Re: [Qemu-devel] [PATCH 0/6] exec: Cleanup watchpoints

2019-08-28 Thread Richard Henderson
Ping for 5/6, as yet unreviewed. r~ On 8/24/19 2:34 PM, Richard Henderson wrote: > As discussed with David earlier this week, the current implementation > of watchpoints cannot work, at least reliably. We are raising an > exception out of the middle of the i/o access path which does not > even

[Qemu-devel] [PATCH 0/6] exec: Cleanup watchpoints

2019-08-24 Thread Richard Henderson
As discussed with David earlier this week, the current implementation of watchpoints cannot work, at least reliably. We are raising an exception out of the middle of the i/o access path which does not even attempt to unwind the guest cpu state, nor does it have the information required to do so.