| commit | fdef24dfccb7be06e6ebe11d6c6c56987421870f | [log] [tgz] |
|---|---|---|
| author | Lai Jiangshan <laijs@linux.alibaba.com> | Fri May 29 23:27:32 2020 +0200 |
| committer | Thomas Gleixner <tglx@linutronix.de> | Thu Jun 11 15:15:21 2020 +0200 |
| tree | 1f3f6923203775c98c9c1913676e0f8f4afb5d89 | |
| 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