56d5238825
Summary: Revert the initial FBT-with-KDB changes for trap_subr*.S, and instead use the db_trap filter function to handle dtrace trap filtering. With this, the MMU is enabled by the support code, simplifying the codepath altogether. Test Plan: Tested on my G4 PowerBook Reviewers: #powerpc, nwhitehorn Reviewed By: nwhitehorn Differential Revision: https://reviews.freebsd.org/D1207 MFC after: 3 weeks