Searched hist:fdef24dfccb7be06e6ebe11d6c6c56987421870f (Results 1 – 1 of 1) sorted by relevance
| /linux/arch/x86/kernel/ |
| H A D | hw_breakpoint.c | diff fdef24dfccb7be06e6ebe11d6c6c56987421870f Fri May 29 23:27:32 CEST 2020 Lai Jiangshan <laijs@linux.alibaba.com> 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
|