mbox series

[V4,0/4] riscv: mm: Fixup & Optimize COMPAT mode

Message ID 20240107063025.1628475-1-guoren@kernel.org
Headers
Series riscv: mm: Fixup & Optimize COMPAT mode |

Message

Guo Ren Jan. 7, 2024, 6:30 a.m. UTC 
  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:
v4:
 - Add "Reviewed-by" tags

v3:
https://lore.kernel.org/linux-riscv/20231222115703.2404036-1-guoren@kernel.org/
 - 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(-)