mirror_zfs/include/os/linux
Ryan Moeller fb3ad5d24e FreeBSD: Do zcommon_init sooner to avoid FPU panic
There has been a panic affecting some system configurations where the
thread FPU context is disturbed during the fletcher 4 benchmarks,
leading to a panic at boot.

module_init() registers zcommon_init to run in the last subsystem
(SI_SUB_LAST).  Running it as soon as interrupts have been configured
(SI_SUB_INT_CONFIG_HOOKS) makes sure we have finished the benchmarks
before we start doing other things.

While it's not clear *how* the FPU context was being disturbed, this
does seem to avoid it.

Add a module_init_early() macro to run zcommon_init() at this earlier
point on FreeBSD.  On Linux this is defined as module_init().

Authored by: Konstantin Belousov <kib@FreeBSD.org>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Ryan Moeller <ryan@iXsystems.com>
Closes #11302
2020-12-23 14:34:59 -08:00
..
kernel FreeBSD: Do zcommon_init sooner to avoid FPU panic 2020-12-23 14:34:59 -08:00
spl Replace ZFS on Linux references with OpenZFS 2020-10-16 13:01:24 -07:00
zfs Linux: Fix ZFS_ENTER/ZFS_EXIT/ZFS_VERFY_ZP usage 2020-11-14 10:51:27 -08:00
Makefile.am OpenZFS restructuring - move platform specific headers 2019-09-05 09:34:54 -07:00