From 361716975a00f9fd58ea619fd891b51096d38981 Mon Sep 17 00:00:00 2001 From: Andi Kleen Date: Tue, 17 May 2005 04:53:24 +0000 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. Back port to -stable tree by Chris Wright Signed-off-by: Andi Kleen Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds Signed-off-by: Chris Wright --- 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 911262d8ca199..bae79b818d851 100644 --- a/arch/x86_64/mm/ioremap.c +++ b/arch/x86_64/mm/ioremap.c @@ -266,7 +266,7 @@ 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_SIZE) >> PAGE_SHIFT, PAGE_KERNEL); global_flush_tlb(); -- 2.47.2