Merge git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6.git

[linux-2.6] / arch / x86 / mm / pat.c

diff --git a/arch/x86/mm/pat.c b/arch/x86/mm/pat.c
index a885a1019b8a6908f08e7481a5724daa5ecde273..d4585077977a0bd1c6c7234b09051d671851a6aa 100644 (file)
--- a/arch/x86/mm/pat.c
+++ b/arch/x86/mm/pat.c
@@ -449,7 +449,8 @@ int phys_mem_access_prot_allowed(struct file *file, unsigned long pfn,
        if (retval < 0)
                return 0;
 
-       if (pfn <= max_pfn_mapped &&
+       if (((pfn < max_low_pfn_mapped) ||
+            (pfn >= (1UL<<(32 - PAGE_SHIFT)) && pfn < max_pfn_mapped)) &&
            ioremap_change_attr((unsigned long)__va(offset), size, flags) < 0) {
                free_memtype(offset, offset + size);
                printk(KERN_INFO