Messages in this thread | | | From | Andy Lutomirski <> | Date | Sun, 23 Aug 2020 16:11:18 -0700 | Subject | Re: [PATCH v2 8/8] x86/debug: Remove the historical junk |
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On Fri, Aug 21, 2020 at 3:21 AM Peter Zijlstra <peterz@infradead.org> wrote: > > Remove the historical junk and replace it with a WARN and a comment. > > The problem is that even though the kernel only uses TF single-step in > kprobes and KGDB, both of which consume the event before this, > QEMU/KVM has bugs in this area that can trigger this state so we have > to deal with it.
Almost acked by me.
If you make the change I suggested earlier, then the ->debugreg6 garbage can actually die.
--Andy
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