diff options
author | dg <dg@FreeBSD.org> | 1995-09-15 23:49:23 +0000 |
---|---|---|
committer | dg <dg@FreeBSD.org> | 1995-09-15 23:49:23 +0000 |
commit | 9237addf837be5e733694a3a0f40fb72cb260ebb (patch) | |
tree | b32352fa7aaf07894f3b35973464457f5a8d5b6a /secure | |
parent | c8876de397482c5b7756424723c25576a7a14e8d (diff) | |
download | FreeBSD-src-9237addf837be5e733694a3a0f40fb72cb260ebb.zip FreeBSD-src-9237addf837be5e733694a3a0f40fb72cb260ebb.tar.gz |
Check for page being resident when doing I/O with /dev/kmem and return
EFAULT if it is not resident. This prevents the system from manufacturing
a zero-fill page for unused but allocated areas of the kernel's VM. This
should fix the "CMAP busy" panic that some people saw during system
startup.
Diffstat (limited to 'secure')
0 files changed, 0 insertions, 0 deletions