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authorRavikiran G Thirumalai <kiran@scalex86.org>2005-07-29 14:03:28 -0700
committerLinus Torvalds <torvalds@g5.osdl.org>2005-07-29 15:01:13 -0700
commit94d2ac66c12397e2ca7988dbf59f24a966d275cb (patch)
treec0d7b9f7654bb83da63a28b2609b03c442ca09f8
parent590f47a1d945c611530a85057e9ad7a3bbb50578 (diff)
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[PATCH] mm: Ensure proper alignment for node_remap_start_pfn
While reserving KVA for lmem_maps of node, we have to make sure that node_remap_start_pfn[] is aligned to a proper pmd boundary. (node_remap_start_pfn[] gets its value from node_end_pfn[]) Signed-off-by: Ravikiran Thirumalai <kiran@scalex86.org> Signed-off-by: Shai Fultheim <shai@scalex86.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
-rw-r--r--arch/i386/mm/discontig.c8
1 files changed, 8 insertions, 0 deletions
diff --git a/arch/i386/mm/discontig.c b/arch/i386/mm/discontig.c
index b358f07..c369a8b 100644
--- a/arch/i386/mm/discontig.c
+++ b/arch/i386/mm/discontig.c
@@ -243,6 +243,14 @@ static unsigned long calculate_numa_remap_pages(void)
/* now the roundup is correct, convert to PAGE_SIZE pages */
size = size * PTRS_PER_PTE;
+ if (node_end_pfn[nid] & (PTRS_PER_PTE-1)) {
+ /*
+ * Adjust size if node_end_pfn is not on a proper
+ * pmd boundary. remap_numa_kva will barf otherwise.
+ */
+ size += node_end_pfn[nid] & (PTRS_PER_PTE-1);
+ }
+
/*
* Validate the region we are allocating only contains valid
* pages.