diff options
| author | Andy Lutomirski <luto@kernel.org> | 2016-03-09 19:00:28 -0800 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2016-03-10 09:48:13 +0100 |
| commit | 81edd9f69a6fd214fdbe66b43de6aa1610c84c63 (patch) | |
| tree | c93d1ac792c7864ff0836b159e69f30c5032bf17 /tools/perf/scripts/python/syscall-counts.py | |
| parent | c2c9b52fab0d0cf993476ed4c34f24da5a1205ae (diff) | |
x86/entry/traps: Clear TIF_BLOCKSTEP on all debug exceptions
The SDM says that debug exceptions clear BTF, and we need to keep
TIF_BLOCKSTEP in sync with BTF. Clear it unconditionally and improve
the comment.
I suspect that the fact that kmemcheck could cause TIF_BLOCKSTEP not
to be cleared was just an oversight.
Signed-off-by: Andy Lutomirski <luto@kernel.org>
Cc: Andrew Cooper <andrew.cooper3@citrix.com>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/fa86e55d196e6dde5b38839595bde2a292c52fdc.1457578375.git.luto@kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'tools/perf/scripts/python/syscall-counts.py')
0 files changed, 0 insertions, 0 deletions