On Fri, Mar 14, 2025 at 10:28:09AM -0700, Boqun Feng wrote: > On Fri, Mar 14, 2025 at 05:09:03PM +0100, Danilo Krummrich wrote: > > Currently, when sharing references of bus devices (e.g. ARef<pci::Device>), we > > do not have a way to restrict which functions of a bus device can be called. > > > > Consequently, it is possible to call all bus device functions concurrently from > > any context. This includes functions, which access fields of the (bus) device, > > which are not protected against concurrent access. > > > > This is improved by applying an execution context to the bus device in form of a > > generic type. > > > > For instance, the PCI device reference that is passed to probe() has the type > > pci::Device<Core>, which implements all functions that are only allowed to be > > called from bus callbacks. > > > > The implementation for the default context (pci::Device) contains all functions > > that are safe to call from any context concurrently. > > > > The context types can be extended as required, e.g. to limit availability of > > certain (bus) device functions to probe(). > > > > A branch containing the patches can be found in [1]. > > > > [1] https://web.git.kernel.org/pub/scm/linux/kernel/git/dakr/linux.git/log/?h=rust/device > > > > Again, > > Acked-by: Boqun Feng <boqun.feng@xxxxxxxxx> Sorry, I forgot to add your ACKs. Thanks for providing it again!
