diff mbox series

LoongArch: Set CPU#0 as the io master for FDT

Message ID 20230621100544.109804-1-chenhuacai@loongson.cn
State New
Headers
Series LoongArch: Set CPU#0 as the io master for FDT |

Commit Message

Huacai Chen June 21, 2023, 10:05 a.m. UTC 
  ACPI systems set io masters by parsing ACPI MADT, FDT systems have no
MADT so we explicitly set CPU#0 as the io master. Otherwise CPU#0 will
be considered as hotpluggable.

Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
---
 arch/loongarch/kernel/smp.c | 1 +
 1 file changed, 1 insertion(+)
diff mbox series

Patch

diff --git a/arch/loongarch/kernel/smp.c b/arch/loongarch/kernel/smp.c
index d6dfb4c7ec75..46e611882136 100644
--- a/arch/loongarch/kernel/smp.c
+++ b/arch/loongarch/kernel/smp.c
@@ -207,6 +207,7 @@  static void __init fdt_smp_setup(void)
 	}
 
 	loongson_sysconf.nr_cpus = num_processors;
+	set_bit(0, &(loongson_sysconf.cores_io_master));
 #endif
 }