From 93ef70a217637ade3f335303a112b22a134a1ec2 Mon Sep 17 00:00:00 2001
From: Andi Kleen <ak@suse.de>
Date: Mon, 16 May 2005 21:53:24 -0700
Subject: [PATCH] [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>
---
arch/x86_64/mm/ioremap.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/x86_64/mm/ioremap.c b/arch/x86_64/mm/ioremap.c
index 74ec8554b195d..c6fb0cb69992b 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();
--
GitLab