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authorThomas Renninger <trenn@suse.de>2012-07-31 17:41:09 +0200
committerLen Brown <len.brown@intel.com>2012-08-03 00:15:53 -0400
commit095adbb6441172985f5ddc3b9e88cb3191bdeac4 (patch)
tree60c21d962efe921e98f308e2d40edf5260fe57c1 /drivers/acpi
parentf3946fb6e50b750d34f445188fa6746d14596afa (diff)
downloadlinux-linaro-stable-095adbb6441172985f5ddc3b9e88cb3191bdeac4.tar.gz
ACPI: Only count valid srat memory structures
Otherwise you could run into: WARN_ON in numa_register_memblks(), because node_possible_map is zero References: https://bugzilla.novell.com/show_bug.cgi?id=757888 On this machine (ProLiant ML570 G3) the SRAT table contains: - No processor affinities - One memory affinity structure (which is set disabled) CC: Per Jessen <per@opensuse.org> CC: Andi Kleen <andi@firstfloor.org> Signed-off-by: Thomas Renninger <trenn@suse.de> Signed-off-by: Len Brown <len.brown@intel.com>
Diffstat (limited to 'drivers/acpi')
-rw-r--r--drivers/acpi/numa.c8
1 files changed, 5 insertions, 3 deletions
diff --git a/drivers/acpi/numa.c b/drivers/acpi/numa.c
index 2a6399345c85..cb31298ca684 100644
--- a/drivers/acpi/numa.c
+++ b/drivers/acpi/numa.c
@@ -237,6 +237,8 @@ acpi_parse_processor_affinity(struct acpi_subtable_header *header,
return 0;
}
+static int __initdata parsed_numa_memblks;
+
static int __init
acpi_parse_memory_affinity(struct acpi_subtable_header * header,
const unsigned long end)
@@ -250,8 +252,8 @@ acpi_parse_memory_affinity(struct acpi_subtable_header * header,
acpi_table_print_srat_entry(header);
/* let architecture-dependent part to do it */
- acpi_numa_memory_affinity_init(memory_affinity);
-
+ if (!acpi_numa_memory_affinity_init(memory_affinity))
+ parsed_numa_memblks++;
return 0;
}
@@ -306,7 +308,7 @@ int __init acpi_numa_init(void)
if (cnt < 0)
return cnt;
- else if (cnt == 0)
+ else if (!parsed_numa_memblks)
return -ENOENT;
return 0;
}