Manfred Spraul wrote:
> Can we ignore the munmap+access case?
> I'd say that if 2 threads race with munmap+access, then the behaviour is
> undefined.
> Tlb flushes are expensive, I'd like to avoid the second tlb flush as in
> Kanoj's patch.
No, you can't ignore it. A variation called mprotect+access is used by
garbage collection systems that expect to receive SEGVs when access is
to a protected region.
At very least, you'd have to document the race very clearly, and provide
a workaround.
-- Jamie
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This archive was generated by hypermail 2b29 : Sat Apr 15 2000 - 21:00:18 EST