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 X-Spam-Level: X-Spam-Status: No, score=-13.0 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id C3EFAC433E1 for ; Fri, 17 Jul 2020 18:02:32 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 95882206BE for ; Fri, 17 Jul 2020 18:02:32 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 95882206BE Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=huawei.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id 3E9136B0027; Fri, 17 Jul 2020 14:02:32 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 3978A6B007B; Fri, 17 Jul 2020 14:02:32 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 261178D0003; Fri, 17 Jul 2020 14:02:32 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0217.hostedemail.com [216.40.44.217]) by kanga.kvack.org (Postfix) with ESMTP id 0D52B6B0027 for ; Fri, 17 Jul 2020 14:02:32 -0400 (EDT) Received: from smtpin27.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay03.hostedemail.com (Postfix) with ESMTP id B4E4F8248047 for ; Fri, 17 Jul 2020 18:02:31 +0000 (UTC) X-FDA: 77048337702.27.trade43_421076526f0c Received: from filter.hostedemail.com (10.5.16.251.rfc1918.com [10.5.16.251]) by smtpin27.hostedemail.com (Postfix) with ESMTP id C4C16263A3 for ; Fri, 17 Jul 2020 18:01:47 +0000 (UTC) X-HE-Tag: trade43_421076526f0c X-Filterd-Recvd-Size: 5976 Received: from huawei.com (lhrrgout.huawei.com [185.176.76.210]) by imf06.hostedemail.com (Postfix) with ESMTP for ; Fri, 17 Jul 2020 18:01:47 +0000 (UTC) Received: from lhreml710-chm.china.huawei.com (unknown [172.18.7.107]) by Forcepoint Email with ESMTP id 9528D7C04693B679C619; Fri, 17 Jul 2020 19:01:45 +0100 (IST) Received: from lhrphicprd00229.huawei.com (10.123.41.22) by lhreml710-chm.china.huawei.com (10.201.108.61) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256) id 15.1.1913.5; Fri, 17 Jul 2020 19:01:45 +0100 From: Jonathan Cameron To: , , , CC: Lorenzo Pieralisi , Bjorn Helgaas , , , Ingo Molnar , , Tony Luck , Fenghua Yu , Thomas Gleixner , , Dan Williams , Song Bao Hua , Jonathan Cameron Subject: [PATCH v2 2/6] ACPI: Do not create new NUMA domains from ACPI static tables that are not SRAT Date: Sat, 18 Jul 2020 01:59:55 +0800 Message-ID: <20200717175959.899775-3-Jonathan.Cameron@huawei.com> X-Mailer: git-send-email 2.19.1 In-Reply-To: <20200717175959.899775-1-Jonathan.Cameron@huawei.com> References: <20200717175959.899775-1-Jonathan.Cameron@huawei.com> MIME-Version: 1.0 Content-Type: text/plain X-Originating-IP: [10.123.41.22] X-ClientProxiedBy: lhreml706-chm.china.huawei.com (10.201.108.55) To lhreml710-chm.china.huawei.com (10.201.108.61) X-CFilter-Loop: Reflected X-Rspamd-Queue-Id: C4C16263A3 X-Spamd-Result: default: False [0.00 / 100.00] X-Rspamd-Server: rspam02 Content-Transfer-Encoding: quoted-printable 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: Several ACPI static tables contain references to proximity domains. ACPI 6.3 has clarified that only entries in SRAT may define a new domain (sec 5.2.16). Those tables described in the ACPI spec have additional clarifying text. NFIT: Table 5-132, "Integer that represents the proximity domain to which the memory belongs= . This number must match with corresponding entry in the SRAT table." HMAT: Table 5-145, "... This number must match with the corresponding entry in the SRAT table's processor affinity structure ... if the initiator is a processor= , or the Generic Initiator Affinity Structure if the initiator is a generi= c initiator". IORT and DMAR are defined by external specifications. Intel Virtualization Technology for Directed I/O Rev 3.1 does not make an= y explicit statements, but the general SRAT statement above will still appl= y. https://software.intel.com/sites/default/files/managed/c5/15/vt-directed-= io-spec.pdf IO Remapping Table, Platform Design Document rev D, also makes not explic= it statement, but refers to ACPI SRAT table for more information and again t= he generic SRAT statement above applies. https://developer.arm.com/documentation/den0049/d/ In conclusion, any proximity domain specified in these tables, should be = a reference to a proximity domain also found in SRAT, and they should not b= e able to instantiate a new domain. Hence we switch to pxm_to_node() which will= only return existing nodes. Signed-off-by: Jonathan Cameron --- drivers/acpi/arm64/iort.c | 2 +- drivers/acpi/nfit/core.c | 3 +-- drivers/acpi/numa/hmat.c | 2 +- drivers/iommu/intel/dmar.c | 2 +- 4 files changed, 4 insertions(+), 5 deletions(-) diff --git a/drivers/acpi/arm64/iort.c b/drivers/acpi/arm64/iort.c index 28a6b387e80e..eb0f158612c8 100644 --- a/drivers/acpi/arm64/iort.c +++ b/drivers/acpi/arm64/iort.c @@ -1293,7 +1293,7 @@ static int __init arm_smmu_v3_set_proximity(struct= device *dev, =20 smmu =3D (struct acpi_iort_smmu_v3 *)node->node_data; if (smmu->flags & ACPI_IORT_SMMU_V3_PXM_VALID) { - int dev_node =3D acpi_map_pxm_to_node(smmu->pxm); + int dev_node =3D pxm_to_node(smmu->pxm); =20 if (dev_node !=3D NUMA_NO_NODE && !node_online(dev_node)) return -EINVAL; diff --git a/drivers/acpi/nfit/core.c b/drivers/acpi/nfit/core.c index 7c138a4edc03..d933a4636d00 100644 --- a/drivers/acpi/nfit/core.c +++ b/drivers/acpi/nfit/core.c @@ -2947,8 +2947,7 @@ static int acpi_nfit_register_region(struct acpi_nf= it_desc *acpi_desc, if (spa->flags & ACPI_NFIT_PROXIMITY_VALID) { ndr_desc->numa_node =3D acpi_map_pxm_to_online_node( spa->proximity_domain); - ndr_desc->target_node =3D acpi_map_pxm_to_node( - spa->proximity_domain); + ndr_desc->target_node =3D pxm_to_node(spa->proximity_domain); } else { ndr_desc->numa_node =3D NUMA_NO_NODE; ndr_desc->target_node =3D NUMA_NO_NODE; diff --git a/drivers/acpi/numa/hmat.c b/drivers/acpi/numa/hmat.c index 2c32cfb72370..cf6df2df26cd 100644 --- a/drivers/acpi/numa/hmat.c +++ b/drivers/acpi/numa/hmat.c @@ -666,7 +666,7 @@ static void hmat_register_target_device(struct memory= _target *target, =20 pdev->dev.numa_node =3D acpi_map_pxm_to_online_node(target->memory_pxm)= ; info =3D (struct memregion_info) { - .target_node =3D acpi_map_pxm_to_node(target->memory_pxm), + .target_node =3D pxm_to_node(target->memory_pxm), }; rc =3D platform_device_add_data(pdev, &info, sizeof(info)); if (rc < 0) { diff --git a/drivers/iommu/intel/dmar.c b/drivers/iommu/intel/dmar.c index 683b812c5c47..b1acdaead059 100644 --- a/drivers/iommu/intel/dmar.c +++ b/drivers/iommu/intel/dmar.c @@ -473,7 +473,7 @@ static int dmar_parse_one_rhsa(struct acpi_dmar_heade= r *header, void *arg) rhsa =3D (struct acpi_dmar_rhsa *)header; for_each_drhd_unit(drhd) { if (drhd->reg_base_addr =3D=3D rhsa->base_address) { - int node =3D acpi_map_pxm_to_node(rhsa->proximity_domain); + int node =3D pxm_to_node(rhsa->proximity_domain); =20 if (!node_online(node)) node =3D NUMA_NO_NODE; --=20 2.19.1