From: David Daney <david.daney@xxxxxxxxxx>
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@xxxxxxxxxx>
---
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 8ba90ad..d244018 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
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