CVSROOT: /cvs
Module name: src
Changes by: kette...@cvs.openbsd.org 2022/07/17 11:59:35
Modified files:
sys/uvm : uvm_pager.c
Log message:
Revert the changes made in rev 1.82. It is important to use pmap_enter(9)
and pmap_remove(9) here since we're dealing with managed pages here. Found
out the hard way by deraadt@ on landisk where we're running into issues
with virtual cache aliases because multiple mappings exist for the
pages we're dealing with here. The pmap_enter(9) and pmap_remove(9)
functions handle conflicting cache aliases, whereas pmap_map_direct(9) and
pmap_kenter_pa(9) assume that the pages is exclusively mapped in the kernel
pmap.
ok deraadt@
