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riscv: Fix hugetlb_mask_last_page() when NAPOT is enabled

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When NAPOT is enabled, a new hugepage size is available and then we need
to make hugetlb_mask_last_page() aware of that.

Fixes: 82a1a1f3bfb6 ("riscv: mm: support Svnapot in hugetlb page")
Signed-off-by: Alexandre Ghiti <alexghiti@rivosinc.com>
Link: https://lore.kernel.org/r/20240117195741.1926459-3-alexghiti@rivosinc.com
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
This commit is contained in:
Alexandre Ghiti 2024-01-17 20:57:41 +01:00 committed by Palmer Dabbelt
parent 1458eb2c9d
commit a179a4bfb6
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1 changed files with 20 additions and 0 deletions
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20
arch/riscv/mm/hugetlbpage.c
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@ -125,6 +125,26 @@ pte_t *huge_pte_offset(struct mm_struct *mm,
return pte;
}
unsigned long hugetlb_mask_last_page(struct hstate *h)
{
unsigned long hp_size = huge_page_size(h);
switch (hp_size) {
#ifndef __PAGETABLE_PMD_FOLDED
case PUD_SIZE:
return P4D_SIZE - PUD_SIZE;
#endif
case PMD_SIZE:
return PUD_SIZE - PMD_SIZE;
case napot_cont_size(NAPOT_CONT64KB_ORDER):
return PMD_SIZE - napot_cont_size(NAPOT_CONT64KB_ORDER);
default:
break;
}
return 0UL;
}
static pte_t get_clear_contig(struct mm_struct *mm,
unsigned long addr,
pte_t *ptep,