diff options
| -rw-r--r-- | arch/x86/mm/iomap_32.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/x86/mm/iomap_32.c b/arch/x86/mm/iomap_32.c index 0c953e3..62377d6 100644 --- a/arch/x86/mm/iomap_32.c +++ b/arch/x86/mm/iomap_32.c @@ -65,6 +65,8 @@ void *kmap_atomic_prot_pfn(unsigned long pfn, pgprot_t prot) type = kmap_atomic_idx_push(); idx = type + KM_TYPE_NR * smp_processor_id(); vaddr = __fix_to_virt(FIX_KMAP_BEGIN + idx); + WARN_ON(!pte_none(*(kmap_pte - idx))); + #ifdef CONFIG_PREEMPT_RT_FULL current->kmap_pte[type] = pte; #endif |