Messages in this thread | | | Date | Tue, 26 Jan 2010 15:37:49 -0800 (PST) | From | Linus Torvalds <> | Subject | Re: linux-next: add utrace tree |
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On Tue, 26 Jan 2010, Tom Tromey wrote: > > In non-stop mode (where you can stop one thread but leave the others > running), gdb wants to have the breakpoints always inserted. So, > something must emulate the displaced instruction.
I'm almost totally uninterested in breakpoints that actually re-write instructions. It's impossible to do that efficiently and well, especially in threaded environments.
So if you do instruction rewriting, I can only say "that's your problem".
But using the hardware breakpoints should automatically DTRT, both wrt threads _and_ wrt restarting. Sure, there's onyl a limited number of them, so if somebody wants more than that they are kind of screwed, but that's just how life is.
Linus
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