> > caching flag. (which will be written into the page table entry). Is there
> > any RL use for the PWT bit?
>
> PCI video frame buffers when the BIOS isnt bright enought to set it. Also
> the PentiumPro/PentiumII MSRR's to enable write gathering on it
>
Asus' Award bios docs mention that enabling write-combining might crash
the 'puter... Is enabling write combining supported under Linux? ;)
(don't exactly want to set "dangerous" options in bios... 'due cmos
changes might be one-way only in some situations...)
[any other stuff I should know about ppro's under Linux?]