wireguard-openbsd/sys/arch/amd64/include/tcb.h, branch jd/queueboosts WireGuard implementation for the OpenBSD kernel https://git.zx2c4.com/wireguard-openbsd/atom/sys/arch/amd64/include/tcb.h?h=jd%2Fqueueboosts 2017-10-13T05:14:02Z I was one bit off in the "is canonical" test for FS.base (TCB pointer) values, 2017-10-13T05:14:02Z guenther guenther@openbsd.org 2017-10-13T05:14:02Z urn:sha1:ab07a1674255d38deb4192a7087a6b9972a47e3a so it was still possible to fault the kernel. Problem observed by Maxime Villard ok deraadt@ bluhm@ amd64 needs FS.base values (the TCB pointer) to be validated, as noncanonical 2017-09-27T05:43:55Z guenther guenther@openbsd.org 2017-09-27T05:43:55Z urn:sha1:c742113d8903fcfb365128bb071fbbed675ee0d4 addresses will cause a fault on load by the kernel. Problem observed by Maxime Villard ok kettenis@ deraadt@ TCB_GET_MEMBER() is no longer used after the TIB changes 2016-09-04T08:49:35Z guenther guenther@openbsd.org 2016-09-04T08:49:35Z urn:sha1:96b8842b622f9505c1b9cc4ddf5b9b4045994781 Do lazy update/reset of the FS.base and %[def]s segment registers: reseting 2015-05-18T19:59:27Z guenther guenther@openbsd.org 2015-05-18T19:59:27Z urn:sha1:b13138f26d8f4e65100b2377aab2ba4570a8d014 segment registers in cpu_switchto if the old thread had made it to userspace and restoring FS.base only on first return to userspace since context switch. ok mlarkin@ Oh yeah, a cvs id is good 2011-10-19T06:48:56Z guenther guenther@openbsd.org 2011-10-19T06:48:56Z urn:sha1:f5501f3dfbb33536743d16aea10c06ce40a052e0 "TLS-lite": add kernel support for a per-thread userspace pointer, 2011-10-15T23:35:29Z guenther guenther@openbsd.org 2011-10-15T23:35:29Z urn:sha1:6bb855475d0cdbaa6e89d93537105bdf30f02caf for pointing to the thread-control-block. Support for mapping this to the correct hardware register can be added as it's finished; start with support for amd64, sparc, and sparc64. Includes syscalls for getting and setting it (for a portable __errno implementation) as well as creating a new thread with an initial value for it. discussed with miod@, kettenis@, deraadt@; committing to get the syscalls in with the impending libc bump and do further refinements in tree