сб, 18 мая 2019 г. в 11:44, Konstantin Belousov <kostik...@gmail.com>:
> On Sat, May 18, 2019 at 11:35:29AM +0300, Dmitry Chagin wrote: > > чт, 16 мая 2019 г. в 16:29, Konstantin Belousov <k...@freebsd.org>: > > > > > Author: kib > > > Date: Thu May 16 13:28:48 2019 > > > New Revision: 347695 > > > URL: https://svnweb.freebsd.org/changeset/base/347695 > > > > > > Log: > > > amd64 pmap: rework delayed invalidation, removing global mutex. > > > > > > For machines having cmpxcgh16b instruction, i.e. everything but very > > > early Athlons, provide lockless implementation of delayed > > > invalidation. > > > > > > The implementation maintains lock-less single-linked list with the > > > trick from the T.L. Harris article about volatile mark of the > elements > > > being removed. Double-CAS is used to atomically update both link and > > > generation. New thread starting DI appends itself to the end of the > > > queue, setting the generation to the generation of the last element > > > +1. On DI finish, thread donates its generation to the previous > > > element. The generation of the fake head of the list is the last > > > passed DI generation. Basically, the implementation is a queued > > > spinlock but without spinlock. > > > > > > > > > > Hi, Kostik! First of all thanks for the previous help. > > Second, this commit broke i915kms module. Unfortunatelly, > > I can't give you a lot of information becouse I see only black screen, > > but I can help with testing > Did you recompiled the module ? > I use pkg, but after your mail, yes, compiled drm-current-kmod root@mordor:~ # kldstat Id Refs Address Size Name 1 4 0xffffffff80200000 1d536e0 kernel 2 1 0xffffffff81f54000 11e8 acpi_call.ko root@mordor:~ # kldload i915kms sysctl_warn_reuse: can't re-use a leaf (compat.linuxkpi.debug)! drmn1: <drmn> on vgapci1 device_attach: drmn1 attach returned 19 root@mordor:~ so, I'll ping freebsd-x11 _______________________________________________ svn-src-head@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/svn-src-head To unsubscribe, send any mail to "svn-src-head-unsubscr...@freebsd.org"
