[PATCH V3 0/4] riscv: mm: Fixup & Optimize COMPAT code

guoren
2023-12-22T11:57:10Z

From: Guo Ren <guoren@linux.alibaba.com>

When the task is in COMPAT mode, the TASK_SIZE should be 2GB, so
STACK_TOP_MAX and arch_get_mmap_end must be limited to 2 GB. This series
fixes the problem made by commit: add2cc6b6515 ("RISC-V: mm: Restrict
address space for sv39,sv48,sv57") and optimizes the related coding
convention of TASK_SIZE.

Changelog:
v3:
- Remove wrong modification of arch_get_mmap_end
- Remove is_compat_task optimization
- Update comment log

v2:
https://lore.kernel.org/linux-riscv/20231221154702.2267684-1-guoren@kernel.org/
- Separate rename from fixup
- Add STACK_TOP_MAX fixup for compat
- Add Cleanup & rename patches

v1:
https://lore.kernel.org/linux-riscv/20231219111701.1886903-1-guoren@kernel.org/

Guo Ren (4):
riscv: mm: Fixup compat mode boot failure
riscv: mm: Fixup compat arch_get_mmap_end
riscv: mm: Remove unused TASK_SIZE_MIN
riscv: mm: Optimize TASK_SIZE definition

arch/riscv/include/asm/pgtable.h | 7 +++----
arch/riscv/include/asm/processor.h | 2 +-
2 files changed, 4 insertions(+), 5 deletions(-)

--
2.40.1