diff options
| author | Peter Zijlstra <peterz@infradead.org> | 2020-05-30 00:27:34 +0300 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2020-06-11 16:15:22 +0300 |
| commit | fd338e3564b0b8597a89f83941a0eda3e5092cc0 (patch) | |
| tree | 0e6b3615b536ef76b4d4e0eb0f2385967cee8cb2 /tools/perf/scripts/python/export-to-postgresql.py | |
| parent | e1de11d4d1a64ac1b90b9833f1a3629dae18facb (diff) | |
| download | linux-fd338e3564b0b8597a89f83941a0eda3e5092cc0.tar.xz | |
x86/entry, nmi: Disable #DB
Instead of playing stupid games with IST stacks, fully disallow #DB
during NMIs. There is absolutely no reason to allow them, and killing
this saves a heap of trouble.
#DB is already forbidden on noinstr and CEA, so there can't be a #DB before
this. Disabling it right after nmi_enter() ensures that the full NMI code
is protected.
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lkml.kernel.org/r/20200529213321.069223695@infradead.org
Diffstat (limited to 'tools/perf/scripts/python/export-to-postgresql.py')
0 files changed, 0 insertions, 0 deletions