Commit 94d2ac66 authored Jul 29, 2005 by Ravikiran G Thirumalai Committed by Linus Torvalds Jul 29, 2005

[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>

parent 590f47a1

arch/i386/mm/discontig.c

+8 −0

Original line number	Diff line number	Diff line
		@@ -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.