1. Apps in the Mac App Store can't ship their own kernel extensions along with the app. With the framework, it may not be necessary for virtualization products to do that -- enabling them to ship in the Mac App Store.
2. Compatibility breaks between OS version updates. Every time the kernel interface changes, someone shipping a kernel extension will need to ship an update as well. With this approach, it's possible to keep compatibility and let the implementation of the framework do all the heavy lifting.
3. If virtualization products are going to be in the kernel in order to run, it would be better for the host OS vendor to supply official supported interfaces instead.
Just as Intel is making it easier to do virtualization on their chips with VT-x and VT-d, Apple is making it easier to implement virtualization with Mac OS X as a host with this framework.
1. Apps in the Mac App Store can't ship their own kernel extensions along with the app. With the framework, it may not be necessary for virtualization products to do that -- enabling them to ship in the Mac App Store.
2. Compatibility breaks between OS version updates. Every time the kernel interface changes, someone shipping a kernel extension will need to ship an update as well. With this approach, it's possible to keep compatibility and let the implementation of the framework do all the heavy lifting.
3. If virtualization products are going to be in the kernel in order to run, it would be better for the host OS vendor to supply official supported interfaces instead.
Just as Intel is making it easier to do virtualization on their chips with VT-x and VT-d, Apple is making it easier to implement virtualization with Mac OS X as a host with this framework.