Use the default implementation. Signed-off-by: Thomas Gleixner --- arch/x86/kernel/apic/bigsmp_32.c | 1 + 1 file changed, 1 insertion(+) Index: linux/arch/x86/kernel/apic/bigsmp_32.c =================================================================== --- linux.orig/arch/x86/kernel/apic/bigsmp_32.c +++ linux/arch/x86/kernel/apic/bigsmp_32.c @@ -175,6 +175,7 @@ static struct apic apic_bigsmp = { .cpu_mask_to_apicid_and = default_cpu_mask_to_apicid_and, + .send_IPI = default_send_IPI_single_phys, .send_IPI_mask = default_send_IPI_mask_sequence_phys, .send_IPI_mask_allbutself = NULL, .send_IPI_allbutself = bigsmp_send_IPI_allbutself,