A question about "CONFIG_KVM_DEVICE_ASSIGNMENT" configuration

[Nan Xiao <xiaonan830818@xxxxxxxxx>]

Hi all,

When building kernel, it prompts "CONFIG_KVM_DEVICE_ASSIGNMENT" is "deprecated".
But it is still used in kernel code. E.g.:
"kvm_vm_ioctl_check_extension" function:
{
    ...
#ifdef CONFIG_KVM_DEVICE_ASSIGNMENT
case KVM_CAP_ASSIGN_DEV_IRQ:
case KVM_CAP_PCI_2_3:
#endif
r = 1;
break;
   ...
#ifdef CONFIG_KVM_DEVICE_ASSIGNMENT
case KVM_CAP_IOMMU:
r = iommu_present(&pci_bus_type);
break;
#endif
   ...
}

If not configure this option, the following code will execute failed:

    ret = ioctl(dev, KVM_CHECK_EXTENSION, KVM_CAP_IOMMU);

So does it mean to use KVM assigned device feature, the
"CONFIG_KVM_DEVICE_ASSIGNMENT"
is not "deprecated"?

Thanks very much in advance!
Best Regards
Nan Xiao
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