diff options
author | Anup Patel <anup.patel@wdc.com> | 2020-06-01 10:36:56 +0530 |
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committer | Palmer Dabbelt <palmerdabbelt@google.com> | 2020-06-09 19:11:26 -0700 |
commit | 4e0f9e3a6104261f25b16fcab02fc96f5666ba11 (patch) | |
tree | 96404fb2ee2b129c58e4e99261e756dc90e9bdcc /arch/riscv/kernel/patch.c | |
parent | e71ee06e3ca337758ac95288a917622ff9808fa0 (diff) |
RISC-V: Don't mark init section as non-executable
The head text section (i.e. _start, secondary_start_sbi, etc) and the
init section fall under same page table level-1 mapping.
Currently, the runtime CPU hotplug is broken because we are marking
init section as non-executable which in-turn marks head text section
as non-executable.
Further investigating other architectures, it seems marking the init
section as non-executable is redundant because the init section pages
are anyway poisoned and freed.
To fix broken runtime CPU hotplug, we simply remove the code marking
the init section as non-executable.
Fixes: d27c3c90817e ("riscv: add STRICT_KERNEL_RWX support")
Cc: stable@vger.kernel.org
Signed-off-by: Anup Patel <anup.patel@wdc.com>
Reviewed-by: Zong Li <zong.li@sifive.com>
Reviewed-by: Atish Patra <atish.patra@wdc.com>
Signed-off-by: Palmer Dabbelt <palmerdabbelt@google.com>
Diffstat (limited to 'arch/riscv/kernel/patch.c')
0 files changed, 0 insertions, 0 deletions