| From | Lai Jiangshan <> | Date | Sat, 9 May 2020 17:23:20 +0800 | Subject | Re: [patch V4 part 1 02/36] x86/hw_breakpoint: Prevent data breakpoints on cpu_entry_area |
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On Tue, May 5, 2020 at 10:15 PM Thomas Gleixner <tglx@linutronix.de> wrote: > > From: Andy Lutomirski <luto@kernel.org> > > A data breakpoint near the top of an IST stack will cause unresoverable > recursion. A data breakpoint on the GDT, IDT, or TSS is terrifying. > Prevent either of these from happening. >
What happen when a data breakpoint on the direct GDT (load_direct_gdt()) and the debug IDT (load_debug_idt()) which are not considered in this patch?
Thanks Lai
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