diff options
| author | Qinglin Pan <panqinglin2020@iscas.ac.cn> | 2023-02-09 21:16:46 +0800 |
|---|---|---|
| committer | Palmer Dabbelt <palmer@rivosinc.com> | 2023-03-07 19:39:16 -0800 |
| commit | 82a1a1f3bfb628c4a44652349b94c66c7e8be7c9 (patch) | |
| tree | 5948a143d42878d05f8c6ff7a1c4e1f206604571 /arch/riscv/Kconfig | |
| parent | 23ad288aaf153a78b042e10062be1a6284909f95 (diff) | |
riscv: mm: support Svnapot in hugetlb page
Svnapot can be used to support 64KB hugetlb page, so it can become a new
option when using hugetlbfs. Add a basic implementation of hugetlb page,
and support 64KB as a size in it by using Svnapot.
For test, boot kernel with command line contains "default_hugepagesz=64K
hugepagesz=64K hugepages=20" and run a simple test like this:
tools/testing/selftests/vm/map_hugetlb 1 16
And it should be passed.
Signed-off-by: Qinglin Pan <panqinglin00@gmail.com>
Reviewed-by: Andrew Jones <ajones@ventanamicro.com>
Link: https://lore.kernel.org/r/20230209131647.17245-3-panqinglin00@gmail.com
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
Diffstat (limited to 'arch/riscv/Kconfig')
| -rw-r--r-- | arch/riscv/Kconfig | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig index abbb7b94488d..a81a89131bb9 100644 --- a/arch/riscv/Kconfig +++ b/arch/riscv/Kconfig @@ -44,7 +44,7 @@ config RISCV select ARCH_USE_QUEUED_RWLOCKS select ARCH_WANT_DEFAULT_TOPDOWN_MMAP_LAYOUT if MMU select ARCH_WANT_FRAME_POINTERS - select ARCH_WANT_GENERAL_HUGETLB + select ARCH_WANT_GENERAL_HUGETLB if !RISCV_ISA_SVNAPOT select ARCH_WANT_HUGE_PMD_SHARE if 64BIT select ARCH_WANTS_THP_SWAP if HAVE_ARCH_TRANSPARENT_HUGEPAGE select BINFMT_FLAT_NO_DATA_START_OFFSET if !MMU |