| Message ID | 20220127024844.2413385-1-panqinglin2020@iscas.ac.cn (mailing list archive) |
|---|---|
| Headers | show |
| Series | Add Sv57 page table support | expand |
On Wed, 26 Jan 2022 18:48:40 PST (-0800), panqinglin2020@iscas.ac.cn wrote: > From: Qinglin Pan <panqinglin2020@iscas.ac.cn> > > This implements Sv57 support at runtime. The kernel will try to boot with > 5-level page table firstly , and will fallback to 4-level if the HW does > not support it. And it will finally fallback to 3-level if the HW alse does > not support sv48. > > Tested on: > - qemu rv64 > - qemu rv64 with CONFIG_KASAN and CONFIG_KASAN_VMALLOC on. > - qemu rv32 > - sifive unmatched with CONFIG_KASAN and CONFIG_KASAN_VMALLOC on. > > Changes in v2: > - Fix KASAN for sv57, thanks to Alex > > Qinglin Pan (4): > riscv: mm: Control p4d's folding by pgtable_l5_enabled > riscv: mm: Prepare pt_ops helper functions for sv57 > riscv: mm: Set sv57 on defaultly > riscv: mm: Support kasan for sv57 > > arch/riscv/Kconfig | 4 +- > arch/riscv/include/asm/csr.h | 1 + > arch/riscv/include/asm/fixmap.h | 1 + > arch/riscv/include/asm/page.h | 1 + > arch/riscv/include/asm/pgalloc.h | 49 ++++++++ > arch/riscv/include/asm/pgtable-64.h | 106 +++++++++++++++++- > arch/riscv/include/asm/pgtable.h | 6 +- > arch/riscv/kernel/cpu.c | 4 +- > arch/riscv/mm/init.c | 166 ++++++++++++++++++++++++---- > arch/riscv/mm/kasan_init.c | 155 +++++++++++++++++++++++--- > 10 files changed, 451 insertions(+), 42 deletions(-) Thanks, this is on for-next.
From: Qinglin Pan <panqinglin2020@iscas.ac.cn> This implements Sv57 support at runtime. The kernel will try to boot with 5-level page table firstly , and will fallback to 4-level if the HW does not support it. And it will finally fallback to 3-level if the HW alse does not support sv48. Tested on: - qemu rv64 - qemu rv64 with CONFIG_KASAN and CONFIG_KASAN_VMALLOC on. - qemu rv32 - sifive unmatched with CONFIG_KASAN and CONFIG_KASAN_VMALLOC on. Changes in v2: - Fix KASAN for sv57, thanks to Alex Qinglin Pan (4): riscv: mm: Control p4d's folding by pgtable_l5_enabled riscv: mm: Prepare pt_ops helper functions for sv57 riscv: mm: Set sv57 on defaultly riscv: mm: Support kasan for sv57 arch/riscv/Kconfig | 4 +- arch/riscv/include/asm/csr.h | 1 + arch/riscv/include/asm/fixmap.h | 1 + arch/riscv/include/asm/page.h | 1 + arch/riscv/include/asm/pgalloc.h | 49 ++++++++ arch/riscv/include/asm/pgtable-64.h | 106 +++++++++++++++++- arch/riscv/include/asm/pgtable.h | 6 +- arch/riscv/kernel/cpu.c | 4 +- arch/riscv/mm/init.c | 166 ++++++++++++++++++++++++---- arch/riscv/mm/kasan_init.c | 155 +++++++++++++++++++++++--- 10 files changed, 451 insertions(+), 42 deletions(-)