Unused entries in ioapics array should be marked as free at startup, so they could be used by hot-added IOAPICs. Signed-off-by: Jiang Liu <jiang.liu@xxxxxxxxxx> --- arch/x86/kernel/apic/io_apic.c | 4 ++++ 1 files changed, 4 insertions(+), 0 deletions(-) diff --git a/arch/x86/kernel/apic/io_apic.c b/arch/x86/kernel/apic/io_apic.c index 7412eb8..622374f 100644 --- a/arch/x86/kernel/apic/io_apic.c +++ b/arch/x86/kernel/apic/io_apic.c @@ -392,6 +392,10 @@ int __init arch_early_irq_init(void) cpumask_set_cpu(0, cfg->domain); } + /* Mark all left entries as free for IOAPIC hot-adding. */ + for (i = nr_ioapics; i < MAX_IO_APICS; i++) + ioapics[i].mp_config.apicid = 0xff; + return 0; } -- 1.7.5.4 -- To unsubscribe from this list: send the line "unsubscribe linux-pci" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
