wireguard-openbsd/sys/arch/amd64/include/atomic.h, branch jd/queueboosts WireGuard implementation for the OpenBSD kernel https://git.zx2c4.com/wireguard-openbsd/atom/sys/arch/amd64/include/atomic.h?h=jd%2Fqueueboosts 2017-05-27T20:12:12Z On i386 and amd64, atomic instructions include an implicit memory barrier. 2017-05-27T20:12:12Z kettenis kettenis@openbsd.org 2017-05-27T20:12:12Z urn:sha1:9f3f0ed432415ecc31a81bcea1c330982ce74d0d ok mikeb@, visa@, mpi@ Make atomic.h ready to be included in userland. 2017-05-12T08:47:03Z mpi mpi@openbsd.org 2017-05-12T08:47:03Z urn:sha1:b67e4186c4769a6a5959ad2f1df907c4c34a0c78 - prefix the LOCK macro with an underscore - keep setbits/clearbits and virtio barriers inside _KERNEL ok dlg@, kettenis@ Fix x86_atomic_{set|clear}bits_u64() by using the "er" constraint instead 2016-08-17T11:56:42Z kettenis kettenis@openbsd.org 2016-08-17T11:56:42Z urn:sha1:7199ec15032b1c1b99be7f6c9e950a471bb147df of "ir" as the orq and andq instructions take a 32-bit immedate argument that gets sign-extended. ok mikeb@ implement atomic_swap_{uint,ulong,ptr) and some md variants. use these 2015-01-06T00:38:32Z dlg dlg@openbsd.org 2015-01-06T00:38:32Z urn:sha1:9b702505ae13990c2fdad6f544edc7ef62878f55 to replace x86_atomic_testset_{u32,u64}. help from guenther@ kettenis@ ok kettenis@ Add virtio_membar_* macros 2014-10-08T19:40:28Z sf sf@openbsd.org 2014-10-08T19:40:28Z urn:sha1:07376847917782e303fe3a41784228b099ca0177 Virtio needs the MP memory barriers even on SP kernels. OK kettenis@ Implement membar(9) API for amd64. 2014-09-07T22:19:32Z kettenis kettenis@openbsd.org 2014-09-07T22:19:32Z urn:sha1:877a88e5ccb8cb29bd4e6e5a66d8f21f597fe7c1 ok dlg@, guenther@ Add implementations of atomic_{inc,dec,add,sub}_{int,long}() and 2014-09-01T03:39:15Z guenther guenther@openbsd.org 2014-09-01T03:39:15Z urn:sha1:e3eaccae9d76588bb50d9ac649da9da9aff15ea8 atomic_{add,sub}_{int,long}_nv(), based on Solaris and translated through the mind of dlg@ Remove the 'memory' constraint from atomic_cas_{uint,ulong,ptr}() now that rw_{enter,exit}*() use membars. ok dlg@ pass atomic_{cas,swap}_uint a volatile void * instead of a volatile 2014-07-18T10:40:14Z dlg dlg@openbsd.org 2014-07-18T10:40:14Z urn:sha1:b6a8cdec0644848be2c33a0b98958bac4cee0f95 void **. the latter is really hard to cast for, and not what what solaris does. ok kettenis@ It's been a quarter century: we can assume volatile is present with that name. 2014-03-29T18:09:28Z guenther guenther@openbsd.org 2014-03-29T18:09:28Z urn:sha1:2df76cc2a0aee2cb2166e3799b7bb5c3f883f83d ok dlg@ mpi@ deraadt@ replace x86_atomic_cas_things with atomic_cas_foo equivalents. 2014-03-27T10:24:40Z dlg dlg@openbsd.org 2014-03-27T10:24:40Z urn:sha1:813b3f908663da48e2becacf1c3fd9989f3d6774 ok kettenis@