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* [patch 6/8] x86/platform/uv: Use apic_ack_irq()
@ 2018-06-04 15:33 Thomas Gleixner
  2018-06-05  7:13 ` Song Liu
  2018-06-06 13:33 ` [tip:x86/urgent] " tip-bot for Thomas Gleixner
  0 siblings, 2 replies; 3+ messages in thread
From: Thomas Gleixner @ 2018-06-04 15:33 UTC (permalink / raw)
  To: LKML
  Cc: Ingo Molnar, Peter Zijlstra, Borislav Petkov, Dmitry Safonov,
	Tariq Toukan, Song Liu, Joerg Roedel, Mike Travis, stable

[-- Attachment #0: x86-platform-uv--Use-apic_ack_irq.patch --]
[-- Type: text/plain, Size: 1180 bytes --]

To address the EBUSY fail of interrupt affinity settings in case that the
previous setting has not been cleaned up yet, use the new apic_ack_irq()
function instead of the special uv_ack_apic() implementation which is
merily a wrapper around ack_APIC_irq().

Preparatory change for the real fix

Fixes: dccfe3147b42 ("x86/vector: Simplify vector move cleanup")
Reported-by: Song Liu <liu.song.a23@gmail.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: stable@vger.kernel.org
---
 arch/x86/platform/uv/uv_irq.c |    7 +------
 1 file changed, 1 insertion(+), 6 deletions(-)

--- a/arch/x86/platform/uv/uv_irq.c
+++ b/arch/x86/platform/uv/uv_irq.c
@@ -47,11 +47,6 @@ static void uv_program_mmr(struct irq_cf
 
 static void uv_noop(struct irq_data *data) { }
 
-static void uv_ack_apic(struct irq_data *data)
-{
-	ack_APIC_irq();
-}
-
 static int
 uv_set_irq_affinity(struct irq_data *data, const struct cpumask *mask,
 		    bool force)
@@ -73,7 +68,7 @@ static struct irq_chip uv_irq_chip = {
 	.name			= "UV-CORE",
 	.irq_mask		= uv_noop,
 	.irq_unmask		= uv_noop,
-	.irq_eoi		= uv_ack_apic,
+	.irq_eoi		= apic_ack_irq,
 	.irq_set_affinity	= uv_set_irq_affinity,
 };
 

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2018-06-04 15:33 [patch 6/8] x86/platform/uv: Use apic_ack_irq() Thomas Gleixner
2018-06-05  7:13 ` Song Liu
2018-06-06 13:33 ` [tip:x86/urgent] " tip-bot for Thomas Gleixner

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