Re: Why are the PAGE_SIZE and the physical page frame size different in x86_64 kernel?

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> Each entry in a PMD table covers 2M - and either describes a 2M
> hugepage, or is a pointer to a table of PTE entries, each of which describes a
> 4K page.
Many Thanks! This explanation helps me a lot. I didn't know 4KB and
2MB page frames can exist at the same time:)

Regards,
Hao Lee

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