x86/apic: Use u32 for [gs]et_apic_id()

APIC IDs are used with random data types u16, u32, int, unsigned int,
unsigned long.

Make it all consistently use u32 because that reflects the hardware
register width.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Juergen Gross <jgross@suse.com>
Tested-by: Sohil Mehta <sohil.mehta@intel.com>
Tested-by: Michael Kelley <mikelley@microsoft.com>
Tested-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Tested-by: Zhang Rui <rui.zhang@intel.com>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lore.kernel.org/r/20230814085113.172569282@linutronix.de

arch/x86/include/asm/apic.h

@@ -298,8 +298,8 @@ struct apic {
 	u32	(*cpu_present_to_apicid)(int mps_cpu);
 	u32	(*phys_pkg_id)(u32 cpuid_apic, int index_msb);
 
-	u32	(*get_apic_id)(unsigned long x);
-	u32	(*set_apic_id)(unsigned int id);
+	u32	(*get_apic_id)(u32 id);
+	u32	(*set_apic_id)(u32 apicid);
 
 	/* wakeup_secondary_cpu */
 	int	(*wakeup_secondary_cpu)(int apicid, unsigned long start_eip);
@@ -493,16 +493,6 @@ static inline bool lapic_vector_set_in_irr(unsigned int vector)
 	return !!(irr & (1U << (vector % 32)));
 }
 
-static inline unsigned default_get_apic_id(unsigned long x)
-{
-	unsigned int ver = GET_APIC_VERSION(apic_read(APIC_LVR));
-
-	if (APIC_XAPIC(ver) || boot_cpu_has(X86_FEATURE_EXTD_APICID))
-		return (x >> 24) & 0xFF;
-	else
-		return (x >> 24) & 0x0F;
-}
-
 /*
  * Warm reset vector position:
  */

arch/x86/kernel/apic/apic_flat_64.c

@@ -56,12 +56,12 @@ flat_send_IPI_mask_allbutself(const struct cpumask *cpumask, int vector)
 	_flat_send_IPI_mask(mask, vector);
 }
 
-static unsigned int flat_get_apic_id(unsigned long x)
+static u32 flat_get_apic_id(u32 x)
 {
 	return (x >> 24) & 0xFF;
 }
 
-static u32 set_apic_id(unsigned int id)
+static u32 set_apic_id(u32 id)
 {
 	return (id & 0xFF) << 24;
 }

arch/x86/kernel/apic/apic_noop.c

@@ -30,7 +30,7 @@ static void noop_apic_icr_write(u32 low, u32 id) { }
 static int noop_wakeup_secondary_cpu(int apicid, unsigned long start_eip) { return -1; }
 static u64 noop_apic_icr_read(void) { return 0; }
 static u32 noop_phys_pkg_id(u32 cpuid_apic, int index_msb) { return 0; }
-static unsigned int noop_get_apic_id(unsigned long x) { return 0; }
+static u32 noop_get_apic_id(u32 apicid) { return 0; }
 static void noop_apic_eoi(void) { }
 
 static u32 noop_apic_read(u32 reg)

arch/x86/kernel/apic/apic_numachip.c

@@ -25,7 +25,7 @@ static const struct apic apic_numachip1;
 static const struct apic apic_numachip2;
 static void (*numachip_apic_icr_write)(int apicid, unsigned int val) __read_mostly;
 
-static unsigned int numachip1_get_apic_id(unsigned long x)
+static u32 numachip1_get_apic_id(u32 x)
 {
 	unsigned long value;
 	unsigned int id = (x >> 24) & 0xff;
@@ -38,12 +38,12 @@ static unsigned int numachip1_get_apic_id(unsigned long x)
 	return id;
 }
 
-static u32 numachip1_set_apic_id(unsigned int id)
+static u32 numachip1_set_apic_id(u32 id)
 {
 	return (id & 0xff) << 24;
 }
 
-static unsigned int numachip2_get_apic_id(unsigned long x)
+static u32 numachip2_get_apic_id(u32 x)
 {
 	u64 mcfg;
 
@@ -51,7 +51,7 @@ static unsigned int numachip2_get_apic_id(unsigned long x)
 	return ((mcfg >> (28 - 8)) & 0xfff00) | (x >> 24);
 }
 
-static u32 numachip2_set_apic_id(unsigned int id)
+static u32 numachip2_set_apic_id(u32 id)
 {
 	return id << 24;
 }

arch/x86/kernel/apic/bigsmp_32.c

@@ -13,7 +13,7 @@
 
 #include "local.h"
 
-static unsigned bigsmp_get_apic_id(unsigned long x)
+static u32 bigsmp_get_apic_id(u32 x)
 {
 	return (x >> 24) & 0xFF;
 }

arch/x86/kernel/apic/local.h

@@ -15,8 +15,8 @@
 
 /* X2APIC */
 void __x2apic_send_IPI_dest(unsigned int apicid, int vector, unsigned int dest);
-unsigned int x2apic_get_apic_id(unsigned long id);
-u32 x2apic_set_apic_id(unsigned int id);
+u32 x2apic_get_apic_id(u32 id);
+u32 x2apic_set_apic_id(u32 id);
 u32 x2apic_phys_pkg_id(u32 initial_apicid, int index_msb);
 
 void x2apic_send_IPI_all(int vector);

arch/x86/kernel/apic/probe_32.c

@@ -23,6 +23,16 @@ static u32 default_phys_pkg_id(u32 cpuid_apic, int index_msb)
 	return cpuid_apic >> index_msb;
 }
 
+static u32 default_get_apic_id(u32 x)
+{
+	unsigned int ver = GET_APIC_VERSION(apic_read(APIC_LVR));
+
+	if (APIC_XAPIC(ver) || boot_cpu_has(X86_FEATURE_EXTD_APICID))
+		return (x >> 24) & 0xFF;
+	else
+		return (x >> 24) & 0x0F;
+}
+
 /* should be called last. */
 static int probe_default(void)
 {

arch/x86/kernel/apic/x2apic_phys.c

@@ -124,12 +124,12 @@ static int x2apic_phys_probe(void)
 	return apic == &apic_x2apic_phys;
 }
 
-unsigned int x2apic_get_apic_id(unsigned long id)
+u32 x2apic_get_apic_id(u32 id)
 {
 	return id;
 }
 
-u32 x2apic_set_apic_id(unsigned int id)
+u32 x2apic_set_apic_id(u32 id)
 {
 	return id;
 }

arch/x86/kernel/apic/x2apic_uv_x.c

@@ -779,7 +779,7 @@ static void uv_send_IPI_all(int vector)
 	uv_send_IPI_mask(cpu_online_mask, vector);
 }
 
-static u32 set_apic_id(unsigned int id)
+static u32 set_apic_id(u32 id)
 {
 	return id;
 }

arch/x86/xen/apic.c

@@ -33,13 +33,13 @@ static unsigned int xen_io_apic_read(unsigned apic, unsigned reg)
 	return 0xfd;
 }
 
-static u32 xen_set_apic_id(unsigned int x)
+static u32 xen_set_apic_id(u32 x)
 {
 	WARN_ON(1);
 	return x;
 }
 
-static unsigned int xen_get_apic_id(unsigned long x)
+static u32 xen_get_apic_id(u32 x)
 {
 	return ((x)>>24) & 0xFFu;
 }