diff options
| author | Atish Patra <atish.patra@wdc.com> | 2020-07-16 01:30:06 +0200 |
|---|---|---|
| committer | Palmer Dabbelt <palmerdabbelt@google.com> | 2020-07-30 20:37:48 +0200 |
| commit | 79b1feba54558bfb7df7c516dab29a7c9dba093c (patch) | |
| tree | 9ca9147c34ce65cb5e59485675978dca7b21d7dc /arch/riscv/kernel/traps.c | |
| parent | riscv: Select ARCH_HAS_DEBUG_VM_PGTABLE (diff) | |
| download | linux-79b1feba54558bfb7df7c516dab29a7c9dba093c.tar.xz linux-79b1feba54558bfb7df7c516dab29a7c9dba093c.zip | |
RISC-V: Setup exception vector early
The trap vector is set only in trap_init which may be too late in some
cases. Early ioremap/efi spits many warning messages which may be useful.
Setup the trap vector early so that any warning/bug can be handled before
generic code invokes trap_init.
Signed-off-by: Atish Patra <atish.patra@wdc.com>
Signed-off-by: Palmer Dabbelt <palmerdabbelt@google.com>
Diffstat (limited to 'arch/riscv/kernel/traps.c')
| -rw-r--r-- | arch/riscv/kernel/traps.c | 8 |
1 files changed, 1 insertions, 7 deletions
diff --git a/arch/riscv/kernel/traps.c b/arch/riscv/kernel/traps.c index 7d95cce5e47c..ad14f4466d92 100644 --- a/arch/riscv/kernel/traps.c +++ b/arch/riscv/kernel/traps.c @@ -174,13 +174,7 @@ int is_valid_bugaddr(unsigned long pc) } #endif /* CONFIG_GENERIC_BUG */ +/* stvec & scratch is already set from head.S */ void trap_init(void) { - /* - * Set sup0 scratch register to 0, indicating to exception vector - * that we are presently executing in the kernel - */ - csr_write(CSR_SCRATCH, 0); - /* Set the exception vector address */ - csr_write(CSR_TVEC, &handle_exception); } |