Commit 872b368b authored Jun 29, 2023 by Huacai Chen

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



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>

parent 84d21f13

arch/loongarch/kernel/smp.c

+1 −0

Original line number	Diff line number	Diff line
		@@ -210,6 +210,7 @@ static void __init fdt_smp_setup(void)
		}

		loongson_sysconf.nr_cpus = num_processors;
		set_bit(0, &(loongson_sysconf.cores_io_master));
		#endif
		}