KVM: Give IRQFD its own separate enabling Kconfig option
Currently, the IRQFD code is conditional on CONFIG_HAVE_KVM_IRQ_ROUTING. So that we can have the IRQFD code compiled in without having the IRQ routing code, this creates a new CONFIG_HAVE_KVM_IRQFD, makes the IRQFD code conditional on it instead of CONFIG_HAVE_KVM_IRQ_ROUTING, and makes all the platforms that currently select HAVE_KVM_IRQ_ROUTING also select HAVE_KVM_IRQFD. Signed-off-by: Paul Mackerras <paulus@samba.org> Tested-by: Eric Auger <eric.auger@linaro.org> Tested-by: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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@ -25,6 +25,7 @@ config KVM
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select PREEMPT_NOTIFIERS
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select PREEMPT_NOTIFIERS
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select ANON_INODES
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select ANON_INODES
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select HAVE_KVM_IRQCHIP
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select HAVE_KVM_IRQCHIP
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select HAVE_KVM_IRQFD
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select HAVE_KVM_IRQ_ROUTING
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select HAVE_KVM_IRQ_ROUTING
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select KVM_APIC_ARCHITECTURE
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select KVM_APIC_ARCHITECTURE
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select KVM_MMIO
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select KVM_MMIO
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@ -158,6 +158,7 @@ config KVM_MPIC
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bool "KVM in-kernel MPIC emulation"
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bool "KVM in-kernel MPIC emulation"
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depends on KVM && E500
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depends on KVM && E500
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select HAVE_KVM_IRQCHIP
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select HAVE_KVM_IRQCHIP
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select HAVE_KVM_IRQFD
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select HAVE_KVM_IRQ_ROUTING
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select HAVE_KVM_IRQ_ROUTING
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select HAVE_KVM_MSI
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select HAVE_KVM_MSI
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help
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help
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@ -26,6 +26,7 @@ config KVM
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select KVM_ASYNC_PF
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select KVM_ASYNC_PF
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select KVM_ASYNC_PF_SYNC
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select KVM_ASYNC_PF_SYNC
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select HAVE_KVM_IRQCHIP
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select HAVE_KVM_IRQCHIP
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select HAVE_KVM_IRQFD
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select HAVE_KVM_IRQ_ROUTING
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select HAVE_KVM_IRQ_ROUTING
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---help---
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---help---
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Support hosting paravirtualized guest machines using the SIE
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Support hosting paravirtualized guest machines using the SIE
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@ -27,6 +27,7 @@ config KVM
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select MMU_NOTIFIER
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select MMU_NOTIFIER
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select ANON_INODES
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select ANON_INODES
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select HAVE_KVM_IRQCHIP
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select HAVE_KVM_IRQCHIP
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select HAVE_KVM_IRQFD
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select HAVE_KVM_IRQ_ROUTING
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select HAVE_KVM_IRQ_ROUTING
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select HAVE_KVM_EVENTFD
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select HAVE_KVM_EVENTFD
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select KVM_APIC_ARCHITECTURE
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select KVM_APIC_ARCHITECTURE
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@ -437,7 +437,7 @@ void kvm_vcpu_uninit(struct kvm_vcpu *vcpu);
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int __must_check vcpu_load(struct kvm_vcpu *vcpu);
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int __must_check vcpu_load(struct kvm_vcpu *vcpu);
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void vcpu_put(struct kvm_vcpu *vcpu);
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void vcpu_put(struct kvm_vcpu *vcpu);
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#ifdef CONFIG_HAVE_KVM_IRQ_ROUTING
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#ifdef CONFIG_HAVE_KVM_IRQFD
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int kvm_irqfd_init(void);
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int kvm_irqfd_init(void);
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void kvm_irqfd_exit(void);
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void kvm_irqfd_exit(void);
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#else
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#else
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@ -932,20 +932,20 @@ int kvm_set_routing_entry(struct kvm_kernel_irq_routing_entry *e,
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const struct kvm_irq_routing_entry *ue);
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const struct kvm_irq_routing_entry *ue);
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void kvm_free_irq_routing(struct kvm *kvm);
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void kvm_free_irq_routing(struct kvm *kvm);
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int kvm_send_userspace_msi(struct kvm *kvm, struct kvm_msi *msi);
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#else
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#else
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static inline void kvm_free_irq_routing(struct kvm *kvm) {}
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static inline void kvm_free_irq_routing(struct kvm *kvm) {}
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#endif
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#endif
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int kvm_send_userspace_msi(struct kvm *kvm, struct kvm_msi *msi);
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#ifdef CONFIG_HAVE_KVM_EVENTFD
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#ifdef CONFIG_HAVE_KVM_EVENTFD
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void kvm_eventfd_init(struct kvm *kvm);
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void kvm_eventfd_init(struct kvm *kvm);
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int kvm_ioeventfd(struct kvm *kvm, struct kvm_ioeventfd *args);
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int kvm_ioeventfd(struct kvm *kvm, struct kvm_ioeventfd *args);
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#ifdef CONFIG_HAVE_KVM_IRQCHIP
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#ifdef CONFIG_HAVE_KVM_IRQFD
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int kvm_irqfd(struct kvm *kvm, struct kvm_irqfd *args);
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int kvm_irqfd(struct kvm *kvm, struct kvm_irqfd *args);
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void kvm_irqfd_release(struct kvm *kvm);
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void kvm_irqfd_release(struct kvm *kvm);
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void kvm_irq_routing_update(struct kvm *);
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void kvm_irq_routing_update(struct kvm *);
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@ -6,6 +6,9 @@ config HAVE_KVM
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config HAVE_KVM_IRQCHIP
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config HAVE_KVM_IRQCHIP
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bool
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bool
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config HAVE_KVM_IRQFD
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bool
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config HAVE_KVM_IRQ_ROUTING
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config HAVE_KVM_IRQ_ROUTING
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bool
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bool
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@ -39,7 +39,7 @@
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#include "irq.h"
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#include "irq.h"
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#include "iodev.h"
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#include "iodev.h"
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#ifdef CONFIG_HAVE_KVM_IRQ_ROUTING
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#ifdef CONFIG_HAVE_KVM_IRQFD
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/*
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/*
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* --------------------------------------------------------------------
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* --------------------------------------------------------------------
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* irqfd: Allows an fd to be used to inject an interrupt to the guest
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* irqfd: Allows an fd to be used to inject an interrupt to the guest
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@ -450,7 +450,7 @@ out:
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void
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void
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kvm_eventfd_init(struct kvm *kvm)
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kvm_eventfd_init(struct kvm *kvm)
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{
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{
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#ifdef CONFIG_HAVE_KVM_IRQ_ROUTING
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#ifdef CONFIG_HAVE_KVM_IRQFD
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spin_lock_init(&kvm->irqfds.lock);
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spin_lock_init(&kvm->irqfds.lock);
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INIT_LIST_HEAD(&kvm->irqfds.items);
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INIT_LIST_HEAD(&kvm->irqfds.items);
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INIT_LIST_HEAD(&kvm->irqfds.resampler_list);
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INIT_LIST_HEAD(&kvm->irqfds.resampler_list);
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@ -459,7 +459,7 @@ kvm_eventfd_init(struct kvm *kvm)
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INIT_LIST_HEAD(&kvm->ioeventfds);
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INIT_LIST_HEAD(&kvm->ioeventfds);
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}
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}
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#ifdef CONFIG_HAVE_KVM_IRQ_ROUTING
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#ifdef CONFIG_HAVE_KVM_IRQFD
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/*
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/*
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* shutdown any irqfd's that match fd+gsi
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* shutdown any irqfd's that match fd+gsi
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*/
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*/
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@ -2337,7 +2337,7 @@ static long kvm_vm_ioctl_check_extension_generic(struct kvm *kvm, long arg)
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#ifdef CONFIG_HAVE_KVM_MSI
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#ifdef CONFIG_HAVE_KVM_MSI
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case KVM_CAP_SIGNAL_MSI:
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case KVM_CAP_SIGNAL_MSI:
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#endif
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#endif
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#ifdef CONFIG_HAVE_KVM_IRQ_ROUTING
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#ifdef CONFIG_HAVE_KVM_IRQFD
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case KVM_CAP_IRQFD_RESAMPLE:
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case KVM_CAP_IRQFD_RESAMPLE:
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#endif
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#endif
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case KVM_CAP_CHECK_EXTENSION_VM:
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case KVM_CAP_CHECK_EXTENSION_VM:
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