Merge branches 'imx/pata' and 'imx/sata' into next/driver

[pandora-kernel.git] / arch / x86 / xen / mmu.c

diff --git a/arch/x86/xen/mmu.c b/arch/x86/xen/mmu.c
index 8cce339..20a6142 100644 (file)
--- a/arch/x86/xen/mmu.c
+++ b/arch/x86/xen/mmu.c
@@ -1713,15 +1713,19 @@ static void __init xen_map_identity_early(pmd_t *pmd, unsigned long max_pfn)
 void __init xen_setup_machphys_mapping(void)
 {
        struct xen_machphys_mapping mapping;
-       unsigned long machine_to_phys_nr_ents;
 
        if (HYPERVISOR_memory_op(XENMEM_machphys_mapping, &mapping) == 0) {
                machine_to_phys_mapping = (unsigned long *)mapping.v_start;
-               machine_to_phys_nr_ents = mapping.max_mfn + 1;
+               machine_to_phys_nr = mapping.max_mfn + 1;
        } else {
-               machine_to_phys_nr_ents = MACH2PHYS_NR_ENTRIES;
+               machine_to_phys_nr = MACH2PHYS_NR_ENTRIES;
        }
-       machine_to_phys_order = fls(machine_to_phys_nr_ents - 1);
+#ifdef CONFIG_X86_32
+       if ((machine_to_phys_mapping + machine_to_phys_nr)
+           < machine_to_phys_mapping)
+               machine_to_phys_nr = (unsigned long *)NULL
+                                    - machine_to_phys_mapping;
+#endif
 }
 
 #ifdef CONFIG_X86_64