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authorPaolo Bonzini <pbonzini@redhat.com>2014-08-06 14:24:45 +0200
committerChristoffer Dall <christoffer.dall@linaro.org>2014-10-02 17:19:10 +0200
commit57f984d2c64c8c1e597d021567a379f4f3920b35 (patch)
tree9fc949148661605afafeb9ebd67cd27a64981608 /virt
parentf65b953a7232ae8bb497b226363629f9e49b4792 (diff)
downloadlinux-linaro-stable-57f984d2c64c8c1e597d021567a379f4f3920b35.tar.gz
KVM: Move more code under CONFIG_HAVE_KVM_IRQFD
Commits e4d57e1ee1ab (KVM: Move irq notifier implementation into eventfd.c, 2014-06-30) included the irq notifier code unconditionally in eventfd.c, while it was under CONFIG_HAVE_KVM_IRQCHIP before. Similarly, commit 297e21053a52 (KVM: Give IRQFD its own separate enabling Kconfig option, 2014-06-30) moved code from CONFIG_HAVE_IRQ_ROUTING to CONFIG_HAVE_KVM_IRQFD but forgot to move the pieces that used to be under CONFIG_HAVE_KVM_IRQCHIP. Together, this broke compilation without CONFIG_KVM_XICS. Fix by adding or changing the #ifdefs so that they point at CONFIG_HAVE_KVM_IRQFD. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> (cherry picked from commit c77dcacb397519b6ade8f08201a4a90a7f4f751e) Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
Diffstat (limited to 'virt')
-rw-r--r--virt/kvm/eventfd.c122
-rw-r--r--virt/kvm/kvm_main.c2
2 files changed, 63 insertions, 61 deletions
diff --git a/virt/kvm/eventfd.c b/virt/kvm/eventfd.c
index 8be5b6545770..67563284f7b9 100644
--- a/virt/kvm/eventfd.c
+++ b/virt/kvm/eventfd.c
@@ -445,6 +445,67 @@ fail:
kfree(irqfd);
return ret;
}
+
+bool kvm_irq_has_notifier(struct kvm *kvm, unsigned irqchip, unsigned pin)
+{
+ struct kvm_irq_ack_notifier *kian;
+ int gsi, idx;
+
+ idx = srcu_read_lock(&kvm->irq_srcu);
+ gsi = kvm_irq_map_chip_pin(kvm, irqchip, pin);
+ if (gsi != -1)
+ hlist_for_each_entry_rcu(kian, &kvm->irq_ack_notifier_list,
+ link)
+ if (kian->gsi == gsi) {
+ srcu_read_unlock(&kvm->irq_srcu, idx);
+ return true;
+ }
+
+ srcu_read_unlock(&kvm->irq_srcu, idx);
+
+ return false;
+}
+EXPORT_SYMBOL_GPL(kvm_irq_has_notifier);
+
+void kvm_notify_acked_irq(struct kvm *kvm, unsigned irqchip, unsigned pin)
+{
+ struct kvm_irq_ack_notifier *kian;
+ int gsi, idx;
+
+ trace_kvm_ack_irq(irqchip, pin);
+
+ idx = srcu_read_lock(&kvm->irq_srcu);
+ gsi = kvm_irq_map_chip_pin(kvm, irqchip, pin);
+ if (gsi != -1)
+ hlist_for_each_entry_rcu(kian, &kvm->irq_ack_notifier_list,
+ link)
+ if (kian->gsi == gsi)
+ kian->irq_acked(kian);
+ srcu_read_unlock(&kvm->irq_srcu, idx);
+}
+
+void kvm_register_irq_ack_notifier(struct kvm *kvm,
+ struct kvm_irq_ack_notifier *kian)
+{
+ mutex_lock(&kvm->irq_lock);
+ hlist_add_head_rcu(&kian->link, &kvm->irq_ack_notifier_list);
+ mutex_unlock(&kvm->irq_lock);
+#ifdef __KVM_HAVE_IOAPIC
+ kvm_vcpu_request_scan_ioapic(kvm);
+#endif
+}
+
+void kvm_unregister_irq_ack_notifier(struct kvm *kvm,
+ struct kvm_irq_ack_notifier *kian)
+{
+ mutex_lock(&kvm->irq_lock);
+ hlist_del_init_rcu(&kian->link);
+ mutex_unlock(&kvm->irq_lock);
+ synchronize_srcu(&kvm->irq_srcu);
+#ifdef __KVM_HAVE_IOAPIC
+ kvm_vcpu_request_scan_ioapic(kvm);
+#endif
+}
#endif
void
@@ -832,64 +893,3 @@ kvm_ioeventfd(struct kvm *kvm, struct kvm_ioeventfd *args)
return kvm_assign_ioeventfd(kvm, args);
}
-
-bool kvm_irq_has_notifier(struct kvm *kvm, unsigned irqchip, unsigned pin)
-{
- struct kvm_irq_ack_notifier *kian;
- int gsi, idx;
-
- idx = srcu_read_lock(&kvm->irq_srcu);
- gsi = kvm_irq_map_chip_pin(kvm, irqchip, pin);
- if (gsi != -1)
- hlist_for_each_entry_rcu(kian, &kvm->irq_ack_notifier_list,
- link)
- if (kian->gsi == gsi) {
- srcu_read_unlock(&kvm->irq_srcu, idx);
- return true;
- }
-
- srcu_read_unlock(&kvm->irq_srcu, idx);
-
- return false;
-}
-EXPORT_SYMBOL_GPL(kvm_irq_has_notifier);
-
-void kvm_notify_acked_irq(struct kvm *kvm, unsigned irqchip, unsigned pin)
-{
- struct kvm_irq_ack_notifier *kian;
- int gsi, idx;
-
- trace_kvm_ack_irq(irqchip, pin);
-
- idx = srcu_read_lock(&kvm->irq_srcu);
- gsi = kvm_irq_map_chip_pin(kvm, irqchip, pin);
- if (gsi != -1)
- hlist_for_each_entry_rcu(kian, &kvm->irq_ack_notifier_list,
- link)
- if (kian->gsi == gsi)
- kian->irq_acked(kian);
- srcu_read_unlock(&kvm->irq_srcu, idx);
-}
-
-void kvm_register_irq_ack_notifier(struct kvm *kvm,
- struct kvm_irq_ack_notifier *kian)
-{
- mutex_lock(&kvm->irq_lock);
- hlist_add_head_rcu(&kian->link, &kvm->irq_ack_notifier_list);
- mutex_unlock(&kvm->irq_lock);
-#ifdef __KVM_HAVE_IOAPIC
- kvm_vcpu_request_scan_ioapic(kvm);
-#endif
-}
-
-void kvm_unregister_irq_ack_notifier(struct kvm *kvm,
- struct kvm_irq_ack_notifier *kian)
-{
- mutex_lock(&kvm->irq_lock);
- hlist_del_init_rcu(&kian->link);
- mutex_unlock(&kvm->irq_lock);
- synchronize_srcu(&kvm->irq_srcu);
-#ifdef __KVM_HAVE_IOAPIC
- kvm_vcpu_request_scan_ioapic(kvm);
-#endif
-}
diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c
index 848a6afab165..50f947301fa7 100644
--- a/virt/kvm/kvm_main.c
+++ b/virt/kvm/kvm_main.c
@@ -464,6 +464,8 @@ static struct kvm *kvm_create_vm(unsigned long type)
#ifdef CONFIG_HAVE_KVM_IRQCHIP
INIT_HLIST_HEAD(&kvm->mask_notifier_list);
+#endif
+#ifdef CONFIG_HAVE_KVM_IRQFD
INIT_HLIST_HEAD(&kvm->irq_ack_notifier_list);
#endif