diff options
Diffstat (limited to 'arch/x86/mm/fault_64.c')
| -rw-r--r-- | arch/x86/mm/fault_64.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/arch/x86/mm/fault_64.c b/arch/x86/mm/fault_64.c index 9ef0306efe9..2d9e6da2cb3 100644 --- a/arch/x86/mm/fault_64.c +++ b/arch/x86/mm/fault_64.c @@ -514,6 +514,17 @@ good_area: tsk->maj_flt++; else tsk->min_flt++; + +#ifdef CONFIG_X86_32 + /* + * Did it hit the DOS screen memory VA from vm86 mode? + */ + if (v8086_mode(regs)) { + unsigned long bit = (address - 0xA0000) >> PAGE_SHIFT; + if (bit < 32) + tsk->thread.screen_bitmap |= 1 << bit; + } +#endif up_read(&mm->mmap_sem); return; |