This patch introduces
- kvm_arch_irq_bypass_add_producer
- kvm_arch_irq_bypass_del_producer
- kvm_arch_irq_bypass_stop
- kvm_arch_irq_bypass_resume
- kvm_arch_irq_bypass_update
They make possible to specialize the KVM IRQ bypass consumer in
case CONFIG_KVM_HAVE_IRQ_BYPASS is set.
Signed-off-by: Eric Auger <eric.auger@xxxxxxxxxx>
---
v1 -> v2:
- use CONFIG_KVM_HAVE_IRQ_BYPASS instead CONFIG_IRQ_BYPASS_MANAGER
- rename all functions according to Paolo's proposal
- add kvm_arch_irq_bypass_update according to Feng's need
---
include/linux/kvm_host.h | 37 +++++++++++++++++++++++++++++++++++++
virt/kvm/Kconfig | 3 +++
2 files changed, 40 insertions(+)
diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h
index 9564fd7..91a5734 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 +1134,41 @@ static inline void kvm_vcpu_set_dy_eligible(struct kvm_vcpu *vcpu, bool val)
{
}
#endif /* CONFIG_HAVE_KVM_CPU_RELAX_INTERCEPT */
+
+#ifdef CONFIG_HAVE_KVM_IRQ_BYPASS
+
+void kvm_arch_irq_bypass_add_producer(struct irq_bypass_consumer *,
+ struct irq_bypass_producer *);
+void kvm_arch_irq_bypass_del_producer(struct irq_bypass_consumer *,
+ struct irq_bypass_producer *);
+void kvm_arch_irq_bypass_stop(struct irq_bypass_consumer *);
+void kvm_arch_irq_bypass_resume(struct irq_bypass_consumer *);
+void kvm_arch_irq_bypass_update(struct irq_bypass_consumer *);
+
+#else
+
+static inline void kvm_arch_irq_bypass_add_producer(
+ struct irq_bypass_consumer *cons,
+ struct irq_bypass_producer *prod)
+{
+}
+static inline void kvm_arch_irq_bypass_del_producer(
+ struct irq_bypass_consumer *cons,
+ struct irq_bypass_producer *prod)
+{
+}
+static inline void kvm_arch_irq_bypass_stop(
+ struct irq_bypass_consumer *cons)
+{
+}
+static inline void kvm_arch_irq_bypass_resume(
+ struct irq_bypass_consumer *cons)
+{
+}
+static inline void kvm_arch_irq_bypass_update(
+ struct irq_bypass_consumer *cons)
+{
+}
+#endif /* CONFIG_HAVE_KVM_IRQ_BYPASS */
#endif
diff --git a/virt/kvm/Kconfig b/virt/kvm/Kconfig
index e2c876d..9f8014d 100644
--- a/virt/kvm/Kconfig
+++ b/virt/kvm/Kconfig
@@ -47,3 +47,6 @@ config KVM_GENERIC_DIRTYLOG_READ_PROTECT
config KVM_COMPAT
def_bool y
depends on COMPAT && !S390
+
+config HAVE_KVM_IRQ_BYPASS
+ bool
--
1.9.1
--
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