Re: set_pte() is no longer atomic with PAE36.
Alan Cox (alan@lxorguk.ukuu.org.uk)
Thu, 2 Dec 1999 14:42:45 +0000 (GMT)
> Modifying an existing pte (eg. for COW) is probably even harder: do we
> need to clear the page-present bit while we modify the high word?
> Simply setting the dirty or accessed bits should pose no such problem,
> but relocating a page looks as if it could bite here.
You can do 64bit atomic sets with lock cmpxchg8. It might just be slow though
>
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