From nobody Sun Feb 8 18:30:01 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=1599729304; cv=none; d=zohomail.com; s=zohoarc; b=EsEJlnMc+1jMyAD8TIGKyZ2e0ylZYWPuo30En8gMaVx4wmgmmG81u+Py+AUoUhYhdAHzxwDXnNyrkoc4Xd5gYi58i3E6kEyUJxipQSc5WNar6sa0QXH+RBMu+cR8Fllpgs/RpTo+iTiGC3Zi+xrKql50oAwTVt+/0FHy0bULE9A= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1599729304; 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=cXv37Wq0w6bh/IDwO5Jjfi/yRHXiTgNXTdqabfiu2qVmKDTgySGCBuILC0zQBiWzQv2gu/r2TLHtdgruYlrgpmHz5WXc1c+7lj4lUzeG2GWCwckJ4JUpr68MBnOmNxxlNx775P33ys2/JwxzC0dQpm1V+CbddM3vFSiNRLBJVTs= 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 1599729304208890.2025091163922; Thu, 10 Sep 2020 02:15:04 -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 1kGIfL-0007QW-2P; Thu, 10 Sep 2020 09:14:51 +0000 Received: from us1-rack-iad1.inumbo.com ([172.99.69.81]) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1kGIfJ-0007Pp-PN for xen-devel@lists.xenproject.org; Thu, 10 Sep 2020 09:14:49 +0000 Received: from us-smtp-delivery-1.mimecast.com (unknown [207.211.31.120]) by us1-rack-iad1.inumbo.com (Halon) with ESMTP id 0e4b17e5-7d6c-4499-9f44-67b897e8252e; Thu, 10 Sep 2020 09:14:49 +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-97-F3s5MUEMNf-YywNaYeYo4Q-1; Thu, 10 Sep 2020 05:14:44 -0400 Received: from smtp.corp.redhat.com (int-mx08.intmail.prod.int.phx2.redhat.com [10.5.11.23]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id E63CB18B9F00; Thu, 10 Sep 2020 09:14:41 +0000 (UTC) Received: from t480s.redhat.com (ovpn-113-88.ams2.redhat.com [10.36.113.88]) by smtp.corp.redhat.com (Postfix) with ESMTP id 3BE081A8EC; Thu, 10 Sep 2020 09:14:38 +0000 (UTC) X-Inumbo-ID: 0e4b17e5-7d6c-4499-9f44-67b897e8252e DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1599729288; 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=ggBtz7HKaK9A03rUvqwACI3V5StcqeAQSdpO36PoTftsPskhPBdgrEyTOhwaQYM1OKE3wA pR898mI2ALQhwhlu/seAQIRFflXS0KhWRYb2rfmaeXXrFfuPiVz9bwjihsnA5iuft7R37q qljDlcUOqpd+I/LtpwnSONGX5aVM+rQ= X-MC-Unique: F3s5MUEMNf-YywNaYeYo4Q-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 v3 6/7] xen/balloon: try to merge system ram resources Date: Thu, 10 Sep 2020 11:13:39 +0200 Message-Id: <20200910091340.8654-7-david@redhat.com> In-Reply-To: <20200910091340.8654-1-david@redhat.com> References: <20200910091340.8654-1-david@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable X-Scanned-By: MIMEDefang 2.84 on 10.5.11.23 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 --- 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