PTE_MAGNITUDE

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#define PTE_BITS (PTE_SHIFT - PTE_MAGNITUDE)

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#define PTRS_PER_PGD (PAGE_SIZE / (1 << PTE_MAGNITUDE))

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#define PMD_SHIFT (PAGE_SHIFT + (PAGE_SHIFT - PTE_MAGNITUDE))

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#define PTRS_PER_PTE (PAGE_SIZE / (1 << PTE_MAGNITUDE))

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PTRS_PER_PGD * (1<<PTE_MAGNITUDE),

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PTRS_PER_PMD * (1<<PTE_MAGNITUDE),