riscv/pmap.c: Add an Svinval-aware variant of pmap_invalidate_rangeHEADmain

This change introduces a variant of `pmap_invalidate_range` that uses
the fine-grained TLB invalidation instructions introduced by the
Svinval extension. These instructions allow for more efficient TLB
flushing on certain implementations. Under this new scheme,
`pmap_invalidate_range` was converted to an ifunc that selects the
appropriate variant during boot.

Event:	BSDCan 2026
Reviewed by:	markj, mhorne
Differential Revision:	https://reviews.freebsd.org/D57624

0 files changed, 0 insertions, 0 deletions