Messages in this thread | | | From | Andy Lutomirski <> | Subject | Re: [RFC][PATCH 4/7] x86/debug: Move historical SYSENTER junk into exc_debug_kernel() | Date | Thu, 20 Aug 2020 09:43:15 -0700 |
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> On Aug 20, 2020, at 9:35 AM, peterz@infradead.org wrote: > > On Thu, Aug 20, 2020 at 11:17:29AM -0500, Josh Poimboeuf wrote: >> On Thu, Aug 20, 2020 at 05:21:11PM +0200, peterz@infradead.org wrote: > >>> qemu-gdb stub should eat the event before it lands in the guest >> >> Are we sure about that? I triggered the warning just now, stepping >> through the debug handler. > > Not sure at all, that's what seemed reasonable, but since when did that > stop virt ;-) > > Also, can you trigger that same with upstream? Because I suspect this > ought to tickle the old code too.
I’ve lost track of how many bugs QEMU and KVM have in this space. Let’s keep it as a warning, but a bug. But let’s get rid of the totally bogus TIF_SINGLESTEP manipulation.
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