From nobody Sun Feb 8 14:35:19 2026 Delivered-To: importer@patchew.org Received-SPF: pass (zohomail.com: domain of lists.xenproject.org designates 192.237.175.120 as permitted sender) client-ip=192.237.175.120; envelope-from=xen-devel-bounces@lists.xenproject.org; helo=lists.xenproject.org; Authentication-Results: mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of lists.xenproject.org designates 192.237.175.120 as permitted sender) smtp.mailfrom=xen-devel-bounces@lists.xenproject.org; dmarc=pass(p=none dis=none) header.from=redhat.com ARC-Seal: i=1; a=rsa-sha256; t=1599595908; cv=none; d=zohomail.com; s=zohoarc; b=kKeq4VnMOJbsWVKVW4FU+9+5h8p2NX36OvJp1NP4+/+gLqtSA9Z9s2KIZ+kbi3IFSSTfZs3aIrTM4pP8xji7W1Nxn3fEwgK9pR68ZHG3kTdVR1b9zt3AJfw/EI5zoeA29btJoIAWGSNrA0WuALRkpQp4WdqEEkzHgscilOY/PlQ= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1599595908; h=Content-Type:Content-Transfer-Encoding:Cc:Date:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:To; bh=8K1xYXTYUbnlqXd2ZY48Xr9MumdD7TqIS7rIjkX/laU=; b=WhsVcFhffCzt1n0207SuxTTh1ydAg8gp7flVOrtU3FGmb1G2BjdPIusyO+AHFuPpKACkUp4M9inxkIkZZJW2KBHGtduZtGZalVDzYMK82lKdTUVxVhbo5Mn6FeGRZLmOwyO8x4ZhAAUL2qlNDGWI3csxSBhZVG/wwxs1D/TRT/8= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of lists.xenproject.org designates 192.237.175.120 as permitted sender) smtp.mailfrom=xen-devel-bounces@lists.xenproject.org; dmarc=pass header.from= (p=none dis=none) header.from= Return-Path: Received: from lists.xenproject.org (lists.xenproject.org [192.237.175.120]) by mx.zohomail.com with SMTPS id 1599595908481543.0465141940358; Tue, 8 Sep 2020 13:11:48 -0700 (PDT) Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1kFjxk-0004rk-W8; Tue, 08 Sep 2020 20:11:32 +0000 Received: from us1-rack-iad1.inumbo.com ([172.99.69.81]) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1kFjxj-0004r1-8U for xen-devel@lists.xenproject.org; Tue, 08 Sep 2020 20:11:31 +0000 Received: from us-smtp-delivery-124.mimecast.com (unknown [216.205.24.124]) by us1-rack-iad1.inumbo.com (Halon) with ESMTP id 16b925da-dbe0-4b8b-be9d-7f5d8c50bc6b; Tue, 08 Sep 2020 20:11:30 +0000 (UTC) Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-401-Y-wM1DyKPe22UQB0ydanhg-1; Tue, 08 Sep 2020 16:11:28 -0400 Received: from smtp.corp.redhat.com (int-mx04.intmail.prod.int.phx2.redhat.com [10.5.11.14]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id CA4DC85C734; Tue, 8 Sep 2020 20:11:25 +0000 (UTC) Received: from t480s.redhat.com (ovpn-115-46.ams2.redhat.com [10.36.115.46]) by smtp.corp.redhat.com (Postfix) with ESMTP id 942655D9E8; Tue, 8 Sep 2020 20:11:16 +0000 (UTC) X-Inumbo-ID: 16b925da-dbe0-4b8b-be9d-7f5d8c50bc6b DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1599595890; h=from:from: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; bh=8K1xYXTYUbnlqXd2ZY48Xr9MumdD7TqIS7rIjkX/laU=; b=X/VuyEf12mvS7gHzVPlZj851Rjk4FB9KC2zs7IO3wdIL6wtrEDghFRARb4m2Ja9PHrVhm+ ZvypGzbTPXvxSJw/nMoiZXVo9yLEKiGC6Upj9GAQdxChWYSVAmHmQOT9d2s2ouU1nsMtjZ OgbGnlJm6AY9jh7jxXGBHtKxLVnO34M= X-MC-Unique: Y-wM1DyKPe22UQB0ydanhg-1 From: David Hildenbrand To: linux-kernel@vger.kernel.org Cc: virtualization@lists.linux-foundation.org, linux-mm@kvack.org, linux-hyperv@vger.kernel.org, xen-devel@lists.xenproject.org, linux-acpi@vger.kernel.org, linux-nvdimm@lists.01.org, linux-s390@vger.kernel.org, Andrew Morton , David Hildenbrand , Michal Hocko , Boris Ostrovsky , Juergen Gross , Stefano Stabellini , =?UTF-8?q?Roger=20Pau=20Monn=C3=A9?= , Julien Grall , Pankaj Gupta , Baoquan He , Wei Yang Subject: [PATCH v2 6/7] xen/balloon: try to merge system ram resources Date: Tue, 8 Sep 2020 22:10:11 +0200 Message-Id: <20200908201012.44168-7-david@redhat.com> In-Reply-To: <20200908201012.44168-1-david@redhat.com> References: <20200908201012.44168-1-david@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable X-Scanned-By: MIMEDefang 2.79 on 10.5.11.14 X-BeenThere: xen-devel@lists.xenproject.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Xen developer discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xenproject.org Sender: "Xen-devel" X-ZohoMail-DKIM: pass (identity @redhat.com) Let's try to merge system ram resources we add, to minimize the number of resources in /proc/iomem. We don't care about the boundaries of individual chunks we added. Cc: Andrew Morton Cc: Michal Hocko Cc: Boris Ostrovsky Cc: Juergen Gross Cc: Stefano Stabellini Cc: Roger Pau Monn=C3=A9 Cc: Julien Grall Cc: Pankaj Gupta Cc: Baoquan He Cc: Wei Yang Signed-off-by: David Hildenbrand Reviewed-by: Juergen Gross --- drivers/xen/balloon.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/xen/balloon.c b/drivers/xen/balloon.c index 7bac38764513d..b57b2067ecbfb 100644 --- a/drivers/xen/balloon.c +++ b/drivers/xen/balloon.c @@ -331,7 +331,7 @@ static enum bp_state reserve_additional_memory(void) mutex_unlock(&balloon_mutex); /* add_memory_resource() requires the device_hotplug lock */ lock_device_hotplug(); - rc =3D add_memory_resource(nid, resource, 0); + rc =3D add_memory_resource(nid, resource, MEMHP_MERGE_RESOURCE); unlock_device_hotplug(); mutex_lock(&balloon_mutex); =20 --=20 2.26.2