diff options
| author | Alex Elder <aelder@sgi.com> | 2011-08-08 07:06:24 -0500 |
|---|---|---|
| committer | Alex Elder <aelder@sgi.com> | 2011-08-08 07:06:24 -0500 |
| commit | 2ddb4e94065470828e131351566102274ea9e83f (patch) | |
| tree | 3eb237d28e10d7735d57c051880e8173113acef8 /arch/x86/mm/numa.c | |
| parent | c35a549c8b9e85bdff7e531a410d10e36b4b4f32 (diff) | |
| parent | 322a8b034003c0d46d39af85bf24fee27b902f48 (diff) | |
Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux
Diffstat (limited to 'arch/x86/mm/numa.c')
| -rw-r--r-- | arch/x86/mm/numa.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/arch/x86/mm/numa.c b/arch/x86/mm/numa.c index f5510d889a22..fbeaaf416610 100644 --- a/arch/x86/mm/numa.c +++ b/arch/x86/mm/numa.c @@ -496,6 +496,7 @@ static bool __init numa_meminfo_cover_memory(const struct numa_meminfo *mi) static int __init numa_register_memblks(struct numa_meminfo *mi) { + unsigned long uninitialized_var(pfn_align); int i, nid; /* Account for nodes with cpus and no memory */ @@ -511,6 +512,20 @@ static int __init numa_register_memblks(struct numa_meminfo *mi) /* for out of order entries */ sort_node_map(); + + /* + * If sections array is gonna be used for pfn -> nid mapping, check + * whether its granularity is fine enough. + */ +#ifdef NODE_NOT_IN_PAGE_FLAGS + pfn_align = node_map_pfn_alignment(); + if (pfn_align && pfn_align < PAGES_PER_SECTION) { + printk(KERN_WARNING "Node alignment %LuMB < min %LuMB, rejecting NUMA config\n", + PFN_PHYS(pfn_align) >> 20, + PFN_PHYS(PAGES_PER_SECTION) >> 20); + return -EINVAL; + } +#endif if (!numa_meminfo_cover_memory(mi)) return -EINVAL; |