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-rw-r--r--arch/x86/mm/amdtopology_64.c9
-rw-r--r--arch/x86/mm/numa_64.c18
-rw-r--r--arch/x86/mm/srat_64.c22
3 files changed, 22 insertions, 27 deletions
diff --git a/arch/x86/mm/amdtopology_64.c b/arch/x86/mm/amdtopology_64.c
index eb5cbb97b68d..0df2623d1039 100644
--- a/arch/x86/mm/amdtopology_64.c
+++ b/arch/x86/mm/amdtopology_64.c
@@ -187,17 +187,14 @@ static s16 fake_apicid_to_node[MAX_LOCAL_APIC] __initdata = {
[0 ... MAX_LOCAL_APIC-1] = NUMA_NO_NODE
};
-int __init amd_get_nodes(struct bootnode *physnodes)
+void __init amd_get_nodes(struct bootnode *physnodes)
{
int i;
- int ret = 0;
for_each_node_mask(i, nodes_parsed) {
- physnodes[ret].start = nodes[i].start;
- physnodes[ret].end = nodes[i].end;
- ret++;
+ physnodes[i].start = nodes[i].start;
+ physnodes[i].end = nodes[i].end;
}
- return ret;
}
static int __init find_node_by_addr(unsigned long addr)
diff --git a/arch/x86/mm/numa_64.c b/arch/x86/mm/numa_64.c
index dd300c491f1f..3d73201ba347 100644
--- a/arch/x86/mm/numa_64.c
+++ b/arch/x86/mm/numa_64.c
@@ -266,25 +266,24 @@ static char *cmdline __initdata;
static int __init setup_physnodes(unsigned long start, unsigned long end,
int acpi, int amd)
{
- int nr_nodes = 0;
int ret = 0;
int i;
memset(physnodes, 0, sizeof(physnodes));
#ifdef CONFIG_ACPI_NUMA
if (acpi)
- nr_nodes = acpi_get_nodes(physnodes);
+ acpi_get_nodes(physnodes, start, end);
#endif
#ifdef CONFIG_AMD_NUMA
if (amd)
- nr_nodes = amd_get_nodes(physnodes);
+ amd_get_nodes(physnodes);
#endif
/*
* Basic sanity checking on the physical node map: there may be errors
* if the SRAT or AMD code incorrectly reported the topology or the mem=
* kernel parameter is used.
*/
- for (i = 0; i < nr_nodes; i++) {
+ for (i = 0; i < MAX_NUMNODES; i++) {
if (physnodes[i].start == physnodes[i].end)
continue;
if (physnodes[i].start > end) {
@@ -299,17 +298,6 @@ static int __init setup_physnodes(unsigned long start, unsigned long end,
physnodes[i].start = start;
if (physnodes[i].end > end)
physnodes[i].end = end;
- }
-
- /*
- * Remove all nodes that have no memory or were truncated because of the
- * limited address range.
- */
- for (i = 0; i < nr_nodes; i++) {
- if (physnodes[i].start == physnodes[i].end)
- continue;
- physnodes[ret].start = physnodes[i].start;
- physnodes[ret].end = physnodes[i].end;
ret++;
}
diff --git a/arch/x86/mm/srat_64.c b/arch/x86/mm/srat_64.c
index c48b443706c5..a756bcf3fa48 100644
--- a/arch/x86/mm/srat_64.c
+++ b/arch/x86/mm/srat_64.c
@@ -340,17 +340,16 @@ static int __init nodes_cover_memory(const struct bootnode *nodes)
void __init acpi_numa_arch_fixup(void) {}
#ifdef CONFIG_NUMA_EMU
-int __init acpi_get_nodes(struct bootnode *physnodes)
+void __init acpi_get_nodes(struct bootnode *physnodes, unsigned long start,
+ unsigned long end)
{
int i;
- int ret = 0;
for_each_node_mask(i, nodes_parsed) {
- physnodes[ret].start = nodes[i].start;
- physnodes[ret].end = nodes[i].end;
- ret++;
+ cutoff_node(i, start, end);
+ physnodes[i].start = nodes[i].start;
+ physnodes[i].end = nodes[i].end;
}
- return ret;
}
#endif /* CONFIG_NUMA_EMU */
@@ -516,6 +515,17 @@ void __init acpi_fake_nodes(const struct bootnode *fake_nodes, int num_nodes)
fake_apicid_to_node[j] == NUMA_NO_NODE)
fake_apicid_to_node[j] = i;
}
+
+ /*
+ * If there are apicid-to-node mappings for physical nodes that do not
+ * have a corresponding emulated node, it should default to a guaranteed
+ * value.
+ */
+ for (i = 0; i < MAX_LOCAL_APIC; i++)
+ if (apicid_to_node[i] != NUMA_NO_NODE &&
+ fake_apicid_to_node[i] == NUMA_NO_NODE)
+ fake_apicid_to_node[i] = 0;
+
for (i = 0; i < num_nodes; i++)
__acpi_map_pxm_to_node(fake_node_to_pxm_map[i], i);
memcpy(apicid_to_node, fake_apicid_to_node, sizeof(apicid_to_node));