Module Name: src
Committed By: maxv
Date: Sat Aug 17 12:37:49 UTC 2019
Modified Files:
src/sys/kern: subr_pool.c
Log Message:
Kernel Heap Hardening: use bitmaps on all off-page pools. This migrates 29
MI pools on amd64 from linked lists to bitmaps, which have higher security
properties.
Then, change the computation of the size of the PH pools: take into account
the bitmap area available by default in the ph_u2 union, and don't go with
&phpool[>0] if &phpool[0] already has enough space to embed a bitmap.
The pools that are migrated in this change all use bitmaps small enough to
fit in &phpool[0], therefore there is no increase in memory consumption.
To generate a diff of this commit:
cvs rdiff -u -r1.255 -r1.256 src/sys/kern/subr_pool.c
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
