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| author |   Atish Patra <atishp@rivosinc.com> | 2022-01-20 01:09:17 -0800 |
|---|---|---|
| committer |   Palmer Dabbelt <palmer@rivosinc.com> | 2022-01-20 09:27:16 -0800 |
| commit | 2ffc48fc7071da4b2d881b0f21d37ed05feb697b (patch) | |
| tree | fa6687a62f494303c5baf45bcb05aefe9ba1526d /arch/riscv/kernel/head.h | |
| parent | RISC-V: Move the entire hart selection via lottery to SMP (diff) | |
| download | wireguard-linux-2ffc48fc7071da4b2d881b0f21d37ed05feb697b.tar.xz wireguard-linux-2ffc48fc7071da4b2d881b0f21d37ed05feb697b.zip | |
RISC-V: Move spinwait booting method to its own config
The spinwait booting method should only be used for platforms with older
firmware without SBI HSM extension or M-mode firmware because spinwait
method can't support cpu hotplug, kexec or sparse hartid. It is better
to move the entire spinwait implementation to its own config which can
be disabled if required. It is enabled by default to maintain backward
compatibility and M-mode Linux.
Reviewed-by: Anup Patel <anup@brainfault.org>
Signed-off-by: Atish Patra <atishp@rivosinc.com>
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
Diffstat (limited to '')
| -rw-r--r-- | arch/riscv/kernel/head.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/riscv/kernel/head.h b/arch/riscv/kernel/head.h index 5393cca77790..726731ada534 100644 --- a/arch/riscv/kernel/head.h +++ b/arch/riscv/kernel/head.h @@ -16,7 +16,9 @@ asmlinkage void __init setup_vm(uintptr_t dtb_pa); asmlinkage void __init __copy_data(void); #endif +#ifdef CONFIG_RISCV_BOOT_SPINWAIT extern void *__cpu_spinwait_stack_pointer[]; extern void *__cpu_spinwait_task_pointer[]; +#endif #endif /* __ASM_HEAD_H */ |