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arm64/hugetlb: Use ptep_get() to get the pte value of a huge page

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The original huge_ptep_get() on ARM64 is just a wrapper of ptep_get(),
which will not take into account any contig-PTEs dirty and access bits.
Meanwhile we will implement a new ARM64-specific huge_ptep_get()
interface in following patch, which will take into account any contig-PTEs
dirty and access bits. To keep the same efficient logic to get the pte
value, change to use ptep_get() as a preparation.

Signed-off-by: Baolin Wang <baolin.wang@linux.alibaba.com>
Reviewed-by: Muchun Song <songmuchun@bytedance.com>
Reviewed-by: Anshuman Khandual <anshuman.khandual@arm.com>
Link: https://lore.kernel.org/r/5113ed6e103f995e1d0f0c9fda0373b761bbcad2.1652496622.git.baolin.wang@linux.alibaba.com
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
This commit is contained in:
Baolin Wang 2022-05-16 08:55:57 +08:00 committed by Catalin Marinas
parent c733812dd7
commit f0d9d79ec7
1 changed files with 4 additions and 4 deletions
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8
arch/arm64/mm/hugetlbpage.c
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@ -172,7 +172,7 @@ static pte_t get_clear_contig(struct mm_struct *mm,
unsigned long pgsize, unsigned long pgsize,
unsigned long ncontig) unsigned long ncontig)
{ {
pte_t orig_pte = huge_ptep_get(ptep); pte_t orig_pte = ptep_get(ptep);
unsigned long i; unsigned long i;
for (i = 0; i < ncontig; i++, addr += pgsize, ptep++) { for (i = 0; i < ncontig; i++, addr += pgsize, ptep++) {
@ -379,7 +379,7 @@ pte_t huge_ptep_get_and_clear(struct mm_struct *mm,
{ {
int ncontig; int ncontig;
size_t pgsize; size_t pgsize;
pte_t orig_pte = huge_ptep_get(ptep); pte_t orig_pte = ptep_get(ptep);
if (!pte_cont(orig_pte)) if (!pte_cont(orig_pte))
return ptep_get_and_clear(mm, addr, ptep); return ptep_get_and_clear(mm, addr, ptep);
@ -402,11 +402,11 @@ static int __cont_access_flags_changed(pte_t *ptep, pte_t pte, int ncontig)
{ {
int i; int i;
if (pte_write(pte) != pte_write(huge_ptep_get(ptep))) if (pte_write(pte) != pte_write(ptep_get(ptep)))
return 1; return 1;
for (i = 0; i < ncontig; i++) { for (i = 0; i < ncontig; i++) {
pte_t orig_pte = huge_ptep_get(ptep + i); pte_t orig_pte = ptep_get(ptep + i);
if (pte_dirty(pte) != pte_dirty(orig_pte)) if (pte_dirty(pte) != pte_dirty(orig_pte))
return 1; return 1;