3af1e415e4
In preparation for converting the hotpath APIC callbacks to static keys, provide common initialization infrastructure. Lift apic_install_drivers() from probe_64.c and convert all places which switch the apic instance by storing the pointer to use apic_install_driver() as a first step. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com> Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org> Tested-by: Michael Kelley <mikelley@microsoft.com> Tested-by: Sohil Mehta <sohil.mehta@intel.com> Tested-by: Juergen Gross <jgross@suse.com> # Xen PV (dom0 and unpriv. guest)
42 lines
914 B
C
42 lines
914 B
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* Copyright 2004 James Cleverdon, IBM.
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*
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* Generic APIC sub-arch probe layer.
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*
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* Hacked for x86-64 by James Cleverdon from i386 architecture code by
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* Martin Bligh, Andi Kleen, James Bottomley, John Stultz, and
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* James Cleverdon.
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*/
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#include <linux/thread_info.h>
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#include <asm/apic.h>
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#include "local.h"
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/* Select the appropriate APIC driver */
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void __init x86_64_probe_apic(void)
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{
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struct apic **drv;
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enable_IR_x2apic();
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for (drv = __apicdrivers; drv < __apicdrivers_end; drv++) {
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if ((*drv)->probe && (*drv)->probe()) {
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apic_install_driver(*drv);
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break;
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}
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}
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}
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int __init default_acpi_madt_oem_check(char *oem_id, char *oem_table_id)
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{
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struct apic **drv;
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for (drv = __apicdrivers; drv < __apicdrivers_end; drv++) {
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if ((*drv)->acpi_madt_oem_check(oem_id, oem_table_id)) {
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apic_install_driver(*drv);
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return 1;
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}
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}
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return 0;
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}
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