3 files changed, 3 insertions, 1 deletions

diff --git a/arch/x86/kvm/Kconfig b/arch/x86/kvm/Kconfig
index 939b1cb9c5b3..8cd2a4efe238 100644
--- a/arch/x86/kvm/Kconfig
+++ b/arch/x86/kvm/Kconfig
@@ -26,6 +26,7 @@ config KVM
         select MMU_NOTIFIER
         select ANON_INODES
         select HAVE_KVM_IRQCHIP
+        select HAVE_KVM_EVENTFD
         ---help---
           Support hosting fully virtualized guest machines using hardware
           virtualization extensions.  You will need a fairly recent
diff --git a/arch/x86/kvm/Makefile b/arch/x86/kvm/Makefile
index bee9512cd60d..01e3c61f749a 100644
--- a/arch/x86/kvm/Makefile
+++ b/arch/x86/kvm/Makefile
@@ -2,7 +2,7 @@
 EXTRA_CFLAGS += -Ivirt/kvm -Iarch/x86/kvm
 
 kvm-y                   += $(addprefix ../../../virt/kvm/, kvm_main.o ioapic.o \
-                                coalesced_mmio.o irq_comm.o)
+                                coalesced_mmio.o irq_comm.o eventfd.o)
 kvm-$(CONFIG_KVM_TRACE) += $(addprefix ../../../virt/kvm/, kvm_trace.o)
 kvm-$(CONFIG_IOMMU_API) += $(addprefix ../../../virt/kvm/, iommu.o)
 
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index f0642396783f..15f39fc08ece 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -1126,6 +1126,7 @@ int kvm_dev_ioctl_check_extension(long ext)
         case KVM_CAP_REINJECT_CONTROL:
         case KVM_CAP_IRQ_INJECT_STATUS:
         case KVM_CAP_ASSIGN_DEV_IRQ:
+        case KVM_CAP_IRQFD:
                 r = 1;
                 break;
         case KVM_CAP_COALESCED_MMIO: