From 872b368b2282604aafbc8af1275e0b28a73b8636 Mon Sep 17 00:00:00 2001 From: Huacai Chen Date: Thu, 29 Jun 2023 20:58:42 +0800 Subject: [PATCH] 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 --- arch/loongarch/kernel/smp.c | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/loongarch/kernel/smp.c b/arch/loongarch/kernel/smp.c index ed167e244cdae..a858a468f7468 100644 --- a/arch/loongarch/kernel/smp.c +++ b/arch/loongarch/kernel/smp.c @@ -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 } -- 2.30.2