Now at least ARM is able to determine whether the machine has virtualization support for irqchip or not at runtime. Obviously, irqfd requires irqchip. Signed-off-by: Pavel Fedin <p.fedin@xxxxxxxxxxx> --- virt/kvm/kvm_main.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c index 7873d6d..a057d5e 100644 --- a/virt/kvm/kvm_main.c +++ b/virt/kvm/kvm_main.c @@ -2716,13 +2716,15 @@ static long kvm_vm_ioctl_check_extension_generic(struct kvm *kvm, long arg) case KVM_CAP_INTERNAL_ERROR_DATA: #ifdef CONFIG_HAVE_KVM_MSI case KVM_CAP_SIGNAL_MSI: + /* Fallthrough */ #endif + case KVM_CAP_CHECK_EXTENSION_VM: + return 1; #ifdef CONFIG_HAVE_KVM_IRQFD case KVM_CAP_IRQFD: case KVM_CAP_IRQFD_RESAMPLE: + return kvm_vm_ioctl_check_extension(kvm, KVM_CAP_IRQCHIP); #endif - case KVM_CAP_CHECK_EXTENSION_VM: - return 1; #ifdef CONFIG_HAVE_KVM_IRQ_ROUTING case KVM_CAP_IRQ_ROUTING: return KVM_MAX_IRQ_ROUTES; -- 2.4.4 _______________________________________________ kvmarm mailing list kvmarm@xxxxxxxxxxxxxxxxxxxxx https://lists.cs.columbia.edu/mailman/listinfo/kvmarm
