diff options
| -rw-r--r-- | arch/i386/mm/highmem.c | 18 |
1 files changed, 8 insertions, 10 deletions
diff --git a/arch/i386/mm/highmem.c b/arch/i386/mm/highmem.c index 178bbfe6cbac..e0fa6cb655a8 100644 --- a/arch/i386/mm/highmem.c +++ b/arch/i386/mm/highmem.c @@ -50,22 +50,20 @@ void kunmap_atomic(void *kvaddr, enum km_type type) unsigned long vaddr = (unsigned long) kvaddr & PAGE_MASK; enum fixed_addresses idx = type + KM_TYPE_NR*smp_processor_id(); -#ifdef CONFIG_DEBUG_HIGHMEM - if (vaddr >= PAGE_OFFSET && vaddr < (unsigned long)high_memory) { - pagefault_enable(); - return; - } - - if (vaddr != __fix_to_virt(FIX_KMAP_BEGIN+idx)) - BUG(); -#endif /* * Force other mappings to Oops if they'll try to access this pte * without first remap it. Keeping stale mappings around is a bad idea * also, in case the page changes cacheability attributes or becomes * a protected page in a hypervisor. */ - kpte_clear_flush(kmap_pte-idx, vaddr); + if (vaddr == __fix_to_virt(FIX_KMAP_BEGIN+idx)) + kpte_clear_flush(kmap_pte-idx, vaddr); + else { +#ifdef CONFIG_DEBUG_HIGHMEM + BUG_ON(vaddr < PAGE_OFFSET); + BUG_ON(vaddr >= (unsigned long)high_memory); +#endif + } pagefault_enable(); } |