diff options
| author | Lai Jiangshan | 2020-05-29 23:27:32 +0200 |
|---|---|---|
| committer | Thomas Gleixner | 2020-06-11 15:15:21 +0200 |
| commit | fdef24dfccb7be06e6ebe11d6c6c56987421870f (patch) | |
| tree | 1f3f6923203775c98c9c1913676e0f8f4afb5d89 /kernel | |
| parent | f9fe0b89f05441c6e4034e024c2c75a0d93024c1 (diff) | |
x86/hw_breakpoint: Prevent data breakpoints on user_pcid_flush_mask
The per-CPU user_pcid_flush_mask is used in the low level entry code. A
data breakpoint can cause #DB recursion.
Protect the full cpu_tlbstate structure for simplicity.
Signed-off-by: Lai Jiangshan <laijs@linux.alibaba.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lkml.kernel.org/r/20200526014221.2119-5-laijs@linux.alibaba.com
Link: https://lkml.kernel.org/r/20200529213320.955117574@infradead.org
Diffstat (limited to 'kernel')
0 files changed, 0 insertions, 0 deletions