riscv64 can support sv48 now, so we can add more hugepage-related features which rely on 3th or 4th level of page table. These two patches will enable HAVE_ARCH_HUGE_VMAP and HAVE_ARCH_HUGE_VMALLOC. v2->v3: Fix the commit log. v1->v2: Fix the build error reported by kernel-test. Liu Shixin (2): riscv: Enable HAVE_ARCH_HUGE_VMAP for 64BIT riscv: Enable HAVE_ARCH_HUGE_VMALLOC for 64BIT .../features/vm/huge-vmap/arch-support.txt | 2 +- arch/riscv/Kconfig | 2 + arch/riscv/include/asm/vmalloc.h | 18 ++++ arch/riscv/mm/Makefile | 1 + arch/riscv/mm/pgtable.c | 83 +++++++++++++++++++ 5 files changed, 105 insertions(+), 1 deletion(-) create mode 100644 arch/riscv/mm/pgtable.c -- 2.25.1
