Mihai Parparita 13ccd42e16 ppcmmu: Track translated entries for invalidation ...

XNU frequently changes BAT and PAT mappings for physical-memory access.
Each  resulting context synchronization can walk tens of thousands of TLB
entries, which consumes a lot of time.

Record the instruction and data TLB slots populated by BAT or PAT and
invalidate only those slots. Pending invalidations are coalesced by source,
and BAT updates cover PAT-derived entries because a new BAT can shadow a page
mapping.

Saves another 0.7 secondss in the time it takes to boot Mac OS X 10.3 to
the WindowServer (compared to the generational PAT invalidation).

2026-08-20 22:54:26 -07:00

..

developers

ppcmmu: Track translated entries for invalidation

2026-08-20 22:54:26 -07:00

users

Tweak the manual

2026-08-09 08:08:44 -07:00