Re: [PATCH] paravirt.h

From: Andi Kleen
Date: Tue Aug 22 2006 - 16:14:54 EST

Zachary Amsden <zach@xxxxxxxxxx> writes:
> That is a really nasty problem. You need a synchronization primitive
> which guarantees a flat stack, so you can't do it in the interrupt
> handler as I have tried to do. I'll bang my head on it awhile. In
> the meantime, were there ever any solutions to the syscall patching
> problem that might lend me a clue as to what to do (or not to do, or
> impossible?).

stop_machine_run() solves the problem I think. It is currently not
exported though. I don't think there's anything in there that couldn't
be reimplemented in a module, but then we could also just export it
if there's a useful user.

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