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yaml
---
r: 116475
b: refs/heads/master
c: 49899ea
h: refs/heads/master
i:
  116473: 3367691
  116471: 3ad920f
v: v3
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Yinghai Lu authored and Ingo Molnar committed Oct 16, 2008
1 parent 2451b1d commit c34eb89
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Showing 2 changed files with 24 additions and 13 deletions.
2 changes: 1 addition & 1 deletion [refs]
Original file line number Diff line number Diff line change
@@ -1,2 +1,2 @@
---
refs/heads/master: b3c5117050e8028d48b2fa0ea09c7a50dd7f3414
refs/heads/master: 49899eacce79ce39faf531dad3e00f771eba2eb1
35 changes: 23 additions & 12 deletions trunk/arch/x86/kernel/apic_64.c
Original file line number Diff line number Diff line change
Expand Up @@ -82,10 +82,23 @@ static __init int setup_apicpmtimer(char *s)
__setup("apicpmtimer", setup_apicpmtimer);
#endif

int disable_x2apic;
#ifdef CONFIG_X86_64
#define HAVE_X2APIC
#endif

#ifdef HAVE_X2APIC
int x2apic;
/* x2apic enabled before OS handover */
int x2apic_preenabled;
int disable_x2apic;
static __init int setup_nox2apic(char *str)
{
disable_x2apic = 1;
setup_clear_cpu_cap(X86_FEATURE_X2APIC);
return 0;
}
early_param("nox2apic", setup_nox2apic);
#endif

unsigned long mp_lapic_addr;
int disable_apic;
Expand Down Expand Up @@ -228,6 +241,7 @@ static struct apic_ops xapic_ops = {
struct apic_ops __read_mostly *apic_ops = &xapic_ops;
EXPORT_SYMBOL_GPL(apic_ops);

#ifdef HAVE_X2APIC
static void x2apic_wait_icr_idle(void)
{
/* no need to wait for icr idle in x2apic */
Expand Down Expand Up @@ -261,6 +275,7 @@ static struct apic_ops x2apic_ops = {
.wait_icr_idle = x2apic_wait_icr_idle,
.safe_wait_icr_idle = safe_x2apic_wait_icr_idle,
};
#endif

/**
* enable_NMI_through_LVT0 - enable NMI through local vector table 0
Expand Down Expand Up @@ -1125,6 +1140,7 @@ void __cpuinit end_local_APIC_setup(void)
apic_pm_activate();
}

#ifdef HAVE_X2APIC
void check_x2apic(void)
{
int msr, msr2;
Expand Down Expand Up @@ -1243,6 +1259,7 @@ void enable_IR_x2apic(void)

return;
}
#endif /* HAVE_X2APIC */

/*
* Detect and enable local APICs on non-SMP boards.
Expand Down Expand Up @@ -1291,10 +1308,12 @@ void __init early_init_lapic_mapping(void)
*/
void __init init_apic_mappings(void)
{
#ifdef HAVE_X2APIC
if (x2apic) {
boot_cpu_physical_apicid = read_apic_id();
return;
}
#endif

/*
* If no local APIC can be found then set up a fake all
Expand Down Expand Up @@ -1335,8 +1354,9 @@ int __init APIC_init_uniprocessor(void)
printk(KERN_INFO "Apic disabled by BIOS\n");
return -1;
}

#ifdef HAVE_X2APIC
enable_IR_x2apic();
#endif
setup_apic_routing();

verify_local_APIC();
Expand Down Expand Up @@ -1672,7 +1692,7 @@ static int lapic_resume(struct sys_device *dev)

local_irq_save(flags);

#ifdef CONFIG_X86_64
#ifdef HAVE_X2APIC
if (x2apic)
enable_x2apic();
else
Expand Down Expand Up @@ -1836,15 +1856,6 @@ __cpuinit int apic_is_clustered_box(void)
return (clusters > 2);
}

static __init int setup_nox2apic(char *str)
{
disable_x2apic = 1;
clear_cpu_cap(&boot_cpu_data, X86_FEATURE_X2APIC);
return 0;
}
early_param("nox2apic", setup_nox2apic);


/*
* APIC command line parameters
*/
Expand Down

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