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> --- This has to be verified with PowerPC and S390 maintainers. I've got an impression that KVM_CAP_IRQCHIP is forgotten on these architectures (their KConfig selects HAVE_KVM_IRQCHIP but KVM_CAP_IRQCHIP is not mentioned anywhere in the respective code). --- virt/kvm/kvm_main.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c index 9097741..7b49618 100644 --- a/virt/kvm/kvm_main.c +++ b/virt/kvm/kvm_main.c @@ -2478,12 +2478,13 @@ static long kvm_vm_ioctl_check_extension_generic(struct kvm *kvm, long arg) #ifdef CONFIG_HAVE_KVM_MSI case KVM_CAP_SIGNAL_MSI: #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 -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
