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x86: clear IO_APIC before enabing apic error vector. 

4 socket quad core, 8 socket quad core will do apic ID lifting for BSP.

But io-apic regs for ExtINT still use 0 as dest.

so when we enable apic error vector in BSP, we will get one APIC error.

CPU: L1 I Cache: 64K (64 bytes/line), D cache 64K (64 bytes/line)
CPU: L2 Cache: 512K (64 bytes/line)
CPU 0/4 -> Node 0
CPU: Physical Processor ID: 1
CPU: Processor Core ID: 0
SMP alternatives: switching to UP code
ACPI: Core revision 20070126
enabled ExtINT on CPU#0
ESR value after enabling vector: 00000000, after 0000000c
APIC error on CPU0: 0c(08)
ENABLING IO-APIC IRQs
Synchronizing Arb IDs.

So move enable_IO_APIC from setup_IO_APIC into setup_local_APIC and call it
before enabling the ACPI error vector.

[ tglx: arch/x86 adaptation ]

Signed-off-by: Yinghai Lu <yinghai.lu@sun.com>
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
This commit is contained in:
Yinghai Lu 2008-01-30 13:30:39 +01:00 committed by Ingo Molnar
parent 04e1ba8521
commit 1c69524c2e
3 changed files with 13 additions and 2 deletions
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7
arch/x86/kernel/apic_64.c
View File

@ -774,6 +774,13 @@ void __cpuinit setup_local_APIC(void)
value = APIC_DM_NMI | APIC_LVT_MASKED;
apic_write(APIC_LVT1, value);
/*
* Now enable IO-APICs, actually call clear_IO_APIC
* We need clear_IO_APIC before enabling vector on BP
*/
if (!smp_processor_id() && !skip_ioapic_setup && nr_ioapics)
enable_IO_APIC();
{
unsigned oldvalue;
maxlvt = lapic_get_maxlvt();

7
arch/x86/kernel/io_apic_64.c
View File

@ -1172,7 +1172,7 @@ void __apicdebuginit print_PIC(void)
#endif /* 0 */
static void __init enable_IO_APIC(void)
void __init enable_IO_APIC(void)
{
union IO_APIC_reg_01 reg_01;
int i8259_apic, i8259_pin;
@ -1789,7 +1789,10 @@ __setup("no_timer_check", notimercheck);
void __init setup_IO_APIC(void)
{
enable_IO_APIC();
/*
* calling enable_IO_APIC() is moved to setup_local_APIC for BP
*/
if (acpi_ioapic)
io_apic_irqs = ~0; /* all IRQs go through IOAPIC */

1
include/asm-x86/hw_irq_64.h
View File

@ -135,6 +135,7 @@ extern void init_8259A(int aeoi);
extern void send_IPI_self(int vector);
extern void init_VISWS_APIC_irqs(void);
extern void setup_IO_APIC(void);
extern void enable_IO_APIC(void);
extern void disable_IO_APIC(void);
extern void print_IO_APIC(void);
extern int IO_APIC_get_PCI_irq_vector(int bus, int slot, int fn);