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Commit 7b6ce46c authored by Linus Torvalds's avatar Linus Torvalds Committed by Thomas Gleixner
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x86/apic: Implement single target IPI function for x2apic_cluster 



[ tglx: Split it out from the patch which provides the new callback ]

Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
Reviewed-by: default avatarIngo Molnar <mingo@kernel.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Mike Travis <travis@sgi.com>
Cc: Daniel J Blueman <daniel@numascale.com>
Link: http://lkml.kernel.org/r/20151104220848.817975597@linutronix.de


Signed-off-by: default avatarThomas Gleixner <tglx@linutronix.de>
parent 539da787

arch/x86/kernel/apic/x2apic_cluster.c

+9 −0
Original line number Diff line number Diff line
@@ -23,6 +23,14 @@ static inline u32 x2apic_cluster(int cpu) 
	return per_cpu(x86_cpu_to_logical_apicid, cpu) >> 16;

}



static void x2apic_send_IPI(int cpu, int vector)

{

	u32 dest = per_cpu(x86_cpu_to_logical_apicid, cpu);



	x2apic_wrmsr_fence();

	__x2apic_send_IPI_dest(dest, vector, APIC_DEST_LOGICAL);

}



static void

__x2apic_send_IPI_mask(const struct cpumask *mask, int vector, int apic_dest)

{
@@ -266,6 +274,7 @@ static struct apic apic_x2apic_cluster = { 


	.cpu_mask_to_apicid_and		= x2apic_cpu_mask_to_apicid_and,



	.send_IPI			= x2apic_send_IPI,

	.send_IPI_mask			= x2apic_send_IPI_mask,

	.send_IPI_mask_allbutself	= x2apic_send_IPI_mask_allbutself,

	.send_IPI_allbutself		= x2apic_send_IPI_allbutself,