29 lines
988 B
Diff
29 lines
988 B
Diff
From: Ingo Molnar <mingo@elte.hu>
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Date: Fri, 3 Jul 2009 08:29:27 -0500
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Subject: x86/ioapic: Do not unmask io_apic when interrupt is in progress
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Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.4/patches-4.4-rt3.tar.xz
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With threaded interrupts we might see an interrupt in progress on
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migration. Do not unmask it when this is the case.
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Signed-off-by: Ingo Molnar <mingo@elte.hu>
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Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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---
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xXx
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arch/x86/kernel/apic/io_apic.c | 3 ++-
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1 file changed, 2 insertions(+), 1 deletion(-)
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--- a/arch/x86/kernel/apic/io_apic.c
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+++ b/arch/x86/kernel/apic/io_apic.c
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@@ -1711,7 +1711,8 @@ static bool io_apic_level_ack_pending(st
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static inline bool ioapic_irqd_mask(struct irq_data *data)
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{
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/* If we are moving the irq we need to mask it */
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- if (unlikely(irqd_is_setaffinity_pending(data))) {
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+ if (unlikely(irqd_is_setaffinity_pending(data) &&
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+ !irqd_irq_inprogress(data))) {
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mask_ioapic_irq(data);
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return true;
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}
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