riscv: Use accessors to page table entries instead of direct dereference

As very well explained in commit 20a004e7b0 ("arm64: mm: Use READ_ONCE/WRITE_ONCE when accessing page tables"), an architecture whose page table walker can modify the PTE in parallel must use READ_ONCE()/WRITE_ONCE() macro to avoid any compiler transformation. So apply that to riscv which is such architecture. Signed-off-by: Alexandre Ghiti <alexghiti@rivosinc.com> Acked-by: Anup Patel <anup@brainfault.org> Link: https://lore.kernel.org/r/20231213203001.179237-5-alexghiti@rivosinc.com Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
2026-09-28 19:20:30 +00:00 · 2023-12-13 21:30:01 +01:00 · 2023-12-13 21:30:01 +01:00 · edf9556472
commit edf9556472
parent d6508999d1
10 changed files with 128 additions and 113 deletions
--- a/arch/riscv/include/asm/kfence.h
+++ b/arch/riscv/include/asm/kfence.h
--- a/arch/riscv/include/asm/pgtable-64.h
+++ b/arch/riscv/include/asm/pgtable-64.h
--- a/arch/riscv/include/asm/pgtable.h
+++ b/arch/riscv/include/asm/pgtable.h
--- a/arch/riscv/kernel/efi.c
+++ b/arch/riscv/kernel/efi.c
--- a/arch/riscv/kvm/mmu.c
+++ b/arch/riscv/kvm/mmu.c
--- a/arch/riscv/mm/fault.c
+++ b/arch/riscv/mm/fault.c
--- a/arch/riscv/mm/hugetlbpage.c
+++ b/arch/riscv/mm/hugetlbpage.c
--- a/arch/riscv/mm/kasan_init.c
+++ b/arch/riscv/mm/kasan_init.c
--- a/arch/riscv/mm/pageattr.c
+++ b/arch/riscv/mm/pageattr.c
--- a/arch/riscv/mm/pgtable.c
+++ b/arch/riscv/mm/pgtable.c