x86: use dyn_array in io_apic_xx.c

Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

1 files changed, 6 insertions, 0 deletions

diff --git a/arch/x86/kernel/setup.c b/arch/x86/kernel/setup.c
index 2255782e8d4b..558ec26b08e2 100644
--- a/arch/x86/kernel/setup.c
+++ b/arch/x86/kernel/setup.c
@@ -1067,9 +1067,15 @@ void __init setup_arch(char **cmdline_p)
 #endif
 
         prefill_possible_map();
+
 #ifdef CONFIG_X86_64
+        /* need to wait for nr_cpu_ids settle down */
+        if (nr_irqs == NR_IRQS)
+                nr_irqs = 32 * nr_cpu_ids + 224;
         init_cpu_to_node();
 #endif
+        pin_map_size = nr_irqs * 2;
+        first_free_entry = nr_irqs;
 
         init_apic_mappings();
         ioapic_init_mappings();