Commit a65d1d64 authored by Jack Steiner's avatar Jack Steiner Committed by Ingo Molnar
Browse files

x86: increase size of APICID 



Increase the number of bits in an apicid from 8 to 32.

By default, MP_processor_info() gets the APICID from the
mpc_config_processor structure. However, this structure limits
the size of APICID to 8 bits. This patch allows the caller of
MP_processor_info() to optionally pass a larger APICID that will
be used instead of the one in the mpc_config_processor struct.

Signed-off-by: default avatarJack Steiner <steiner@sgi.com>
Signed-off-by: default avatarIngo Molnar <mingo@elte.hu>
parent ae261868

arch/x86/kernel/mpparse_32.c

+2 −2
Original line number Diff line number Diff line
@@ -807,7 +807,7 @@ void __init mp_register_lapic_address(u64 address) 
	Dprintk("Boot CPU = %d\n", boot_cpu_physical_apicid);

}



void __cpuinit mp_register_lapic (u8 id, u8 enabled)

void __cpuinit mp_register_lapic (int id, u8 enabled)

{

	if (MAX_APICS - id <= 0) {

		printk(KERN_WARNING "Processor #%d invalid (max %d)\n",
@@ -862,7 +862,7 @@ static u8 uniq_ioapic_id(u8 id) 
		return id;

}



void __init mp_register_ioapic(u8 id, u32 address, u32 gsi_base)

void __init mp_register_ioapic(int id, u32 address, u32 gsi_base)

{

	int idx = 0;

arch/x86/kernel/mpparse_64.c

+2 −2
Original line number Diff line number Diff line
@@ -633,7 +633,7 @@ void __init mp_register_lapic_address(u64 address) 
	if (boot_cpu_physical_apicid == -1U)

		boot_cpu_physical_apicid  = GET_APIC_ID(read_apic_id());

}

void __cpuinit mp_register_lapic(u8 id, u8 enabled)

void __cpuinit mp_register_lapic(int id, u8 enabled)

{

	if (!enabled) {

		++disabled_cpus;
@@ -683,7 +683,7 @@ static u8 uniq_ioapic_id(u8 id) 
	return find_first_zero_bit(used, 256);

}



void __init mp_register_ioapic(u8 id, u32 address, u32 gsi_base)

void __init mp_register_ioapic(int id, u32 address, u32 gsi_base)

{

	int idx = 0;

arch/x86/mm/srat_64.c

+5 −1
Original line number Diff line number Diff line
@@ -20,6 +20,7 @@ 
#include <asm/proto.h>

#include <asm/numa.h>

#include <asm/e820.h>

#include <asm/genapic.h>



int acpi_numa __initdata;
@@ -148,6 +149,9 @@ acpi_numa_processor_affinity_init(struct acpi_srat_cpu_affinity *pa) 
		return;

	}



	if (is_uv_system())

		apic_id = (pa->apic_id << 8) | pa->local_sapic_eid;

	else

		apic_id = pa->apic_id;

	apicid_to_node[apic_id] = node;

	acpi_numa = 1;

include/asm-x86/apicdef.h

+6 −3
Original line number Diff line number Diff line
@@ -133,7 +133,7 @@ 
# define MAX_IO_APICS 64

#else

# define MAX_IO_APICS 128

# define MAX_LOCAL_APIC 256

# define MAX_LOCAL_APIC 32768

#endif



/*
@@ -406,6 +406,9 @@ struct local_apic { 


#undef u32



#ifdef CONFIG_X86_32

 #define BAD_APICID 0xFFu



#else

 #define BAD_APICID 0xFFFFu

#endif

#endif

include/asm-x86/mpspec.h

+2 −2
Original line number Diff line number Diff line
@@ -47,9 +47,9 @@ extern void get_smp_config(void); 


void __cpuinit generic_processor_info(int apicid, int version);

#ifdef CONFIG_ACPI

extern void mp_register_lapic(u8 id, u8 enabled);

extern void mp_register_lapic(int id, u8 enabled);

extern void mp_register_lapic_address(u64 address);

extern void mp_register_ioapic(u8 id, u32 address, u32 gsi_base);

extern void mp_register_ioapic(int id, u32 address, u32 gsi_base);

extern void mp_override_legacy_irq(u8 bus_irq, u8 polarity, u8 trigger,

				   u32 gsi);

extern void mp_config_acpi_legacy_irqs(void);

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