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| author | Atish Patra <atish.patra@wdc.com> | 2018-10-02 12:15:05 -0700 |
|---|---|---|
| committer | Palmer Dabbelt <palmer@sifive.com> | 2018-10-22 17:03:37 -0700 |
| commit | f99fb607fb2bc0d4ce6b9adb764c65e37f40a92b (patch) | |
| tree | 082100e81815f6c2fa5d152821d24351aa16a871 /arch/riscv/kernel/setup.c | |
| parent | 6825c7a80f1863b975a00042abe140ea24813af2 (diff) | |
| download | lwn-f99fb607fb2bc0d4ce6b9adb764c65e37f40a92b.tar.gz lwn-f99fb607fb2bc0d4ce6b9adb764c65e37f40a92b.zip | |
RISC-V: Use Linux logical CPU number instead of hartid
Setup the cpu_logical_map during boot. Moreover, every SBI call
and PLIC context are based on the physical hartid. Use the logical
CPU to hartid mapping to pass correct hartid to respective functions.
Signed-off-by: Atish Patra <atish.patra@wdc.com>
Reviewed-by: Anup Patel <anup@brainfault.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
Diffstat (limited to 'arch/riscv/kernel/setup.c')
| -rw-r--r-- | arch/riscv/kernel/setup.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/arch/riscv/kernel/setup.c b/arch/riscv/kernel/setup.c index d5d8611066d5..5e9e6f934cc0 100644 --- a/arch/riscv/kernel/setup.c +++ b/arch/riscv/kernel/setup.c @@ -81,11 +81,17 @@ EXPORT_SYMBOL(empty_zero_page); /* The lucky hart to first increment this variable will boot the other cores */ atomic_t hart_lottery; +unsigned long boot_cpu_hartid; unsigned long __cpuid_to_hartid_map[NR_CPUS] = { [0 ... NR_CPUS-1] = INVALID_HARTID }; +void __init smp_setup_processor_id(void) +{ + cpuid_to_hartid_map(0) = boot_cpu_hartid; +} + #ifdef CONFIG_BLK_DEV_INITRD static void __init setup_initrd(void) { |