[PATCH] x86_64: Don't look up struct page pointer of physical address in iounmap

It could be in a memory hole not mapped in mem_map and that causes the hash
lookup to go off to nirvana.

Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 1 insertions, 1 deletions

diff --git a/arch/x86_64/mm/ioremap.c b/arch/x86_64/mm/ioremap.c
index 74ec8554b195..c6fb0cb69992 100644
--- a/arch/x86_64/mm/ioremap.c
+++ b/arch/x86_64/mm/ioremap.c
@@ -272,7 +272,7 @@ void iounmap(volatile void __iomem *addr)
         if ((p->flags >> 20) &&
                 p->phys_addr + p->size - 1 < virt_to_phys(high_memory)) {
                 /* p->size includes the guard page, but cpa doesn't like that */
-                change_page_attr(virt_to_page(__va(p->phys_addr)),
+                change_page_attr_addr((unsigned long)__va(p->phys_addr),
                                  p->size >> PAGE_SHIFT,
                                  PAGE_KERNEL);
                 global_flush_tlb();