From mboxrd@z Thu Jan 1 00:00:00 1970 From: ddaney.cavm@gmail.com (David Daney) Date: Wed, 27 Apr 2016 11:07:14 -0700 Subject: [PATCH v6 12/14] acpi, numa, srat: Improve SRAT error detection and add messages. In-Reply-To: <1461780436-27182-1-git-send-email-ddaney.cavm@gmail.com> References: <1461780436-27182-1-git-send-email-ddaney.cavm@gmail.com> Message-ID: <1461780436-27182-13-git-send-email-ddaney.cavm@gmail.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org From: David Daney Loosely based on code from Robert Richter and Hanjun Guo. Improve out of range node detection as well as allow for Larger SRAT entities. Add printing of nice messages. Signed-off-by: David Daney --- drivers/acpi/numa.c | 15 +++++++++++---- 1 file changed, 11 insertions(+), 4 deletions(-) diff --git a/drivers/acpi/numa.c b/drivers/acpi/numa.c index d7d0499..50c8f42 100644 --- a/drivers/acpi/numa.c +++ b/drivers/acpi/numa.c @@ -252,8 +252,11 @@ acpi_numa_memory_affinity_init(struct acpi_srat_mem_affinity *ma) if (srat_disabled()) goto out_err; - 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); goto out_err_bad_srat; + } if ((ma->flags & ACPI_SRAT_MEM_ENABLED) == 0) goto out_err; hotpluggable = ma->flags & ACPI_SRAT_MEM_HOT_PLUGGABLE; @@ -267,13 +270,17 @@ acpi_numa_memory_affinity_init(struct acpi_srat_mem_affinity *ma) pxm &= 0xff; node = acpi_map_pxm_to_node(pxm); - if (node < 0) { - printk(KERN_ERR "SRAT: Too many proximity domains.\n"); + if (node == NUMA_NO_NODE || node >= MAX_NUMNODES) { + pr_err("SRAT: Too many proximity domains.\n"); goto out_err_bad_srat; } - if (numa_add_memblk(node, start, end) < 0) + if (numa_add_memblk(node, start, end) < 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); goto out_err_bad_srat; + } node_set(node, numa_nodes_parsed); -- 1.7.11.7