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| author | Greentime Hu <greentime.hu@sifive.com> | 2024-01-15 05:59:20 +0000 |
|---|---|---|
| committer | Palmer Dabbelt <palmer@rivosinc.com> | 2024-01-16 07:13:53 -0800 |
| commit | ecd2ada8a5e0b464dab54f71d4ba7bbf5708711f (patch) | |
| tree | 23dd7e28a56871c4286f8dd07bb1bf5dbda14e18 /arch/riscv/kernel/process.c | |
| parent | b85ea95d086471afb4ad062012a4d73cd328fa86 (diff) | |
| download | linux-ecd2ada8a5e0b464dab54f71d4ba7bbf5708711f.tar.gz linux-ecd2ada8a5e0b464dab54f71d4ba7bbf5708711f.tar.bz2 linux-ecd2ada8a5e0b464dab54f71d4ba7bbf5708711f.zip | |
riscv: Add support for kernel mode vector
Add kernel_vector_begin() and kernel_vector_end() function declarations
and corresponding definitions in kernel_mode_vector.c
These are needed to wrap uses of vector in kernel mode.
Co-developed-by: Vincent Chen <vincent.chen@sifive.com>
Signed-off-by: Vincent Chen <vincent.chen@sifive.com>
Signed-off-by: Greentime Hu <greentime.hu@sifive.com>
Signed-off-by: Andy Chiu <andy.chiu@sifive.com>
Reviewed-by: Eric Biggers <ebiggers@google.com>
Tested-by: Björn Töpel <bjorn@rivosinc.com>
Tested-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Link: https://lore.kernel.org/r/20240115055929.4736-2-andy.chiu@sifive.com
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
Diffstat (limited to 'arch/riscv/kernel/process.c')
| -rw-r--r-- | arch/riscv/kernel/process.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/riscv/kernel/process.c b/arch/riscv/kernel/process.c index 4f21d970a129..4a1275db1146 100644 --- a/arch/riscv/kernel/process.c +++ b/arch/riscv/kernel/process.c @@ -221,6 +221,7 @@ int copy_thread(struct task_struct *p, const struct kernel_clone_args *args) childregs->a0 = 0; /* Return value of fork() */ p->thread.s[0] = 0; } + p->thread.riscv_v_flags = 0; p->thread.ra = (unsigned long)ret_from_fork; p->thread.sp = (unsigned long)childregs; /* kernel sp */ return 0; |