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// SPDX-License-Identifier: GPL-2.0-only
#define pr_fmt(fmt) "APIC: " fmt
#include <asm/apic.h>
#include "local.h"
void __init apic_install_driver(struct apic *driver)
{
if (apic == driver)
return;
apic = driver;
if (IS_ENABLED(CONFIG_X86_X2APIC) && apic->x2apic_set_max_apicid)
apic->max_apic_id = x2apic_max_apicid;
pr_info("Switched APIC routing to: %s\n", driver->name);
}
#ifdef CONFIG_X86_64
void __init acpi_wake_cpu_handler_update(wakeup_cpu_handler handler)
{
struct apic **drv;
for (drv = __apicdrivers; drv < __apicdrivers_end; drv++)
(*drv)->wakeup_secondary_cpu_64 = handler;
}
#endif
/*
* Override the generic EOI implementation with an optimized version.
* Only called during early boot when only one CPU is active and with
* interrupts disabled, so we know this does not race with actual APIC driver
* use.
*/
void __init apic_set_eoi_cb(void (*eoi)(void))
{
struct apic **drv;
for (drv = __apicdrivers; drv < __apicdrivers_end; drv++) {
/* Should happen once for each apic */
WARN_ON((*drv)->eoi == eoi);
(*drv)->native_eoi = (*drv)->eoi;
(*drv)->eoi = eoi;
}
}
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