1 files changed, 4 insertions, 0 deletions

diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index fc2a0a132e4b..7d44204c6041 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -2176,6 +2176,7 @@ int kvm_dev_ioctl_check_extension(long ext)
         case KVM_CAP_PCI_2_3:
         case KVM_CAP_KVMCLOCK_CTRL:
         case KVM_CAP_READONLY_MEM:
+        case KVM_CAP_IRQFD_RESAMPLE:
                 r = 1;
                 break;
         case KVM_CAP_COALESCED_MMIO:
@@ -6268,6 +6269,9 @@ int kvm_arch_init_vm(struct kvm *kvm, unsigned long type)
 
         /* Reserve bit 0 of irq_sources_bitmap for userspace irq source */
         set_bit(KVM_USERSPACE_IRQ_SOURCE_ID, &kvm->arch.irq_sources_bitmap);
+        /* Reserve bit 1 of irq_sources_bitmap for irqfd-resampler */
+        set_bit(KVM_IRQFD_RESAMPLE_IRQ_SOURCE_ID,
+                &kvm->arch.irq_sources_bitmap);
 
         raw_spin_lock_init(&kvm->arch.tsc_write_lock);
         mutex_init(&kvm->arch.apic_map_lock);