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-rw-r--r--arch/x86/mm/numa_32.c35
1 files changed, 35 insertions, 0 deletions
diff --git a/arch/x86/mm/numa_32.c b/arch/x86/mm/numa_32.c
index 847c164725f4..8518c678d83f 100644
--- a/arch/x86/mm/numa_32.c
+++ b/arch/x86/mm/numa_32.c
@@ -222,6 +222,41 @@ static void __init remap_numa_kva(void)
}
}
+#ifdef CONFIG_HIBERNATION
+/**
+ * resume_map_numa_kva - add KVA mapping to the temporary page tables created
+ * during resume from hibernation
+ * @pgd_base - temporary resume page directory
+ */
+void resume_map_numa_kva(pgd_t *pgd_base)
+{
+ int node;
+
+ for_each_online_node(node) {
+ unsigned long start_va, start_pfn, size, pfn;
+
+ start_va = (unsigned long)node_remap_start_vaddr[node];
+ start_pfn = node_remap_start_pfn[node];
+ size = node_remap_size[node];
+
+ printk(KERN_DEBUG "%s: node %d\n", __FUNCTION__, node);
+
+ for (pfn = 0; pfn < size; pfn += PTRS_PER_PTE) {
+ unsigned long vaddr = start_va + (pfn << PAGE_SHIFT);
+ pgd_t *pgd = pgd_base + pgd_index(vaddr);
+ pud_t *pud = pud_offset(pgd, vaddr);
+ pmd_t *pmd = pmd_offset(pud, vaddr);
+
+ set_pmd(pmd, pfn_pmd(start_pfn + pfn,
+ PAGE_KERNEL_LARGE_EXEC));
+
+ printk(KERN_DEBUG "%s: %08lx -> pfn %08lx\n",
+ __FUNCTION__, vaddr, start_pfn + pfn);
+ }
+ }
+}
+#endif
+
static unsigned long calculate_numa_remap_pages(void)
{
int nid;