_PAGE_HWWRITE missing in pte_mkdirty()?
joakim.tjernlund at lumentis.se
Sat Apr 26 01:34:22 EST 2003
> Joakim Tjernlund wrote:
> > I noticed that pte_mkdirty() does not set the change bit(HWWRITE) when
> > dirtying a page. I think it should. Is there a reason why it doesn't?
> A dirty page doesn't necessarily indicate a write enabled page. Setting
> _PAGE_HWWRITE without _PAGE_RW is an error. On PPC, RW and DIRTY are
> software status bits, HWWRITE actually contols write access.
OK, I wasn't aware that you can have dirty pages without _PAGE_RW.
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