From: Andi Kleen Date: Tue, 17 May 2005 04:53:24 +0000 (-0700) Subject: [PATCH] x86_64: Don't look up struct page pointer of physical address in iounmap X-Git-Tag: v3.12-rc1~43151^2~249 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=93ef70a217637ade3f335303a112b22a134a1ec2;p=kernel%2Fkernel-generic.git [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 Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- diff --git a/arch/x86_64/mm/ioremap.c b/arch/x86_64/mm/ioremap.c index 74ec855..c6fb0cb 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();