Messages in this thread |  | | | Subject | Re: set_pte() is no longer atomic with PAE36. | | Date | Thu, 2 Dec 1999 14:42:45 +0000 (GMT) | | From | Alan Cox <> |
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> 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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