diff options
| author | Jisheng Zhang <jszhang@kernel.org> | 2023-05-09 18:26:41 +0300 |
|---|---|---|
| committer | Palmer Dabbelt <palmer@rivosinc.com> | 2023-06-14 17:17:45 +0300 |
| commit | de658bcf03339561572e5dad3ec8ecedd1256747 (patch) | |
| tree | b6e96b384269f9f8ad4edadc9fc185d0695e4b5e /arch/riscv/include | |
| parent | c818fea83de4cdf5072c7cf00dd289fc9c6e1c68 (diff) | |
| download | linux-de658bcf03339561572e5dad3ec8ecedd1256747.tar.xz | |
riscv: mm: stub extable related functions/macros for !MMU
extable relies on the MMU to work properly, so it's useless to
include __ex_table sections and build extable related functions for
!MMU case.
Signed-off-by: Jisheng Zhang <jszhang@kernel.org>
Link: https://lore.kernel.org/r/20230509152641.805-1-jszhang@kernel.org
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
Diffstat (limited to 'arch/riscv/include')
| -rw-r--r-- | arch/riscv/include/asm/asm-extable.h | 6 | ||||
| -rw-r--r-- | arch/riscv/include/asm/extable.h | 4 |
2 files changed, 10 insertions, 0 deletions
diff --git a/arch/riscv/include/asm/asm-extable.h b/arch/riscv/include/asm/asm-extable.h index 14be0673f5b5..00a96e7a9664 100644 --- a/arch/riscv/include/asm/asm-extable.h +++ b/arch/riscv/include/asm/asm-extable.h @@ -7,6 +7,8 @@ #define EX_TYPE_BPF 2 #define EX_TYPE_UACCESS_ERR_ZERO 3 +#ifdef CONFIG_MMU + #ifdef __ASSEMBLY__ #define __ASM_EXTABLE_RAW(insn, fixup, type, data) \ @@ -62,4 +64,8 @@ #endif /* __ASSEMBLY__ */ +#else /* CONFIG_MMU */ + #define _ASM_EXTABLE_UACCESS_ERR(insn, fixup, err) +#endif /* CONFIG_MMU */ + #endif /* __ASM_ASM_EXTABLE_H */ diff --git a/arch/riscv/include/asm/extable.h b/arch/riscv/include/asm/extable.h index 512012d193dc..3eb5c1f7bf34 100644 --- a/arch/riscv/include/asm/extable.h +++ b/arch/riscv/include/asm/extable.h @@ -32,7 +32,11 @@ do { \ (b)->data = (tmp).data; \ } while (0) +#ifdef CONFIG_MMU bool fixup_exception(struct pt_regs *regs); +#else +static inline bool fixup_exception(struct pt_regs *regs) { return false; } +#endif #if defined(CONFIG_BPF_JIT) && defined(CONFIG_ARCH_RV64I) bool ex_handler_bpf(const struct exception_table_entry *ex, struct pt_regs *regs); |