diff options
| author | Andy Chiu <andy.chiu@sifive.com> | 2023-08-16 15:54:49 +0000 |
|---|---|---|
| committer | Palmer Dabbelt <palmer@rivosinc.com> | 2023-08-22 13:55:12 -0700 |
| commit | c35f3aa34509085bfc9800c86bc9998f8954933d (patch) | |
| tree | 327864578d458b922a5a8a17d2d1ab95ffc90675 /arch/riscv/include/uapi | |
| parent | e3f9324b231aba1dc707572bfe80be210c2d4cbd (diff) | |
RISC-V: vector: export VLENB csr in __sc_riscv_v_state
VLENB is critical for callers of ptrace to reconstruct Vector register
files from the register dump of NT_RISCV_VECTOR. Also, future systems
may will have a writable VLENB, so add it now to potentially save future
compatibility issue.
Fixes: 0c59922c769a ("riscv: Add ptrace vector support")
Signed-off-by: Andy Chiu <andy.chiu@sifive.com>
Link: https://lore.kernel.org/r/20230816155450.26200-3-andy.chiu@sifive.com
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
Diffstat (limited to 'arch/riscv/include/uapi')
| -rw-r--r-- | arch/riscv/include/uapi/asm/ptrace.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/riscv/include/uapi/asm/ptrace.h b/arch/riscv/include/uapi/asm/ptrace.h index e17c550986a6..283800130614 100644 --- a/arch/riscv/include/uapi/asm/ptrace.h +++ b/arch/riscv/include/uapi/asm/ptrace.h @@ -97,6 +97,7 @@ struct __riscv_v_ext_state { unsigned long vl; unsigned long vtype; unsigned long vcsr; + unsigned long vlenb; void *datap; /* * In signal handler, datap will be set a correct user stack offset |