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ACPI / NUMA: Improve SRAT error detection and add messages

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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 <david.daney@cavium.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This commit is contained in:
David Daney 2016-05-24 15:35:42 -07:00 committed by Rafael J. Wysocki
parent 3770442e79
commit e0af261a43
1 changed files with 11 additions and 4 deletions
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15
drivers/acpi/numa.c
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@ -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);