Re: [PATCH] ppc64: Fix possible race with set_pte on a present PTE

Andrea Arcangeli
2004-05-25T05:09:37Z

> all. However I wonder what happens for PROT_WRITE? How can you make a

I understood now how it works with PROT_WRITE too, it's not FOR but URE
being tweaked together with ACCESSED. This has been a very big misread I
did when I was doing alpha stuff some year ago. that's why I was so
confident it was only setting it during the first page fault and never
clearing it again. Sounds good that it can be emulated fully, I thought
it wasn't even feasible at all.

thanks a lot for pointing out this huge mistake.