Re: [edk2-devel] [PATCH v2 3/5] OvmfPkg/ResetVector: improve page table flag names

["Gerd Hoffmann" <kraxel@redhat.com>]

  Hi,

> > Technically, if we want to be pedantic, these are PDPTEs (or PDPs I
> > guess), so PDE is misleading here.
> 
> I remembered the fact that the SDM used different terms for different
> table levels, but honestly, I've never been able to keep all those in my
> mind for longer than 5 minutes. I recall them as fairly arbitrary.

The names made sense back in the 90-ies when we had only two or three
(with PAE) paging levels on x86.  Nowdays with up to 5 levels not so
much.  I likewise can't remember all the names, so I very much prefer
to work with level numbers.

The bits for the lowest level are slightly different from all levels
above, and I've used the level 1 + level 2 names (page table entry and
page directory entry) to name them.

take care,
  Gerd



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