linux-kernel - [RFC 13/17] KVM: introduce kvm

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Date:	Thu,  2 Jul 2015 15:17:23 +0200
From:	Eric Auger <eric.auger@...aro.org>
To:	eric.auger@...com, eric.auger@...aro.org,
	linux-arm-kernel@...ts.infradead.org, kvmarm@...ts.cs.columbia.edu,
	kvm@...r.kernel.org, christoffer.dall@...aro.org,
	marc.zyngier@....com, alex.williamson@...hat.com,
	pbonzini@...hat.com, avi.kivity@...il.com, mtosatti@...hat.com,
	feng.wu@...el.com, joro@...tes.org, b.reynal@...tualopensystems.com
Cc:	linux-kernel@...r.kernel.org, patches@...aro.org
Subject: [RFC 13/17] KVM: introduce kvm_arch functions for IRQ bypass

This patch introduces
- kvm_arch_add_producer
- kvm_arch_del_producer
- kvm_arch_stop_consumer
- kvm_arch_resume_consumer

They make possible to specialize the KVM IRQ bypass consumer.

Signed-off-by: Eric Auger <eric.auger@...aro.org>
---
 include/linux/kvm_host.h | 27 +++++++++++++++++++++++++++
 1 file changed, 27 insertions(+)

diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h
index 9564fd7..8e981e9 100644
--- a/include/linux/kvm_host.h
+++ b/include/linux/kvm_host.h
@@ -24,6 +24,7 @@
 #include <linux/err.h>
 #include <linux/irqflags.h>
 #include <linux/context_tracking.h>
+#include <linux/irqbypass.h>
 #include <asm/signal.h>
 
 #include <linux/kvm.h>
@@ -1133,5 +1134,31 @@ static inline void kvm_vcpu_set_dy_eligible(struct kvm_vcpu *vcpu, bool val)
 {
 }
 #endif /* CONFIG_HAVE_KVM_CPU_RELAX_INTERCEPT */
+
+#ifdef CONFIG_IRQ_BYPASS_MANAGER
+
+void kvm_arch_add_producer(struct irq_bypass_consumer *,
+			   struct irq_bypass_producer *);
+void kvm_arch_del_producer(struct irq_bypass_consumer *,
+			   struct irq_bypass_producer *);
+void kvm_arch_stop_consumer(struct irq_bypass_consumer *);
+void kvm_arch_resume_consumer(struct irq_bypass_consumer *);
+
+#else
+void kvm_arch_add_producer(struct irq_bypass_consumer *,
+			   struct irq_bypass_producer *)
+{
+}
+void kvm_arch_del_producer(struct irq_bypass_consumer *,
+			   struct irq_bypass_producer *)
+{
+}
+void kvm_arch_stop_consumer(struct irq_bypass_consumer *)
+{
+}
+void kvm_arch_resume_consumer(struct irq_bypass_consumer *)
+{
+}
+#endif /* CONFIG_IRQ_BYPASS_MANAGER */
 #endif
 
-- 
1.9.1

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