From bdd3cee2e4b7279457139058615ced6c2b41e7de Mon Sep 17 00:00:00 2001 From: Ingo Molnar Date: Thu, 28 Feb 2008 14:10:49 +0100 Subject: [PATCH] x86: ioremap(), extend check to all RAM pages Suggested by Jan Beulich. Signed-off-by: Ingo Molnar Acked-by: Jan Beulich --- arch/x86/mm/ioremap.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/arch/x86/mm/ioremap.c b/arch/x86/mm/ioremap.c index 17f518839028..e5608d380176 100644 --- a/arch/x86/mm/ioremap.c +++ b/arch/x86/mm/ioremap.c @@ -146,8 +146,9 @@ static void __iomem *__ioremap(resource_size_t phys_addr, unsigned long size, /* * Don't allow anybody to remap normal RAM that we're using.. */ - for (pfn = phys_addr >> PAGE_SHIFT; pfn < max_pfn_mapped && - (pfn << PAGE_SHIFT) < last_addr; pfn++) { + for (pfn = phys_addr >> PAGE_SHIFT; + (pfn << PAGE_SHIFT) < last_addr; pfn++) { + if (page_is_ram(pfn) && pfn_valid(pfn) && !PageReserved(pfn_to_page(pfn))) return NULL; -- 2.20.1