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| author | Brian Gerst <brgerst@gmail.com> | 2015-07-29 07:41:16 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2015-07-31 13:31:07 +0200 |
| commit | 9fda6a0681e070b496235b132bc70ceb80300211 (patch) | |
| tree | a416276cb23718f38a897884abd75c6790b590d7 /arch/x86/mm/fault.c | |
| parent | selftests/x86/vm86: Fix entry_from_vm86 test on 64-bit kernels (diff) | |
| download | linux-9fda6a0681e070b496235b132bc70ceb80300211.tar.xz linux-9fda6a0681e070b496235b132bc70ceb80300211.zip | |
x86/vm86: Move vm86 fields out of 'thread_struct'
Allocate a separate structure for the vm86 fields.
Signed-off-by: Brian Gerst <brgerst@gmail.com>
Acked-by: Andy Lutomirski <luto@kernel.org>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/1438148483-11932-2-git-send-email-brgerst@gmail.com
[ Build fixes. ]
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'arch/x86/mm/fault.c')
| -rw-r--r-- | arch/x86/mm/fault.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/arch/x86/mm/fault.c b/arch/x86/mm/fault.c index 9dc909841739..34a368d2d533 100644 --- a/arch/x86/mm/fault.c +++ b/arch/x86/mm/fault.c @@ -301,14 +301,16 @@ static inline void check_v8086_mode(struct pt_regs *regs, unsigned long address, struct task_struct *tsk) { +#ifdef CONFIG_VM86 unsigned long bit; - if (!v8086_mode(regs)) + if (!v8086_mode(regs) || !tsk->thread.vm86) return; bit = (address - 0xA0000) >> PAGE_SHIFT; if (bit < 32) - tsk->thread.screen_bitmap |= 1 << bit; + tsk->thread.vm86->screen_bitmap |= 1 << bit; +#endif } static bool low_pfn(unsigned long pfn) |