On Tue, Nov 01, 2022 at 02:19:04AM -0700, Nicolin Chen wrote: > On Tue, Nov 01, 2022 at 08:09:52AM +0000, Tian, Kevin wrote: > > > > From: Jason Gunthorpe <jgg@xxxxxxxxxx> > > > Sent: Wednesday, October 26, 2022 2:51 AM > > > > > > menuconfig VFIO > > > tristate "VFIO Non-Privileged userspace driver framework" > > > select IOMMU_API > > > + depends on IOMMUFD || !IOMMUFD > > > > Out of curiosity. What is the meaning of this dependency claim? > > "is it a module or not" -- from https://lwn.net/Articles/683476/ Yes, it is the kconfig pattern for "This symbol optionally uses the other symbol, and if the other symbol is turned on then it has to be the right y/m value" ie rejects vfio being built-in but iommufd being a module Jason
