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-rw-r--r--arch/x86/kernel/setup.c7
1 files changed, 6 insertions, 1 deletions
diff --git a/arch/x86/kernel/setup.c b/arch/x86/kernel/setup.c
index bbfbca5fea0c..9c337b0e8ba7 100644
--- a/arch/x86/kernel/setup.c
+++ b/arch/x86/kernel/setup.c
@@ -1221,11 +1221,16 @@ void __init setup_arch(char **cmdline_p)
*/
get_smp_config();
+ /*
+ * Systems w/o ACPI and mptables might not have it mapped the local
+ * APIC yet, but prefill_possible_map() might need to access it.
+ */
+ init_apic_mappings();
+
prefill_possible_map();
init_cpu_to_node();
- init_apic_mappings();
io_apic_init_mappings();
kvm_guest_init();