Re: [PATCH] generic signal code (small new feature - userspace signal mask), kernel 2.6.16

[Andi Kleen]

Linus Torvalds <torvalds@xxxxxxxx> writes:
> 
> Why? You're doing user-space accesses from within critical sections with a 
> spinlock, and that's just a big no-no. Think page faults, swapping etc.

He could pin the page in memory like futexes do. One page pinned
per thread shouldn't be a big DOS issue either.

-Andi
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