Commit-ID: 28468050e2f5410c04fd737c922f2bea73ddd690 Gitweb: http://git.kernel.org/tip/28468050e2f5410c04fd737c922f2bea73ddd690 Author: Jack Steiner <steiner@xxxxxxx> AuthorDate: Fri, 17 Apr 2009 09:22:42 -0500 Committer: Ingo Molnar <mingo@xxxxxxx> CommitDate: Fri, 17 Apr 2009 16:45:29 +0200 x86/uv: fix init of memory-less nodes Add support for nodes that have cpus but no memory. The current code was failing to add these nodes to the nodes_present_map. [ Impact: fix potential boot crash on memory-less UV nodes. ] Signed-off-by: Jack Steiner <steiner@xxxxxxx> LKML-Reference: <20090417142242.GA23743@xxxxxxx> Signed-off-by: Ingo Molnar <mingo@xxxxxxx> --- arch/x86/mm/srat_64.c | 5 ++++- 1 files changed, 4 insertions(+), 1 deletions(-) diff --git a/arch/x86/mm/srat_64.c b/arch/x86/mm/srat_64.c index c7d272b..1619026 100644 --- a/arch/x86/mm/srat_64.c +++ b/arch/x86/mm/srat_64.c @@ -28,6 +28,7 @@ int acpi_numa __initdata; static struct acpi_table_slit *acpi_slit; static nodemask_t nodes_parsed __initdata; +static nodemask_t cpu_nodes_parsed __initdata; static struct bootnode nodes[MAX_NUMNODES] __initdata; static struct bootnode nodes_add[MAX_NUMNODES]; static int found_add_area __initdata; @@ -174,6 +175,7 @@ acpi_numa_processor_affinity_init(struct acpi_srat_cpu_affinity *pa) else apic_id = pa->apic_id; apicid_to_node[apic_id] = node; + node_set(node, cpu_nodes_parsed); acpi_numa = 1; printk(KERN_INFO "SRAT: PXM %u -> APIC %u -> Node %u\n", pxm, apic_id, node); @@ -402,7 +404,8 @@ int __init acpi_scan_nodes(unsigned long start, unsigned long end) return -1; } - node_possible_map = nodes_parsed; + /* Account for nodes with cpus and no memory */ + nodes_or(node_possible_map, nodes_parsed, cpu_nodes_parsed); /* Finally register nodes */ for_each_node_mask(i, node_possible_map) -- To unsubscribe from this list: send the line "unsubscribe linux-tip-commits" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html