From b4ff8389ed14b849354b59ce9b360bdefcdbf99c Mon Sep 17 00:00:00 2001 From: Boris Ostrovsky Date: Fri, 20 Nov 2015 11:25:04 -0500 Subject: xen/events: Always allocate legacy interrupts on PV guests After commit 8c058b0b9c34 ("x86/irq: Probe for PIC presence before allocating descs for legacy IRQs") early_irq_init() will no longer preallocate descriptors for legacy interrupts if PIC does not exist, which is the case for Xen PV guests. Therefore we may need to allocate those descriptors ourselves. Signed-off-by: Boris Ostrovsky Suggested-by: Thomas Gleixner Signed-off-by: David Vrabel --- arch/arm/include/asm/irq.h | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'arch/arm') diff --git a/arch/arm/include/asm/irq.h b/arch/arm/include/asm/irq.h index be1d07d59ee9..1bd9510de1b9 100644 --- a/arch/arm/include/asm/irq.h +++ b/arch/arm/include/asm/irq.h @@ -40,6 +40,11 @@ extern void arch_trigger_all_cpu_backtrace(bool); #define arch_trigger_all_cpu_backtrace(x) arch_trigger_all_cpu_backtrace(x) #endif +static inline int nr_legacy_irqs(void) +{ + return NR_IRQS_LEGACY; +} + #endif #endif -- cgit v1.2.3