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SubjectRe: 4level page tables for Linux
On Wed, 13 Oct 2004 20:41:53 +0200
Andrea Arcangeli <> wrote:

> after you add the 4level, locking will become necessary for the pgd, but
> it's still not needed for the pml4.

Yes, agreed. I did an audit of the generic code and it seems to be ok
regarding the pgd use.

> peraphs we could consider pgd4 instead of pml4. What does "pml" stands
> for?

page mapping level 4 (?) just guessing here.

PML4 is the name AMD and Intel use in their documentation. I don't see
a particular reason to be different from them.

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