diff options
| author | Klara Modin <klarasmodin@gmail.com> | 2025-06-17 14:58:47 +0200 |
|---|---|---|
| committer | Palmer Dabbelt <palmer@dabbelt.com> | 2025-06-23 16:30:05 -0700 |
| commit | c5136add3f9b4c23b8bbe5f4d722c95d4cfb936e (patch) | |
| tree | e030fc1dc78649134770c11a971cde64bf87fba6 | |
| parent | 890ba5be6335dbbbc99af14ea007befb5f83f174 (diff) | |
riscv: export boot_cpu_hartid
The mailbox controller driver for the Microchip Inter-processor
Communication can be built as a module. It uses cpuid_to_hartid_map and
commit 4783ce32b080 ("riscv: export __cpuid_to_hartid_map") enables that
to work for SMP. However, cpuid_to_hartid_map uses boot_cpu_hartid on
non-SMP kernels and this driver can be useful in such configurations[1].
Export boot_cpu_hartid so the driver can be built as a module on non-SMP
kernels as well.
Link: https://lore.kernel.org/lkml/20250617-confess-reimburse-876101e099cb@spud/ [1]
Cc: stable@vger.kernel.org
Fixes: e4b1d67e7141 ("mailbox: add Microchip IPC support")
Signed-off-by: Klara Modin <klarasmodin@gmail.com>
Acked-by: Conor Dooley <conor.dooley@microchip.com>
Link: https://lore.kernel.org/r/20250617125847.23829-1-klarasmodin@gmail.com
Signed-off-by: Palmer Dabbelt <palmer@dabbelt.com>
| -rw-r--r-- | arch/riscv/kernel/setup.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/riscv/kernel/setup.c b/arch/riscv/kernel/setup.c index f7c9a1caa83e..14888e5ea19a 100644 --- a/arch/riscv/kernel/setup.c +++ b/arch/riscv/kernel/setup.c @@ -50,6 +50,7 @@ atomic_t hart_lottery __section(".sdata") #endif ; unsigned long boot_cpu_hartid; +EXPORT_SYMBOL_GPL(boot_cpu_hartid); /* * Place kernel memory regions on the resource tree so that |