From nobody Tue Nov 26 09:36:21 2024 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass(p=none dis=none) header.from=nongnu.org ARC-Seal: i=1; a=rsa-sha256; t=1709224012; cv=none; d=zohomail.com; s=zohoarc; b=ArrRJkpLBw+XQn9P5j+SYHSkndHgWiwdB/dFaCXyKaTIO230AnCcYx014JKwkh0AUQaZWGuCmwTcDLt2Z/ZnticQPyBZvTGOJlFKQElfNkpmtcoaT5sAAVAxgEWx7LVNiHEDDthz8AA4vLpgseBIW7lyc8pf5qBwTXtk4Ptus98= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1709224012; h=Content-Type:Content-Transfer-Encoding:Cc:Cc:Date:Date:From:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:Reply-To:Reply-To:References:Sender:Subject:Subject:To:To:Message-Id; bh=Oq1BxPVEbTiJonU+ZdQgruS/LUMTA2SdU162ma7FGCo=; b=n82dyrXfu0So/yTmnVugflbgdrUQ37Jh6QNNaWsCif8DjEs2K5g0AlQTeMHlLrsGI0DpjC5WXJt/Xvnqn1zqzy9izs/GhjoWSIxr7vzoe/JDuaj4LCVJuGLaAgqS2fftI1zB/60w/ub9GNEipt6gBFxNPAAcnvEoHEaw4hBgyVo= ARC-Authentication-Results: i=1; mx.zohomail.com; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass header.from= (p=none dis=none) Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 170922401226473.88356803574754; Thu, 29 Feb 2024 08:26:52 -0800 (PST) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1rfjEp-0006me-F5; Thu, 29 Feb 2024 11:26:27 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1rfjEj-0006m2-VB for qemu-devel@nongnu.org; Thu, 29 Feb 2024 11:26:22 -0500 Received: from frasgout.his.huawei.com ([185.176.79.56]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1rfjEh-0006zA-Mj for qemu-devel@nongnu.org; Thu, 29 Feb 2024 11:26:21 -0500 Received: from mail.maildlp.com (unknown [172.18.186.231]) by frasgout.his.huawei.com (SkyGuard) with ESMTP id 4TlxMS6PsKz6K8sx; Fri, 1 Mar 2024 00:22:28 +0800 (CST) Received: from lhrpeml500005.china.huawei.com (unknown [7.191.163.240]) by mail.maildlp.com (Postfix) with ESMTPS id A4880140B63; Fri, 1 Mar 2024 00:26:16 +0800 (CST) Received: from SecurePC-101-06.china.huawei.com (10.122.247.231) by lhrpeml500005.china.huawei.com (7.191.163.240) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.1.2507.35; Thu, 29 Feb 2024 16:26:16 +0000 To: Liu Jingqi , , , "Michael S . Tsirkin" , Igor Mammedov , Ani Sinha CC: , Markus Armbruster , Daniel Black , Subject: [PATCH 1/2] hmat acpi: Do not add Memory Proximity Domain Attributes Structure targetting non existent memory. Date: Thu, 29 Feb 2024 16:25:44 +0000 Message-ID: <20240229162545.7887-2-Jonathan.Cameron@huawei.com> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20240229162545.7887-1-Jonathan.Cameron@huawei.com> References: <20240229162545.7887-1-Jonathan.Cameron@huawei.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Originating-IP: [10.122.247.231] X-ClientProxiedBy: lhrpeml100001.china.huawei.com (7.191.160.183) To lhrpeml500005.china.huawei.com (7.191.163.240) Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=185.176.79.56; envelope-from=jonathan.cameron@huawei.com; helo=frasgout.his.huawei.com X-Spam_score_int: -41 X-Spam_score: -4.2 X-Spam_bar: ---- X-Spam_report: (-4.2 / 5.0 requ) BAYES_00=-1.9, RCVD_IN_DNSWL_MED=-2.3, RCVD_IN_MSPIKE_H4=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Reply-to: Jonathan Cameron From: Jonathan Cameron via Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZM-MESSAGEID: 1709224014407100005 Content-Type: text/plain; charset="utf-8" If qemu is started with a proximity node containing CPUs alone, it will provide one of these structures to say memory in this node is directly connected to itself. This description is arguably pointless even if there is memory in the node. If there is no memory present, and hence no SRAT entry it breaks Linux HMAT passing and the table is rejected. https://elixir.bootlin.com/linux/latest/source/drivers/acpi/numa/hmat.c#L444 Signed-off-by: Jonathan Cameron --- hw/acpi/hmat.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/hw/acpi/hmat.c b/hw/acpi/hmat.c index 3042d223c8..723ae28d32 100644 --- a/hw/acpi/hmat.c +++ b/hw/acpi/hmat.c @@ -204,6 +204,13 @@ static void hmat_build_table_structs(GArray *table_dat= a, NumaState *numa_state) build_append_int_noprefix(table_data, 0, 4); /* Reserved */ =20 for (i =3D 0; i < numa_state->num_nodes; i++) { + /* + * Linux rejects whole HMAT table if a node with no memory + * has one of these structures listing it as a target. + */ + if (!numa_state->nodes[i].node_mem) { + continue; + } flags =3D 0; =20 if (numa_state->nodes[i].initiator < MAX_NODES) { --=20 2.39.2