svn commit: r347695 - in head/sys: amd64/amd64 amd64/include kern

[Niclas Zeising]

On 2019-05-19 10:11, Dmitry Chagin wrote:
> сб, 18 мая 2019 г. в 11:44, Konstantin Belousov <kostikbel at 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 <kib at 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 at mordor:~ # kldstat
> Id Refs Address                Size Name
>   1    4 0xffffffff80200000  1d536e0 kernel
>   2    1 0xffffffff81f54000     11e8 acpi_call.ko
> root at 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 at mordor:~
> 
> so, I'll ping freebsd-x11

Hi!
drm-current-kmod was updated to the 20190519 snapshot, can you try that? 
  If it still fails, please send a message to x11 at freebsd.org .
Thanks!
Regards
-- 
Niclas Zeising