Messages in this thread | | | Date | Fri, 4 Oct 2002 23:47:06 +0100 | From | Jamie Lokier <> | Subject | Re: [patch] 'sticky pages' support in the VM, futex-2.5.38-C5 |
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Ingo Molnar wrote: > futexes were not really designed with COW in mind - they were designed > to be used in non-COW shared memory. This is a very bad limitation
I thought that futex-based locks were only reliable with PROT_SEM memory, for architectures that define PROT_SEM (e.g. PPC) -- because of the need for locking primitives to work in a cache coherent manner.
Is this not so?
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