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| author | Zong Li <zong.li@sifive.com> | 2020-03-09 19:55:41 +0300 |
|---|---|---|
| committer | Palmer Dabbelt <palmerdabbelt@google.com> | 2020-03-26 19:24:45 +0300 |
| commit | d27c3c90817e4c5ea655714065a725b4abd576f9 (patch) | |
| tree | 6ab698bef5704fa108f5454047f6cf92cc196c07 /arch/riscv/include | |
| parent | 00cb41d5ad3189f52a59f42766918557693f94fa (diff) | |
| download | linux-d27c3c90817e4c5ea655714065a725b4abd576f9.tar.xz | |
riscv: add STRICT_KERNEL_RWX support
The commit contains that make text section as non-writable, rodata
section as read-only, and data section as non-executable.
The init section should be changed to non-executable.
Signed-off-by: Zong Li <zong.li@sifive.com>
Signed-off-by: Palmer Dabbelt <palmerdabbelt@google.com>
Diffstat (limited to 'arch/riscv/include')
| -rw-r--r-- | arch/riscv/include/asm/set_memory.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/arch/riscv/include/asm/set_memory.h b/arch/riscv/include/asm/set_memory.h index 4c5bae7ca01c..c38df4771c09 100644 --- a/arch/riscv/include/asm/set_memory.h +++ b/arch/riscv/include/asm/set_memory.h @@ -22,6 +22,14 @@ static inline int set_memory_x(unsigned long addr, int numpages) { return 0; } static inline int set_memory_nx(unsigned long addr, int numpages) { return 0; } #endif +#ifdef CONFIG_STRICT_KERNEL_RWX +void set_kernel_text_ro(void); +void set_kernel_text_rw(void); +#else +static inline void set_kernel_text_ro(void) { } +static inline void set_kernel_text_rw(void) { } +#endif + int set_direct_map_invalid_noflush(struct page *page); int set_direct_map_default_noflush(struct page *page); |