diff options
| author |   mlarkin <mlarkin@openbsd.org> | 2013-05-31 19:59:59 +0000 |
|---|---|---|
| committer | mlarkin <mlarkin@openbsd.org> | 2013-05-31 19:59:59 +0000 |
| commit | 9ecd98c6005380dddc2ef65cdaf97e13ee7ca812 (patch) | |
| tree | 71195b790930973503d394998feea783d04cddbb /sys/kern/subr_hibernate.c | |
| parent | Correct the range checks in ifconfig properly for vhid, advbase and advskew. (diff) | |
| download | wireguard-openbsd-9ecd98c6005380dddc2ef65cdaf97e13ee7ca812.tar.xz wireguard-openbsd-9ecd98c6005380dddc2ef65cdaf97e13ee7ca812.zip | |
We need to halt the APs on MP hibernate resume or else they will be
executing code possibly causing side effects during the image unpack
operation. But before we can halt the APs, we need to complete their init
(as they will be hatched but idling, possibly with interrupts off).
Introduces MD function hibernate_quiesce_cpus to do this, called from the
MI hibernate resume code.
ok deraadt
Diffstat (limited to 'sys/kern/subr_hibernate.c')
| -rw-r--r-- | sys/kern/subr_hibernate.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/sys/kern/subr_hibernate.c b/sys/kern/subr_hibernate.c index c195ed81c95..d4e23b4a507 100644 --- a/sys/kern/subr_hibernate.c +++ b/sys/kern/subr_hibernate.c @@ -1,4 +1,4 @@ -/* $OpenBSD: subr_hibernate.c,v 1.56 2013/05/30 19:00:59 mlarkin Exp $ */ +/* $OpenBSD: subr_hibernate.c,v 1.57 2013/05/31 20:00:00 mlarkin Exp $ */ /* * Copyright (c) 2011 Ariane van der Steldt <ariane@stack.nl> @@ -1187,6 +1187,10 @@ hibernate_resume(void) return; } +#ifdef MULTIPROCESSOR + hibernate_quiesce_cpus(); +#endif /* MULTIPROCESSOR */ + printf("Unhibernating...\n"); /* Read the image from disk into the image (pig) area */ |