1 files changed, 4 insertions, 0 deletions

diff --git a/arch/x86/kernel/setup.c b/arch/x86/kernel/setup.c
index b2c97874ec0f..0fa6790c1dd3 100644
--- a/arch/x86/kernel/setup.c
+++ b/arch/x86/kernel/setup.c
@@ -1073,6 +1073,7 @@ void __init setup_arch(char **cmdline_p)
 #endif
 
         prefill_possible_map();
+
 #ifdef CONFIG_X86_64
         init_cpu_to_node();
 #endif
@@ -1080,6 +1081,9 @@ void __init setup_arch(char **cmdline_p)
         init_apic_mappings();
         ioapic_init_mappings();
 
+        /* need to wait for io_apic is mapped */
+        nr_irqs = probe_nr_irqs();
+
         kvm_guest_init();
 
         e820_reserve_resources();