rspamd-Queue-Id: 8D3BA1C0032 X-HE-Tag: 1647270792-346504 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 Mon, Mar 14, 2022 at 09:03:59AM +0800, Huang, Ying wrote: > Oscar Salvador writes: > On host machine, PMEM is always exposed via memory hotplug. But later > on, we found that for guest system it's possible for PMEM to be exposed > as normal memory. Could you please elaborate on that? How is it done? I would love to hear the details. Thanks -- Oscar Salvador SUSE Labs