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| author | Nicolas Pitre <nicolas.pitre@linaro.org> | 2011-09-20 14:46:13 -0400 |
|---|---|---|
| committer | Nicolas Pitre <nicolas.pitre@linaro.org> | 2011-09-20 14:46:13 -0400 |
| commit | 78ba6223a14eac73a1fbfc35bd456348171bffc6 (patch) | |
| tree | db50b17e03f3772443798415654c873d769a54ec /arch/x86/xen/mmu.c | |
| parent | f392cbf75615e9d8cb90ef5ffb8d4e752b7be3c7 (diff) | |
| parent | 04aa37b5f943920017ad094e776cd5514b1a9246 (diff) | |
Merge commit 'v3.0.4' into linaro-3.0linux-linaro-3.0-2011.09-0
Diffstat (limited to 'arch/x86/xen/mmu.c')
| -rw-r--r-- | arch/x86/xen/mmu.c | 12 |
1 files changed, 8 insertions, 4 deletions
diff --git a/arch/x86/xen/mmu.c b/arch/x86/xen/mmu.c index 0ccccb67a99..5f76c0acb2c 100644 --- a/arch/x86/xen/mmu.c +++ b/arch/x86/xen/mmu.c @@ -1626,15 +1626,19 @@ 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 |