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Mon, 25 Jan 2016 10:22:31 +0000 Received: from mail-bl2on0062.outbound.protection.outlook.com ([65.55.169.62] helo=na01-bl2-obe.outbound.protection.outlook.com) by bombadil.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1aNeHz-0005MC-VC for linux-arm-kernel@lists.infradead.org; Mon, 25 Jan 2016 10:22:28 +0000 Authentication-Results: spf=none (sender IP is ) smtp.mailfrom=Robert.Richter@caviumnetworks.com; Received: from rric.localdomain (92.224.194.101) by BLUPR0701MB1602.namprd07.prod.outlook.com (10.163.84.151) with Microsoft SMTP Server (TLS) id 15.1.365.19; Mon, 25 Jan 2016 10:22:01 +0000 Date: Mon, 25 Jan 2016 11:21:48 +0100 From: Robert Richter To: Hanjun Guo Subject: Re: [PATCH v3 05/12] arm64, acpi, numa: NUMA support based on SRAT and SLIT Message-ID: <20160125102148.GE24726@rric.localdomain> References: <1453541967-3744-1-git-send-email-guohanjun@huawei.com> <1453541967-3744-6-git-send-email-guohanjun@huawei.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <1453541967-3744-6-git-send-email-guohanjun@huawei.com> User-Agent: Mutt/1.5.23 (2014-03-12) X-Originating-IP: [92.224.194.101] X-ClientProxiedBy: VI1PR05CA0030.eurprd05.prod.outlook.com (25.162.33.168) To BLUPR0701MB1602.namprd07.prod.outlook.com (25.163.84.151) X-Microsoft-Exchange-Diagnostics: 1; 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Wysocki" , Will Deacon , linux-kernel@vger.kernel.org, linux-acpi@vger.kernel.org, Shannon Zhao , Catalin Marinas , Ganapatrao Kulkarni , linux-arm-kernel@lists.infradead.org, Hanjun Guo Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Spam-Status: No, score=-4.2 required=5.0 tests=BAD_ENC_HEADER,BAYES_00, RCVD_IN_DNSWL_MED, RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP On 23.01.16 17:39:20, Hanjun Guo wrote: > diff --git a/arch/arm64/kernel/acpi_numa.c b/arch/arm64/kernel/acpi_numa.c > new file mode 100644 > index 0000000..f7f7533 > --- /dev/null > +++ b/arch/arm64/kernel/acpi_numa.c > +/* Callback for parsing of the Proximity Domain <-> Memory Area mappings */ > +int __init acpi_numa_memory_affinity_init(struct acpi_srat_mem_affinity *ma) > +{ > + u64 start, end; > + int node, pxm; > + > + if (srat_disabled()) > + return -EINVAL; > + > + if (ma->header.length != sizeof(struct acpi_srat_mem_affinity)) { Must be: ma->header.length < sizeof(struct acpi_srat_mem_affinity)) { Allow extensions to struct acpi_srat_mem_affinity in newer versions. > + bad_srat(); > + return -EINVAL; We need a pr_err() here to avoid that numa setup fails silently due to bad fw. This applies to all error paths. See my delta patch below. You can merge it with your patch. -Robert > + } From 78945c73e4ec03756a135a75133ed29694a7a0f2 Mon Sep 17 00:00:00 2001 From: Robert Richter Date: Wed, 11 Nov 2015 09:53:39 +0100 Subject: [PATCH] arm64, acpi, numa: Add error messages for bad SRAT tables Signed-off-by: Robert Richter --- arch/arm64/kernel/acpi_numa.c | 15 +++++++++++++-- 1 file changed, 13 insertions(+), 2 deletions(-) diff --git a/arch/arm64/kernel/acpi_numa.c b/arch/arm64/kernel/acpi_numa.c index f7f7533761cd..936ad6c43740 100644 --- a/arch/arm64/kernel/acpi_numa.c +++ b/arch/arm64/kernel/acpi_numa.c @@ -143,6 +143,8 @@ void __init acpi_numa_gicc_affinity_init(struct acpi_srat_gicc_affinity *pa) return; if (pa->header.length < sizeof(struct acpi_srat_gicc_affinity)) { + pr_err("SRAT: Invalid SRAT header length: %d\n", + pa->header.length); bad_srat(); return; } @@ -166,7 +168,7 @@ void __init acpi_numa_gicc_affinity_init(struct acpi_srat_gicc_affinity *pa) } if (get_mpidr_in_madt(pa->acpi_processor_uid, &mpidr)) { - pr_warn("SRAT: PXM %d with ACPI ID %d has no valid MPIDR in MADT\n", + pr_err("SRAT: PXM %d with ACPI ID %d has no valid MPIDR in MADT\n", pxm, pa->acpi_processor_uid); bad_srat(); return; @@ -190,7 +192,9 @@ int __init acpi_numa_memory_affinity_init(struct acpi_srat_mem_affinity *ma) if (srat_disabled()) return -EINVAL; - if (ma->header.length != sizeof(struct acpi_srat_mem_affinity)) { + if (ma->header.length < sizeof(struct acpi_srat_mem_affinity)) { + pr_err("SRAT: Unexpected header length: %d\n", + ma->header.length); bad_srat(); return -EINVAL; } @@ -216,10 +220,17 @@ int __init acpi_numa_memory_affinity_init(struct acpi_srat_mem_affinity *ma) (unsigned long long) start, (unsigned long long) end - 1); if (numa_add_memblk(node, start, (end - start)) < 0) { + pr_err("SRAT: Failed to add memblk to node %u [mem %#010Lx-%#010Lx]\n", + node, (unsigned long long) start, + (unsigned long long) end - 1); bad_srat(); return -EINVAL; } + pr_info("SRAT: Node %u PXM %u [mem %#010Lx-%#010Lx]\n", + node, pxm, + (unsigned long long) start, (unsigned long long) end - 1); + return 0; }