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| author |   guenther <guenther@openbsd.org> | 2013-05-06 00:23:49 +0000 |
|---|---|---|
| committer | guenther <guenther@openbsd.org> | 2013-05-06 00:23:49 +0000 |
| commit | 9cea5a4d20b399784136c8ceaebbc1e93a61aec9 (patch) | |
| tree | ff358f68dd60445e71629b314014000774c0aeea /sys/kern/kern_rwlock.c | |
| parent | the use of modern intel performance counter msrs to measure the number of (diff) | |
| download | wireguard-openbsd-9cea5a4d20b399784136c8ceaebbc1e93a61aec9.tar.xz wireguard-openbsd-9cea5a4d20b399784136c8ceaebbc1e93a61aec9.zip | |
If the lock is contended, such that the 'sc' fails, then we need to
reset the %2 register with _SPINLOCK_LOCKED before retrying.
tobiasu@ hit the problem and figured out that ".set noreorder" is
needed in the ASM
Diffstat (limited to 'sys/kern/kern_rwlock.c')
0 files changed, 0 insertions, 0 deletions