mirror_zfs/lib/libspl
Brian Behlendorf 10fa254539
Linux 4.14, 4.19, 5.0+ compat: SIMD save/restore
Contrary to initial testing we cannot rely on these kernels to
invalidate the per-cpu FPU state and restore the FPU registers.
Nor can we guarantee that the kernel won't modify the FPU state
which we saved in the task struck.

Therefore, the kfpu_begin() and kfpu_end() functions have been
updated to save and restore the FPU state using our own dedicated
per-cpu FPU state variables.

This has the additional advantage of allowing us to use the FPU
again in user threads.  So we remove the code which was added to
use task queues to ensure some functions ran in kernel threads.

Reviewed-by: Fabian Grünbichler <f.gruenbichler@proxmox.com>
Reviewed-by: Tony Hutter <hutter2@llnl.gov>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Issue #9346
Closes #9403
2019-10-24 10:17:33 -07:00
..
asm-generic OpenZFS restructuring - libspl 2019-10-02 10:39:48 -07:00
asm-i386 Fix atomic_sub_64() i386 assembly implementation 2017-02-01 09:36:47 -08:00
asm-x86_64 Support parallel build trees (VPATH builds) 2015-07-17 13:42:51 -07:00
include Linux 4.14, 4.19, 5.0+ compat: SIMD save/restore 2019-10-24 10:17:33 -07:00
os/linux OpenZFS restructuring - libspl 2019-10-02 10:39:48 -07:00
list.c Add linux libspl support 2010-08-31 13:41:59 -07:00
Makefile.am OpenZFS restructuring - libspl 2019-10-02 10:39:48 -07:00
mkdirp.c Fix typos in lib/ 2019-09-02 17:53:27 -07:00
page.c ABD optimized page allocation code 2016-11-29 14:34:33 -08:00
strlcat.c Check for strlcat and strlcpy 2018-12-11 16:01:41 -08:00
strlcpy.c Check for strlcat and strlcpy 2018-12-11 16:01:41 -08:00
timestamp.c Fix zpool iostat -T d 1 on musl 2017-04-12 08:57:46 -07:00
zone.c cstyle: Resolve C style issues 2013-12-18 16:46:35 -08:00