linux/arch/x86/kernel/apic/probe_64.c
Thomas Gleixner 2510d09e9d x86/apic/flat64: Remove the IPI shorthand decision logic
All callers of apic->send_IPI_all() and apic->send_IPI_allbutself() contain
the decision logic for shorthand invocation already and invoke
send_IPI_mask() if the prereqisites are not satisfied.

Remove the now redundant decision logic in the APIC code and the duplicate
helper in probe_64.c.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lkml.kernel.org/r/20190722105221.042964120@linutronix.de
2019-07-25 16:12:02 +02:00

55 lines
1.1 KiB
C

// SPDX-License-Identifier: GPL-2.0-only
/*
* Copyright 2004 James Cleverdon, IBM.
*
* Generic APIC sub-arch probe layer.
*
* Hacked for x86-64 by James Cleverdon from i386 architecture code by
* Martin Bligh, Andi Kleen, James Bottomley, John Stultz, and
* James Cleverdon.
*/
#include <asm/apic.h>
#include "local.h"
/*
* Check the APIC IDs in bios_cpu_apicid and choose the APIC mode.
*/
void __init default_setup_apic_routing(void)
{
struct apic **drv;
enable_IR_x2apic();
for (drv = __apicdrivers; drv < __apicdrivers_end; drv++) {
if ((*drv)->probe && (*drv)->probe()) {
if (apic != *drv) {
apic = *drv;
pr_info("Switched APIC routing to %s.\n",
apic->name);
}
break;
}
}
if (x86_platform.apic_post_init)
x86_platform.apic_post_init();
}
int __init default_acpi_madt_oem_check(char *oem_id, char *oem_table_id)
{
struct apic **drv;
for (drv = __apicdrivers; drv < __apicdrivers_end; drv++) {
if ((*drv)->acpi_madt_oem_check(oem_id, oem_table_id)) {
if (apic != *drv) {
apic = *drv;
pr_info("Setting APIC routing to %s.\n",
apic->name);
}
return 1;
}
}
return 0;
}