Commit c2f71ee2 authored by Andi Kleen's avatar Andi Kleen Committed by Ingo Molnar
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x86: add gbpages support to lookup_address 



[ tglx@linutronix.de: fix bootup crash on sparse mappings. ]

Signed-off-by: default avatarAndi Kleen <ak@suse.de>
Signed-off-by: default avatarIngo Molnar <mingo@elte.hu>
Signed-off-by: default avatarThomas Gleixner <tglx@linutronix.de>
parent 61e19a34

arch/x86/mm/pageattr.c

+5 −0
Original line number Diff line number Diff line
@@ -209,6 +209,11 @@ pte_t *lookup_address(unsigned long address, int *level) 
	pud = pud_offset(pgd, address);

	if (pud_none(*pud))

		return NULL;



	*level = PG_LEVEL_1G;

	if (pud_large(*pud) || !pud_present(*pud))

		return (pte_t *)pud;



	pmd = pmd_offset(pud, address);

	if (pmd_none(*pmd))

		return NULL;