Messages in this thread | | | From | Anup Patel <> | Subject | [PATCH v4 0/6] Fixmap support and MM cleanups | Date | Wed, 13 Feb 2019 06:31:56 +0000 |
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This patchset does: 1. Moves MM related code from kernel/setup.c to mm/init.c 2. Implements compile-time fixed mappings
Using fixed mappings available, we can now get earlyprints even without SBI calls. For example, we can use kernel parameter "earlycon=uart8250,mmio,0x10000000" to get early prints on QEMU virt machine without using SBI calls.
The patchset is tested on QEMU virt machine. It is based on Linux-5.0-rc6 and can be found at riscv_fixmap_v4 branch of: https://github.com/avpatel/linux.git.
Changes since v3: - Re-worked and simplified PATCH6
Changes since v2: - Fixed commit description of PATCH6 - Ensured commit description of all PATCH use upto 72 characters per line
Changes since v1: - Use more characters per line in changelog of PATCH3 - Removed #ifndef __ASSEMBLY__ from PATCH5 - Use more characters per line in commets of PATCH5 - Added PATCH6 to implement keepinitrd kernel parameter
Anup Patel (6): RISC-V: Move free_initrd_mem() to kernel/setup.c RISC-V: Setup init_mm before parse_early_param() RISC-V: Move setup_bootmem() to mm/init.c RISC-V: Move setup_vm() to mm/init.c RISC-V: Implement compile-time fixed mappings RISC-V: Free-up initrd in free_initrd_mem()
arch/riscv/Kconfig | 3 + arch/riscv/include/asm/fixmap.h | 44 +++++++++++ arch/riscv/include/asm/pgtable.h | 1 + arch/riscv/kernel/setup.c | 107 +++----------------------- arch/riscv/mm/init.c | 124 ++++++++++++++++++++++++++++++- 5 files changed, 180 insertions(+), 99 deletions(-) create mode 100644 arch/riscv/include/asm/fixmap.h
-- 2.17.1
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