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Subject[PATCH 1/2] arm64/hugetlb: Use ptep_get() to get the pte value of a huge page
Date
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 and only be allowed to pass the head pte of
a contig-PTE/PMD size page.

Thus change to use ptep_get() to get the pte value of a huge page as
a preparation.

Signed-off-by: Baolin Wang <baolin.wang@linux.alibaba.com>
---
arch/arm64/mm/hugetlbpage.c | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/arch/arm64/mm/hugetlbpage.c b/arch/arm64/mm/hugetlbpage.c
index ca8e65c..be5e2f3 100644
--- a/arch/arm64/mm/hugetlbpage.c
+++ b/arch/arm64/mm/hugetlbpage.c
@@ -172,7 +172,7 @@ static pte_t get_clear_flush(struct mm_struct *mm,
unsigned long pgsize,
unsigned long ncontig)
{
- pte_t orig_pte = huge_ptep_get(ptep);
+ pte_t orig_pte = ptep_get(ptep);
bool valid = pte_valid(orig_pte);
unsigned long i, saddr = addr;

@@ -385,7 +385,7 @@ pte_t huge_ptep_get_and_clear(struct mm_struct *mm,
{
int ncontig;
size_t pgsize;
- pte_t orig_pte = huge_ptep_get(ptep);
+ pte_t orig_pte = ptep_get(ptep);

if (!pte_cont(orig_pte))
return ptep_get_and_clear(mm, addr, ptep);
@@ -408,11 +408,11 @@ static int __cont_access_flags_changed(pte_t *ptep, pte_t pte, int ncontig)
{
int i;

- if (pte_write(pte) != pte_write(huge_ptep_get(ptep)))
+ if (pte_write(pte) != pte_write(ptep_get(ptep)))
return 1;

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))
return 1;
--
1.8.3.1
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