[PATCH 2/9] riscv: Safely remove huge_pte_offset() when manipulating NAPOT ptes
Alexandre Ghiti
alexghiti at rivosinc.com
Fri Mar 1 01:14:48 PST 2024
The pte_t pointer is expected to point to the first entry of the NAPOT
mapping so no need to use huge_pte_offset(), similarly to what is done
in arm64.
Signed-off-by: Alexandre Ghiti <alexghiti at rivosinc.com>
---
arch/riscv/mm/hugetlbpage.c | 3 ---
1 file changed, 3 deletions(-)
diff --git a/arch/riscv/mm/hugetlbpage.c b/arch/riscv/mm/hugetlbpage.c
index 3d84fbc5c572..2477d20c1497 100644
--- a/arch/riscv/mm/hugetlbpage.c
+++ b/arch/riscv/mm/hugetlbpage.c
@@ -274,7 +274,6 @@ int huge_ptep_set_access_flags(struct vm_area_struct *vma,
return ptep_set_access_flags(vma, addr, ptep, pte, dirty);
pte_num = arch_contpte_get_num_contig(ptep, 0, &pgsize);
- ptep = huge_pte_offset(mm, addr, pte_num * pgsize);
orig_pte = get_clear_contig_flush(mm, addr, ptep, pte_num);
@@ -319,10 +318,8 @@ void huge_ptep_set_wrprotect(struct mm_struct *mm,
}
pte_num = arch_contpte_get_num_contig(ptep, 0, &pgsize);
- ptep = huge_pte_offset(mm, addr, pte_num * pgsize);
orig_pte = get_clear_contig_flush(mm, addr, ptep, pte_num);
-
orig_pte = pte_wrprotect(orig_pte);
set_ptes(mm, addr, ptep, orig_pte, pte_num);
--
2.39.2
More information about the linux-riscv
mailing list