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Commit 9b7711f0 authored by Hiroshi Shimamoto's avatar Hiroshi Shimamoto Committed by Thomas Gleixner
Browse files

x86: add lapic_shutdown for x86_64 



Preperatory patch to allow crash_32/64.c merging

Signed-off-by: default avatarHiroshi Shimamoto <h-shimamoto@ct.jp.nec.com>
Signed-off-by: default avatarIngo Molnar <mingo@elte.hu>
Signed-off-by: default avatarThomas Gleixner <tglx@linutronix.de>
parent 70353023

arch/x86/kernel/apic_64.c

+14 −0
Original line number Diff line number Diff line
@@ -287,6 +287,20 @@ void disable_local_APIC(void) 
	apic_write(APIC_SPIV, value);

}



void lapic_shutdown(void)

{

	unsigned long flags;



	if (!cpu_has_apic)

		return;



	local_irq_save(flags);



	disable_local_APIC();



	local_irq_restore(flags);

}



/*

 * This is to verify that we're looking at a real local APIC.

 * Check these against your board if the CPUs aren't getting

include/asm-x86/apic_64.h

+1 −0
Original line number Diff line number Diff line
@@ -69,6 +69,7 @@ extern void clear_local_APIC (void); 
extern void connect_bsp_APIC (void);

extern void disconnect_bsp_APIC (int virt_wire_setup);

extern void disable_local_APIC (void);

extern void lapic_shutdown (void);

extern int verify_local_APIC (void);

extern void cache_APIC_registers (void);

extern void sync_Arb_IDs (void);