Merge patch series "riscv: Increase mmap_rnd_bits_max on Sv48/57"

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Sami Tolvanen <samitolvanen@google.com> says:

We noticed that 64-bit RISC-V kernels limit mmap_rnd_bits to 24
even if the hardware supports a larger virtual address space size
[1]. These two patches allow mmap_rnd_bits_max to be changed during
init, and bumps up the maximum randomness if we end up setting up
4/5-level paging at boot.

* b4-shazam-merge:
  riscv: mm: Update mmap_rnd_bits_max
  mm: Change mmap_rnd_bits_max to __ro_after_init

Link: https://lore.kernel.org/r/20230929211155.3910949-4-samitolvanen@google.com
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>

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Palmer Dabbelt 2024-01-24 07:07:45 -08:00

parent e2d6b54b93 7df1ff5a5c

commit d7e76ce7b7

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3 changed files with 8 additions and 2 deletions

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6

arch/riscv/mm/init.c

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2

include/linux/mm.h

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2

mm/mmap.c

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