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| author | Sia Jee Heng <jeeheng.sia@starfivetech.com> | 2023-03-30 09:43:20 +0300 |
|---|---|---|
| committer | Palmer Dabbelt <palmer@rivosinc.com> | 2023-04-29 21:25:12 +0300 |
| commit | a15c90b67a662c75f469822a7f95c7aaa049e28f (patch) | |
| tree | 21ddf5fa0a3ebcecfbdfdeead34a1d493fed1d00 /arch/riscv/mm/pageattr.c | |
| parent | fcb89863d1b798565db6bdaf8f97f65823c2fd1b (diff) | |
| download | linux-a15c90b67a662c75f469822a7f95c7aaa049e28f.tar.xz | |
RISC-V: mm: Enable huge page support to kernel_page_present() function
Currently kernel_page_present() function doesn't support huge page
detection causes the function to mistakenly return false to the
hibernation core.
Add huge page detection to the function to solve the problem.
Fixes: 9e953cda5cdf ("riscv: Introduce huge page support for 32/64bit kernel")
Signed-off-by: Sia Jee Heng <jeeheng.sia@starfivetech.com>
Reviewed-by: Ley Foon Tan <leyfoon.tan@starfivetech.com>
Reviewed-by: Mason Huo <mason.huo@starfivetech.com>
Reviewed-by: Andrew Jones <ajones@ventanamicro.com>
Reviewed-by: Alexandre Ghiti <alexghiti@rivosinc.com>
Link: https://lore.kernel.org/r/20230330064321.1008373-4-jeeheng.sia@starfivetech.com
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
Diffstat (limited to 'arch/riscv/mm/pageattr.c')
| -rw-r--r-- | arch/riscv/mm/pageattr.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/arch/riscv/mm/pageattr.c b/arch/riscv/mm/pageattr.c index 86c56616e5de..ea3d61de065b 100644 --- a/arch/riscv/mm/pageattr.c +++ b/arch/riscv/mm/pageattr.c @@ -217,18 +217,26 @@ bool kernel_page_present(struct page *page) pgd = pgd_offset_k(addr); if (!pgd_present(*pgd)) return false; + if (pgd_leaf(*pgd)) + return true; p4d = p4d_offset(pgd, addr); if (!p4d_present(*p4d)) return false; + if (p4d_leaf(*p4d)) + return true; pud = pud_offset(p4d, addr); if (!pud_present(*pud)) return false; + if (pud_leaf(*pud)) + return true; pmd = pmd_offset(pud, addr); if (!pmd_present(*pmd)) return false; + if (pmd_leaf(*pmd)) + return true; pte = pte_offset_kernel(pmd, addr); return pte_present(*pte); |