Module Name: src
Committed By: ad
Date: Sun Jun 14 21:47:15 UTC 2020
Modified Files:
src/sys/arch/aarch64/aarch64: pmap.c
src/sys/arch/aarch64/include: pmap.h
Log Message:
- Fix a lock order reversal in pmap_page_protect().
- Make sure pmap is always locked when updating stats; atomics no longer
needed to do that.
- Remove unneeded traversal of pv list in pmap_enter_pv().
- Shrink struct vm_page from 136 to 128 bytes (cache line sized) and struct
pv_entry from 48 to 32 bytes (power of 2 sized).
- Embed a pv_entry in each vm_page. This means PV entries don't need to
be allocated for private anonymous memory / COW pages / most UBC mappings.
Dynamic PV entries are then used only for stuff like shared libraries and
shared memory.
Proposed on port-arm@.
To generate a diff of this commit:
cvs rdiff -u -r1.77 -r1.78 src/sys/arch/aarch64/aarch64/pmap.c
cvs rdiff -u -r1.39 -r1.40 src/sys/arch/aarch64/include/pmap.h
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
