| Message ID | 20211124112021.788242-1-panqinglin2020@iscas.ac.cn (mailing list archive) |
|---|---|
| Headers | show |
| Series | Add Sv57 page table support | expand |
Am Mittwoch, 24. November 2021, 12:20:19 CET schrieb panqinglin2020@iscas.ac.cn: > From: Qinglin Pan <panqinglin2020@iscas.ac.cn> > > This patchset is based on Alex's Sv48 patchset v2. > > This implements Sv57 support at runtime. The kernel will try to boot with > 5-level page table firstly when the mmu-type field in dtb is "mmu,sv57" or null, > and will fallback to 4-level if the HW does not support it. > > Tested on: > - qemu rv64 sv39 > - qemu rv64 sv48 > - qemu rv64 sv57 > - Sifive unmatched On a beagleV (which supports only sv39) I've tested both the limit via the mmu-type in the devicetree and also that the fallback works when I disable the mmu-type in the dt, so Tested-by: Heiko Stuebner <heiko@sntech.de> > Qinglin Pan (2): > riscv,mm: Add Sv57 support based on Sv48 implementation > Documentation, mm: Add Sv57 vm layout documentation > > Documentation/riscv/vm-layout.rst | 36 ++++++ > 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 | 103 ++++++++++++++++- > arch/riscv/include/asm/pgtable.h | 4 +- > arch/riscv/kernel/cpu.c | 4 +- > arch/riscv/mm/init.c | 169 +++++++++++++++++++++++++--- > 10 files changed, 348 insertions(+), 24 deletions(-) > >
From: Qinglin Pan <panqinglin2020@iscas.ac.cn> This patchset is based on Alex's Sv48 patchset v2. This implements Sv57 support at runtime. The kernel will try to boot with 5-level page table firstly when the mmu-type field in dtb is "mmu,sv57" or null, and will fallback to 4-level if the HW does not support it. Tested on: - qemu rv64 sv39 - qemu rv64 sv48 - qemu rv64 sv57 - Sifive unmatched Qinglin Pan (2): riscv,mm: Add Sv57 support based on Sv48 implementation Documentation, mm: Add Sv57 vm layout documentation Documentation/riscv/vm-layout.rst | 36 ++++++ 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 | 103 ++++++++++++++++- arch/riscv/include/asm/pgtable.h | 4 +- arch/riscv/kernel/cpu.c | 4 +- arch/riscv/mm/init.c | 169 +++++++++++++++++++++++++--- 10 files changed, 348 insertions(+), 24 deletions(-)