arm64 pmap: optimize TLB management by pmap_update_entry()HEADmain

To date, pmap_update_entry() has unconditionally passed false as
final_only to pmap_s1_invalidate_range().  Passing false means that we
invalidate the intermediate "page walk cache" entries in the TLB as well
as the leaf that is being replaced. However, invalidating intermediate
entries is only necessary when doing a superpage promotion that replaces
a pointer to a page table page by a large page mapping.

Reviewed by:	andrew, kib, markj
MFC after:	1 month
Differential Revision:	https://reviews.freebsd.org/D58917

0 files changed, 0 insertions, 0 deletions