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H A D | hw_breakpoint.c | 97417cb9 Fri May 29 16:27:30 CDT 2020 Lai Jiangshan <laijs@linux.alibaba.com> x86/hw_breakpoint: Prevent data breakpoints on direct GDT
A data breakpoint on the GDT can be fatal and must be avoided. The GDT in the CPU entry area is already protected, but not the direct GDT.
Add the necessary protection.
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/20200526014221.2119-3-laijs@linux.alibaba.com Link: https://lkml.kernel.org/r/20200529213320.840953950@infradead.org 97417cb9 Fri May 29 16:27:30 CDT 2020 Lai Jiangshan <laijs@linux.alibaba.com> x86/hw_breakpoint: Prevent data breakpoints on direct GDT A data breakpoint on the GDT can be fatal and must be avoided. The GDT in the CPU entry area is already protected, but not the direct GDT. Add the necessary protection. 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/20200526014221.2119-3-laijs@linux.alibaba.com Link: https://lkml.kernel.org/r/20200529213320.840953950@infradead.org
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