On Sat, 19 Jan 2019 05:27:53 PST (-0800), Anup Patel wrote:
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-rc2 and can be found at riscv_fixmap_v2 branch of:
https://github.com/avpatel/linux.git.
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: Implement keepinitrd kernel parameter
arch/riscv/Kconfig | 3 +
arch/riscv/include/asm/fixmap.h | 44 +++++++++++
arch/riscv/include/asm/pgtable.h | 1 +
arch/riscv/kernel/setup.c | 114 ++++++----------------------
arch/riscv/mm/init.c | 124 ++++++++++++++++++++++++++++++-
5 files changed, 189 insertions(+), 97 deletions(-)
create mode 100644 arch/riscv/include/asm/fixmap.h
I'm getting some git issue when trying to merge the third patch via email
$ mhng-pipe-show_stdout 4 | git am -s
Applying: RISC-V: Move setup_bootmem() to mm/init.c
error: patch failed: arch/riscv/kernel/setup.c:163
error: arch/riscv/kernel/setup.c: patch does not apply
Patch failed at 0001 RISC-V: Move setup_bootmem() to mm/init.c
Use 'git am --show-current-patch' to see the failed patch
When you have resolved this problem, run "git am --continue".
If you prefer to skip this patch, run "git am --skip" instead.
To restore the original branch and stop patching, run "git am --abort".
can you send a PR with a signed tag? I'll include this as part of the next
merge window.
Reviewed-by: Palmer Dabbelt <pal...@sifive.com>
Thanks!
