diff options
| author | Heiko Stuebner <heiko.stuebner@vrull.eu> | 2022-12-23 23:13:32 +0100 |
|---|---|---|
| committer | Palmer Dabbelt <palmer@rivosinc.com> | 2022-12-29 06:59:52 -0800 |
| commit | 27c653c06505f084bcb57f7575916d60efb32279 (patch) | |
| tree | bfa28b7b38414bca1ec2721c299c21bfbfb360ac /arch/riscv/include/asm/alternative.h | |
| parent | 47f05757d3d898b4756d6d5c06e77a37337823e9 (diff) | |
RISC-V: fix auipc-jalr addresses in patched alternatives
Alternatives live in a different section, so addresses used by call
functions will point to wrong locations after the patch got applied.
Similar to arm64, adjust the location to consider that offset.
Reviewed-by: Conor Dooley <conor.dooley@microchip.com>
Reviewed-by: Andrew Jones <ajones@ventanamicro.com>
Reviewed-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Tested-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Signed-off-by: Heiko Stuebner <heiko.stuebner@vrull.eu>
Link: https://lore.kernel.org/r/20221223221332.4127602-13-heiko@sntech.de
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
Diffstat (limited to 'arch/riscv/include/asm/alternative.h')
| -rw-r--r-- | arch/riscv/include/asm/alternative.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/riscv/include/asm/alternative.h b/arch/riscv/include/asm/alternative.h index 6511dd73e812..1bd4027d34ca 100644 --- a/arch/riscv/include/asm/alternative.h +++ b/arch/riscv/include/asm/alternative.h @@ -27,6 +27,9 @@ void __init apply_boot_alternatives(void); void __init apply_early_boot_alternatives(void); void apply_module_alternatives(void *start, size_t length); +void riscv_alternative_fix_offsets(void *alt_ptr, unsigned int len, + int patch_offset); + struct alt_entry { void *old_ptr; /* address of original instruciton or data */ void *alt_ptr; /* address of replacement instruction or data */ |