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Commit a8d623ee authored by Punit Agrawal's avatar Punit Agrawal Committed by Catalin Marinas
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arm64: hugetlb: Override set_huge_swap_pte_at() to support contiguous hugepages 



The default implementation of set_huge_swap_pte_at() does not support
hugepages consisting of contiguous ptes. Override it to add support for
contiguous hugepages.

Signed-off-by: default avatarPunit Agrawal <punit.agrawal@arm.com>
Cc: David Woods <dwoods@mellanox.com>
Signed-off-by: default avatarCatalin Marinas <catalin.marinas@arm.com>
parent c3e4ed5c

arch/arm64/include/asm/hugetlb.h

+3 −0
Original line number Diff line number Diff line
@@ -84,6 +84,9 @@ extern void huge_ptep_clear_flush(struct vm_area_struct *vma, 
extern void huge_pte_clear(struct mm_struct *mm, unsigned long addr,

			   pte_t *ptep, unsigned long sz);

#define huge_pte_clear huge_pte_clear

extern void set_huge_swap_pte_at(struct mm_struct *mm, unsigned long addr,

				 pte_t *ptep, pte_t pte, unsigned long sz);

#define set_huge_swap_pte_at set_huge_swap_pte_at



#include <asm-generic/hugetlb.h>

arch/arm64/mm/hugetlbpage.c

+12 −0
Original line number Diff line number Diff line
@@ -188,6 +188,18 @@ void set_huge_pte_at(struct mm_struct *mm, unsigned long addr, 
	}

}



void set_huge_swap_pte_at(struct mm_struct *mm, unsigned long addr,

			  pte_t *ptep, pte_t pte, unsigned long sz)

{

	int i, ncontig;

	size_t pgsize;



	ncontig = num_contig_ptes(sz, &pgsize);



	for (i = 0; i < ncontig; i++, ptep++)

		set_pte(ptep, pte);

}



pte_t *huge_pte_alloc(struct mm_struct *mm,

		      unsigned long addr, unsigned long sz)

{