DRM-current-kmod is still a problem at r353339

[Xin Li]

Another (semi-fixed!) data point -- I can confirm that with if
(vm_page_sleep_if_busy(page, "linuxkpi"))
 -> if (!vm_page_busy_acquire(page, VM_ALLOC_WAITFAIL)) change and
mjg@'s earlier patch at
https://people.freebsd.org/~mjg/pmap-fict-invl.diff (please commit it) ,
the latest drm-v5.0 branch of drm-current-kmod worked just fine with
Intel HD Graphics P630 on Lenovo P51.

On 2019-10-17 18:37, Neel Chauhan wrote:
> However, the patch to drm-kmod doesn't work for me. I tried both
> drm-devel-kmod and drm-current-kmod.
> 
> https://i.imgur.com/81JvaOO.jpg
> 
> -Neel
> 
> ===
> 
> https://www.neelc.org/
> 
> On 2019-10-17 17:35, Eirik Øverby wrote:
>> On 10/17/19 11:29 PM, Eirik Øverby wrote:
>>> On 10/17/19 10:31 PM, Niclas Zeising wrote:
>>>> On 2019-10-17 21:53, markj at freebsd.org wrote:
>>>>> On Thu, Oct 17, 2019 at 03:03:51PM +0200, Niclas Zeising wrote:
>> ......
>>>>> I believe it was the recent work on the vm page busy state, r353539
>>>>> specifically.  This patch should fix it; we don't yet have a
>>>>> __FreeBSD_version number bump on which to gate the patch.
>> .......>>
>>>> Hi!
>>>> Hopefully someone can confirm that this patch to drm-current-kmod or
>>>> drm-devel-kmod fixes the issue.  I won't be able to work on this
>>>> before the weekend at the earliest, I'm afraid.
>>>> Mark, is it possible to get a belated version bump for this fix, and
>>>> what changed to require it?
>>>
>>> Built, rebooting ... Will hopefully check back in soon.
>>
>> And tada, I'm back. That seemed to do the trick. Thanks!
>>
>> /Eirik
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