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=-12.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham 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 DEDDBC47420 for ; Mon, 28 Sep 2020 12:54:19 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 9106021974 for ; Mon, 28 Sep 2020 12:54:19 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 9106021974 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 190CB6B006E; Mon, 28 Sep 2020 08:54:19 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 1663B6B0070; Mon, 28 Sep 2020 08:54:19 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 0A4F46B0071; Mon, 28 Sep 2020 08:54:19 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0210.hostedemail.com [216.40.44.210]) by kanga.kvack.org (Postfix) with ESMTP id E910A6B006E for ; Mon, 28 Sep 2020 08:54:18 -0400 (EDT) Received: from smtpin30.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay02.hostedemail.com (Postfix) with ESMTP id 9E0415003 for ; Mon, 28 Sep 2020 12:54:18 +0000 (UTC) X-FDA: 77312463396.30.boy72_510d0e227181 Received: from filter.hostedemail.com (10.5.16.251.rfc1918.com [10.5.16.251]) by smtpin30.hostedemail.com (Postfix) with ESMTP id 7D308180B3C83 for ; Mon, 28 Sep 2020 12:54:18 +0000 (UTC) X-HE-Tag: boy72_510d0e227181 X-Filterd-Recvd-Size: 6793 Received: from huawei.com (szxga04-in.huawei.com [45.249.212.190]) by imf18.hostedemail.com (Postfix) with ESMTP for ; Mon, 28 Sep 2020 12:54:17 +0000 (UTC) Received: from DGGEMS414-HUB.china.huawei.com (unknown [172.30.72.58]) by Forcepoint Email with ESMTP id 80ABAA965C981C98CB52; Mon, 28 Sep 2020 20:54:14 +0800 (CST) Received: from lhrphicprd00229.huawei.com (10.123.41.22) by DGGEMS414-HUB.china.huawei.com (10.3.19.214) with Microsoft SMTP Server id 14.3.487.0; Mon, 28 Sep 2020 20:54:07 +0800 From: Jonathan Cameron To: , , , , Lorenzo Pieralisi , , Ingo Molnar CC: Bjorn Helgaas , , Thomas Gleixner , , Dan Williams , Brice Goglin , "Sean V Kelley" , , "Borislav Petkov" , Hanjun Guo , Jonathan Cameron Subject: [PATCH v11 1/6] ACPI: Support Generic Initiator only domains Date: Mon, 28 Sep 2020 20:52:30 +0800 Message-ID: <20200928125235.446188-2-Jonathan.Cameron@huawei.com> X-Mailer: git-send-email 2.19.1 In-Reply-To: <20200928125235.446188-1-Jonathan.Cameron@huawei.com> References: <20200928125235.446188-1-Jonathan.Cameron@huawei.com> MIME-Version: 1.0 Content-Type: text/plain X-Originating-IP: [10.123.41.22] X-CFilter-Loop: Reflected 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: Generic Initiators are a new ACPI concept that allows for the description of proximity domains that contain a device which performs memory access (such as a network card) but neither host CPU nor Memory. This patch has the parsing code and provides the infrastructure for an architecture to associate these new domains with their nearest memory processing node. Signed-off-by: Jonathan Cameron --- v11: No change drivers/acpi/numa/srat.c | 69 +++++++++++++++++++++++++++++++++++++++- drivers/base/node.c | 3 ++ include/linux/nodemask.h | 1 + 3 files changed, 72 insertions(+), 1 deletion(-) diff --git a/drivers/acpi/numa/srat.c b/drivers/acpi/numa/srat.c index 15bbaab8500b..d27e8585132d 100644 --- a/drivers/acpi/numa/srat.c +++ b/drivers/acpi/numa/srat.c @@ -130,6 +130,36 @@ acpi_table_print_srat_entry(struct acpi_subtable_hea= der *header) } break; =20 + case ACPI_SRAT_TYPE_GENERIC_AFFINITY: + { + struct acpi_srat_generic_affinity *p =3D + (struct acpi_srat_generic_affinity *)header; + + if (p->device_handle_type =3D=3D 0) { + /* + * For pci devices this may be the only place they + * are assigned a proximity domain + */ + pr_debug("SRAT Generic Initiator(Seg:%u BDF:%u) in proximity domain %= d %s\n", + *(u16 *)(&p->device_handle[0]), + *(u16 *)(&p->device_handle[2]), + p->proximity_domain, + (p->flags & ACPI_SRAT_GENERIC_AFFINITY_ENABLED) ? + "enabled" : "disabled"); + } else { + /* + * In this case we can rely on the device having a + * proximity domain reference + */ + pr_debug("SRAT Generic Initiator(HID=3D%.8s UID=3D%.4s) in proximity = domain %d %s\n", + (char *)(&p->device_handle[0]), + (char *)(&p->device_handle[8]), + p->proximity_domain, + (p->flags & ACPI_SRAT_GENERIC_AFFINITY_ENABLED) ? + "enabled" : "disabled"); + } + } + break; default: pr_warn("Found unsupported SRAT entry (type =3D 0x%x)\n", header->type); @@ -332,6 +362,41 @@ acpi_parse_gicc_affinity(union acpi_subtable_headers= *header, return 0; } =20 +#if defined(CONFIG_X86) || defined(CONFIG_ARM64) +static int __init +acpi_parse_gi_affinity(union acpi_subtable_headers *header, + const unsigned long end) +{ + struct acpi_srat_generic_affinity *gi_affinity; + int node; + + gi_affinity =3D (struct acpi_srat_generic_affinity *)header; + if (!gi_affinity) + return -EINVAL; + acpi_table_print_srat_entry(&header->common); + + if (!(gi_affinity->flags & ACPI_SRAT_GENERIC_AFFINITY_ENABLED)) + return -EINVAL; + + node =3D acpi_map_pxm_to_node(gi_affinity->proximity_domain); + if (node =3D=3D NUMA_NO_NODE || node >=3D MAX_NUMNODES) { + pr_err("SRAT: Too many proximity domains.\n"); + return -EINVAL; + } + node_set(node, numa_nodes_parsed); + node_set_state(node, N_GENERIC_INITIATOR); + + return 0; +} +#else +static int __init +acpi_parse_gi_affinity(union acpi_subtable_headers *header, + const unsigned long end) +{ + return 0; +} +#endif /* defined(CONFIG_X86) || defined (CONFIG_ARM64) */ + static int __initdata parsed_numa_memblks; =20 static int __init @@ -385,7 +450,7 @@ int __init acpi_numa_init(void) =20 /* SRAT: System Resource Affinity Table */ if (!acpi_table_parse(ACPI_SIG_SRAT, acpi_parse_srat)) { - struct acpi_subtable_proc srat_proc[3]; + struct acpi_subtable_proc srat_proc[4]; =20 memset(srat_proc, 0, sizeof(srat_proc)); srat_proc[0].id =3D ACPI_SRAT_TYPE_CPU_AFFINITY; @@ -394,6 +459,8 @@ int __init acpi_numa_init(void) srat_proc[1].handler =3D acpi_parse_x2apic_affinity; srat_proc[2].id =3D ACPI_SRAT_TYPE_GICC_AFFINITY; srat_proc[2].handler =3D acpi_parse_gicc_affinity; + srat_proc[3].id =3D ACPI_SRAT_TYPE_GENERIC_AFFINITY; + srat_proc[3].handler =3D acpi_parse_gi_affinity; =20 acpi_table_parse_entries_array(ACPI_SIG_SRAT, sizeof(struct acpi_table_srat), diff --git a/drivers/base/node.c b/drivers/base/node.c index 508b80f6329b..53383f1f683c 100644 --- a/drivers/base/node.c +++ b/drivers/base/node.c @@ -980,6 +980,8 @@ static struct node_attr node_state_attr[] =3D { #endif [N_MEMORY] =3D _NODE_ATTR(has_memory, N_MEMORY), [N_CPU] =3D _NODE_ATTR(has_cpu, N_CPU), + [N_GENERIC_INITIATOR] =3D _NODE_ATTR(has_generic_initiator, + N_GENERIC_INITIATOR), }; =20 static struct attribute *node_state_attrs[] =3D { @@ -991,6 +993,7 @@ static struct attribute *node_state_attrs[] =3D { #endif &node_state_attr[N_MEMORY].attr.attr, &node_state_attr[N_CPU].attr.attr, + &node_state_attr[N_GENERIC_INITIATOR].attr.attr, NULL }; =20 diff --git a/include/linux/nodemask.h b/include/linux/nodemask.h index 27e7fa36f707..3334ce056335 100644 --- a/include/linux/nodemask.h +++ b/include/linux/nodemask.h @@ -399,6 +399,7 @@ enum node_states { #endif N_MEMORY, /* The node has memory(regular, high, movable) */ N_CPU, /* The node has one or more cpus */ + N_GENERIC_INITIATOR, /* The node has one or more Generic Initiators */ NR_NODE_STATES }; =20 --=20 2.19.1