From nobody Mon Feb 9 15:08:59 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=1599820586; cv=none; d=zohomail.com; s=zohoarc; b=gUFOcvZPxUv7TgF03TnIDuAHK9zNSU2ye8Mr0K8/nDBhzJRpEZnHIrOfrNKwbN2auC/djmzO4FZ9sbIIgOTn6cxAE0KjHV4on2HAb4e06DqTpKIRhDZiZmc5/huMQWXr7DuTIOUZt7Os5MhY9JP7ipUM8Q4Aw+a5HfIO+vJmLfc= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1599820586; 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=pcPWZv9PYAHyw7ygKg8TV8AW3ZEfFOjouUb95Y7pmVU=; b=l9f+aboRueLXVR75bUjZJEGacKb1GtD2ZUWUJe8GGg6ijOmG2ls58iAGREZLGulJeUQKZbQ/jV6lXh6X3iHgvG1hx6dT+/3NGkAj91nEXYdq6YwIYvCS1q/nO8bilKSIyMKq+4rxC6l1oSau9z48HWIxDViOadcEjwPm9dl3eIc= 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 1599820586745196.43705360873435; Fri, 11 Sep 2020 03:36:26 -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 1kGgPY-0002Th-IK; Fri, 11 Sep 2020 10:36:08 +0000 Received: from all-amaz-eas1.inumbo.com ([34.197.232.57] helo=us1-amaz-eas2.inumbo.com) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1kGgPX-0002T8-Kp for xen-devel@lists.xenproject.org; Fri, 11 Sep 2020 10:36:07 +0000 Received: from us-smtp-1.mimecast.com (unknown [205.139.110.120]) by us1-amaz-eas2.inumbo.com (Halon) with ESMTP id 68d7a7eb-3c6b-444d-b477-dc34e8ae3aaf; Fri, 11 Sep 2020 10:36:07 +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-488-8nXwlIW-OjOX_tpbFlQW3g-1; Fri, 11 Sep 2020 06:36:03 -0400 Received: from smtp.corp.redhat.com (int-mx03.intmail.prod.int.phx2.redhat.com [10.5.11.13]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id EBF911008301; Fri, 11 Sep 2020 10:36:00 +0000 (UTC) Received: from t480s.redhat.com (ovpn-113-186.ams2.redhat.com [10.36.113.186]) by smtp.corp.redhat.com (Postfix) with ESMTP id 4B94C81C49; Fri, 11 Sep 2020 10:35:57 +0000 (UTC) X-Inumbo-ID: 68d7a7eb-3c6b-444d-b477-dc34e8ae3aaf DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1599820566; 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=pcPWZv9PYAHyw7ygKg8TV8AW3ZEfFOjouUb95Y7pmVU=; b=U5Ur8RRHZosiMT46QmThdNtOTYxMN4LERxUDr/zUrV1aB0WS1kRYr/1+XjXZWAYXCjNUm1 ddFrWvq5YRojmgGhyHb0Y1Eisa5c/sjfjZeUax1zHIczYWQH+T0Q9nTNAQSGXAqAr+z9Ge 4pG2FiMIFkQd2qN2NGsPeV4VOtsiGsw= X-MC-Unique: 8nXwlIW-OjOX_tpbFlQW3g-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 , Juergen Gross , Andrew Morton , Michal Hocko , Boris Ostrovsky , Stefano Stabellini , =?UTF-8?q?Roger=20Pau=20Monn=C3=A9?= , Julien Grall , Pankaj Gupta , Baoquan He , Wei Yang Subject: [PATCH v4 7/8] xen/balloon: try to merge system ram resources Date: Fri, 11 Sep 2020 12:34:58 +0200 Message-Id: <20200911103459.10306-8-david@redhat.com> In-Reply-To: <20200911103459.10306-1-david@redhat.com> References: <20200911103459.10306-1-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 10.5.11.13 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. Reviewed-by: Juergen Gross 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: Wei Yang --- 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 9f40a294d398d..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, MHP_NONE); + rc =3D add_memory_resource(nid, resource, MEMHP_MERGE_RESOURCE); unlock_device_hotplug(); mutex_lock(&balloon_mutex); =20 --=20 2.26.2