--- a/arch/x86/include/asm/apic.h
+++ b/arch/x86/include/asm/apic.h
@@ -305,7 +305,6 @@ struct apic {
 	void	(*setup_apic_routing)(void);
 	int	(*cpu_present_to_apicid)(int mps_cpu);
 	void	(*apicid_to_cpu_present)(int phys_apicid, physid_mask_t *retmap);
-	int	(*check_phys_apicid_present)(int phys_apicid);
 	int	(*phys_pkg_id)(int cpuid_apic, int index_msb);
 
 	u32	(*get_apic_id)(unsigned long x);
@@ -485,7 +484,6 @@ extern u32 apic_flat_calc_apicid(unsigne
 extern bool default_check_apicid_used(physid_mask_t *map, int apicid);
 extern void default_ioapic_phys_id_map(physid_mask_t *phys_map, physid_mask_t *retmap);
 extern int default_cpu_present_to_apicid(int mps_cpu);
-extern int default_check_phys_apicid_present(int phys_apicid);
 
 #else /* CONFIG_X86_LOCAL_APIC */
 
--- a/arch/x86/kernel/apic/apic_common.c
+++ b/arch/x86/kernel/apic/apic_common.c
@@ -35,11 +35,6 @@ int default_cpu_present_to_apicid(int mp
 }
 EXPORT_SYMBOL_GPL(default_cpu_present_to_apicid);
 
-int default_check_phys_apicid_present(int phys_apicid)
-{
-	return physid_isset(phys_apicid, phys_cpu_present_map);
-}
-
 int default_apic_id_valid(u32 apicid)
 {
 	return (apicid < 255);
--- a/arch/x86/kernel/apic/apic_flat_64.c
+++ b/arch/x86/kernel/apic/apic_flat_64.c
@@ -124,7 +124,6 @@ static struct apic apic_flat __ro_after_
 	.setup_apic_routing		= NULL,
 	.cpu_present_to_apicid		= default_cpu_present_to_apicid,
 	.apicid_to_cpu_present		= NULL,
-	.check_phys_apicid_present	= default_check_phys_apicid_present,
 	.phys_pkg_id			= flat_phys_pkg_id,
 
 	.get_apic_id			= flat_get_apic_id,
@@ -213,7 +212,6 @@ static struct apic apic_physflat __ro_af
 	.setup_apic_routing		= NULL,
 	.cpu_present_to_apicid		= default_cpu_present_to_apicid,
 	.apicid_to_cpu_present		= NULL,
-	.check_phys_apicid_present	= default_check_phys_apicid_present,
 	.phys_pkg_id			= flat_phys_pkg_id,
 
 	.get_apic_id			= flat_get_apic_id,
--- a/arch/x86/kernel/apic/apic_noop.c
+++ b/arch/x86/kernel/apic/apic_noop.c
@@ -107,8 +107,6 @@ struct apic apic_noop __ro_after_init =
 	.cpu_present_to_apicid		= default_cpu_present_to_apicid,
 	.apicid_to_cpu_present		= physid_set_mask_of_physid,
 
-	.check_phys_apicid_present	= default_check_phys_apicid_present,
-
 	.phys_pkg_id			= noop_phys_pkg_id,
 
 	.get_apic_id			= noop_get_apic_id,
--- a/arch/x86/kernel/apic/apic_numachip.c
+++ b/arch/x86/kernel/apic/apic_numachip.c
@@ -257,7 +257,6 @@ static const struct apic apic_numachip1
 	.setup_apic_routing		= NULL,
 	.cpu_present_to_apicid		= default_cpu_present_to_apicid,
 	.apicid_to_cpu_present		= NULL,
-	.check_phys_apicid_present	= default_check_phys_apicid_present,
 	.phys_pkg_id			= numachip_phys_pkg_id,
 
 	.get_apic_id			= numachip1_get_apic_id,
@@ -303,7 +302,6 @@ static const struct apic apic_numachip2
 	.setup_apic_routing		= NULL,
 	.cpu_present_to_apicid		= default_cpu_present_to_apicid,
 	.apicid_to_cpu_present		= NULL,
-	.check_phys_apicid_present	= default_check_phys_apicid_present,
 	.phys_pkg_id			= numachip_phys_pkg_id,
 
 	.get_apic_id			= numachip2_get_apic_id,
--- a/arch/x86/kernel/apic/bigsmp_32.c
+++ b/arch/x86/kernel/apic/bigsmp_32.c
@@ -63,11 +63,6 @@ static void bigsmp_ioapic_phys_id_map(ph
 	physids_promote(0xFFL, retmap);
 }
 
-static int bigsmp_check_phys_apicid_present(int phys_apicid)
-{
-	return 1;
-}
-
 static int bigsmp_phys_pkg_id(int cpuid_apic, int index_msb)
 {
 	return cpuid_apic >> index_msb;
@@ -138,7 +133,6 @@ static struct apic apic_bigsmp __ro_afte
 	.setup_apic_routing		= bigsmp_setup_apic_routing,
 	.cpu_present_to_apicid		= bigsmp_cpu_present_to_apicid,
 	.apicid_to_cpu_present		= physid_set_mask_of_physid,
-	.check_phys_apicid_present	= bigsmp_check_phys_apicid_present,
 	.phys_pkg_id			= bigsmp_phys_pkg_id,
 
 	.get_apic_id			= bigsmp_get_apic_id,
--- a/arch/x86/kernel/apic/probe_32.c
+++ b/arch/x86/kernel/apic/probe_32.c
@@ -80,7 +80,6 @@ static struct apic apic_default __ro_aft
 	.setup_apic_routing		= setup_apic_flat_routing,
 	.cpu_present_to_apicid		= default_cpu_present_to_apicid,
 	.apicid_to_cpu_present		= physid_set_mask_of_physid,
-	.check_phys_apicid_present	= default_check_phys_apicid_present,
 	.phys_pkg_id			= default_phys_pkg_id,
 
 	.get_apic_id			= default_get_apic_id,
--- a/arch/x86/kernel/apic/x2apic_cluster.c
+++ b/arch/x86/kernel/apic/x2apic_cluster.c
@@ -250,7 +250,6 @@ static struct apic apic_x2apic_cluster _
 	.setup_apic_routing		= NULL,
 	.cpu_present_to_apicid		= default_cpu_present_to_apicid,
 	.apicid_to_cpu_present		= NULL,
-	.check_phys_apicid_present	= default_check_phys_apicid_present,
 	.phys_pkg_id			= x2apic_phys_pkg_id,
 
 	.get_apic_id			= x2apic_get_apic_id,
--- a/arch/x86/kernel/apic/x2apic_phys.c
+++ b/arch/x86/kernel/apic/x2apic_phys.c
@@ -174,7 +174,6 @@ static struct apic apic_x2apic_phys __ro
 	.setup_apic_routing		= NULL,
 	.cpu_present_to_apicid		= default_cpu_present_to_apicid,
 	.apicid_to_cpu_present		= NULL,
-	.check_phys_apicid_present	= default_check_phys_apicid_present,
 	.phys_pkg_id			= x2apic_phys_pkg_id,
 
 	.get_apic_id			= x2apic_get_apic_id,
--- a/arch/x86/kernel/apic/x2apic_uv_x.c
+++ b/arch/x86/kernel/apic/x2apic_uv_x.c
@@ -846,7 +846,6 @@ static struct apic apic_x2apic_uv_x __ro
 	.setup_apic_routing		= NULL,
 	.cpu_present_to_apicid		= default_cpu_present_to_apicid,
 	.apicid_to_cpu_present		= NULL,
-	.check_phys_apicid_present	= default_check_phys_apicid_present,
 	.phys_pkg_id			= uv_phys_pkg_id,
 
 	.get_apic_id			= x2apic_get_apic_id,
--- a/arch/x86/xen/apic.c
+++ b/arch/x86/xen/apic.c
@@ -154,7 +154,6 @@ static struct apic xen_pv_apic = {
 	.setup_apic_routing		= NULL,
 	.cpu_present_to_apicid		= xen_cpu_present_to_apicid,
 	.apicid_to_cpu_present		= physid_set_mask_of_physid, /* Used on 32-bit */
-	.check_phys_apicid_present	= default_check_phys_apicid_present, /* smp_sanity_check needs it */
 	.phys_pkg_id			= xen_phys_pkg_id, /* detect_ht */
 
 	.get_apic_id 			= xen_get_apic_id,
