Messages in this thread | | | Date | Fri, 24 Jul 2015 17:33:57 +0200 | From | Willy Tarreau <> | Subject | Re: Dealing with the NMI mess |
| |
On Fri, Jul 24, 2015 at 05:30:54PM +0200, Peter Zijlstra wrote: > On Fri, Jul 24, 2015 at 05:26:37PM +0200, Willy Tarreau wrote: > > > > > > The point is, if we trigger a #DB on an instruction breakpoint > > > while !IF, then we simply disable that breakpoint and do the RET. > > > > Yes but the breakpoint remains disabled then. Or I'm missing > > something. > > http://marc.info/?l=linux-kernel&m=143773601130974 > > We re-enable before going back to userspace.
Ah OK thanks Peter. I'm sorry if I'm adding more noise than anything here, it's hard to follow and it becomes a bit complex.
Willy
| |