On 01/30/20 18:10, Kinney, Michael D wrote: > 3) EDK II community defines a small number of profiles > for the PEI, DXE, SMM versions of these modules and > publishes released binaries for each profile. Platforms > integrate the published binary modules. This may > provide more services than are required for some platforms > but has the advantage of using a released binary from > the EDK II project and reducing build times. Once again, > some guidance and/or tools may be required to help the > EDK II community determine the right number of profiles > and the services enabled in each profile.
This sounds super interesting; I didn't think of it! The great property of profiles seems to be that they strike a middle ground between space savings and call safety. Namely: - let's say we define 4 profiles, - each profile comes with its own *wrapper* crypto API lib instance, - in each such lib instance, the wrapper functions for those PPI / protocol member APIs that are disabled in the PCD are *also not implemented*, thereby causing linkage failures if a module tries to use them - given that there are only 4 profiles, a platform can exhaustively test building against each, and find the smallest one that works -- and repeatably so: it's never a "bad time" to attempt building against a smaller profile! - in the smallest applicable profile, some functions might be included uselessly in the PPI / protocol providers -- but not too many. That's why we didn't pick a larger profile. And whatever is included, will be shared between consumers. This should work even without distributing the PPI / protocol providers in binary form. I think this could be a valid use case for some library instances in edk2 *not* to implement all functions from the library class header. Thanks! Laszlo -=-=-=-=-=-=-=-=-=-=-=- Groups.io Links: You receive all messages sent to this group. View/Reply Online (#53588): https://edk2.groups.io/g/devel/message/53588 Mute This Topic: https://groups.io/mt/70266459/21656 Group Owner: devel+ow...@edk2.groups.io Unsubscribe: https://edk2.groups.io/g/devel/unsub [arch...@mail-archive.com] -=-=-=-=-=-=-=-=-=-=-=-
