| Message ID | 20230308074853.4393-1-panqinglin00@gmail.com (mailing list archive) |
|---|---|
| Headers | show |
| Series | riscv, mm: detect svnapot cpu support at runtime | expand |
Hello: This series was applied to riscv/linux.git (for-next) by Palmer Dabbelt <palmer@rivosinc.com>: On Wed, 8 Mar 2023 15:48:50 +0800 you wrote: > Svnapot is a RISC-V extension for marking contiguous 4K pages as a non-4K > page. This patch set is for using Svnapot in hugetlb fs and huge vmap. > > This patchset adds a Kconfig item for using Svnapot in > "Platform type"->"SVNAPOT extension support". Its default value is on, > and people can set it off if they don't allow kernel to detect Svnapot > hardware support and leverage it. > > [...] Here is the summary with links: - [v14,1/3] riscv: mm: modify pte format for Svnapot (no matching commit) - [v14,2/3] riscv: mm: support Svnapot in hugetlb page (no matching commit) - [v14,3/3] riscv: mm: support Svnapot in huge vmap https://git.kernel.org/riscv/c/ce173474cf19 You are awesome, thank you!
Svnapot is a RISC-V extension for marking contiguous 4K pages as a non-4K page. This patch set is for using Svnapot in hugetlb fs and huge vmap. This patchset adds a Kconfig item for using Svnapot in "Platform type"->"SVNAPOT extension support". Its default value is on, and people can set it off if they don't allow kernel to detect Svnapot hardware support and leverage it. Tested on: - qemu rv64 with "Svnapot support" off and svnapot=true. - qemu rv64 with "Svnapot support" on and svnapot=true. - qemu rv64 with "Svnapot support" off and svnapot=false. - qemu rv64 with "Svnapot support" on and svnapot=false. Changes in v2: - detect Svnapot hardware support at boot time. Changes in v3: - do linear mapping again if has_svnapot Changes in v4: - fix some errors/warns reported by checkpatch.pl, thanks @Conor Changes in v5: - modify code according to @Conor and @Heiko Changes in v6: - use static key insead of alternative errata Changes in v7: - add napot_cont_order for possible more napot order in the future - remove linear mapping related code from this patchset to another patch - refactor hugetlb code for svnapot according to thanks @Andrew @Conor - use tools/testing/selftests/vm/map_hugetlb as hugetlb testing program - support svnapot in huge vmap on newer for-next branch Changes in v8: - fix compilation errors in rv32_defconfig - insert some lines of whitespace according to @Conor's suggestion Changes in v9: - use alternative to avoid using static branches inside heavily used inline functions - change napot_cont_mask definition - post test_vmalloc modification about testing vmalloc_huge Changes in v10: - fix some nits caught by @Andrew - collect Reviewed-by/Acked-by - add memory leak warning in KConfig text - replace test_vmalloc patch link with the standard one Changes in v11: - add more detailed warning about HUGETLBFS and SVNAPOT in KConfig text - fix missing reverse-xmas tree Changes in v12: - rebase on the new ISA extension API [1] Changes in v13: - fix warnings reported by patchwork Changes in v14: - rebase on for-next [1]https://lore.kernel.org/all/20230128172856.3814-5-jszhang@kernel.org/ Qinglin Pan (3): riscv: mm: modify pte format for Svnapot riscv: mm: support Svnapot in hugetlb page riscv: mm: support Svnapot in huge vmap arch/riscv/Kconfig | 21 +- arch/riscv/include/asm/hugetlb.h | 34 +++- arch/riscv/include/asm/hwcap.h | 3 +- arch/riscv/include/asm/page.h | 5 - arch/riscv/include/asm/pgtable-64.h | 34 ++++ arch/riscv/include/asm/pgtable.h | 39 +++- arch/riscv/include/asm/vmalloc.h | 61 +++++- arch/riscv/kernel/cpu.c | 1 + arch/riscv/kernel/cpufeature.c | 1 + arch/riscv/mm/hugetlbpage.c | 301 ++++++++++++++++++++++++++++ 10 files changed, 490 insertions(+), 10 deletions(-)