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Subject: Re: svn commit: r328436 - head/sys/compat/linuxkpi/common/src
To: Jan Beich <jbeich@FreeBSD.org>
Cc: src-committers@freebsd.org, svn-src-all@freebsd.org,
 svn-src-head@freebsd.org
References: <201801261049.w0QAn2Xt089656@repo.freebsd.org>
 <h8r1-m2fj-wny@FreeBSD.org>
From: Hans Petter Selasky <hps@selasky.org>
Message-ID: <caa75f3c-2fdb-246d-6a6f-2365bad6b84d@selasky.org>
Date: Thu, 1 Feb 2018 12:04:32 +0100
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On 02/01/18 11:25, Jan Beich wrote:
> Hans Petter Selasky <hselasky@FreeBSD.org> writes:
> 
>> Author: hselasky
>> Date: Fri Jan 26 10:49:02 2018
>> New Revision: 328436
>> URL: https://svnweb.freebsd.org/changeset/base/328436
>>
>> Log:
>>    Decouple Linux files from the belonging character device right after open
>>    in the LinuxKPI. This is done by calling finit() just before returning a magic
>>    value of ENXIO in the "linux_dev_fdopen" function.
> 
> This breaks DRI3 (uses DMABUF) on drm-next-kmod (Linux 4.9 atm) e.g.,
> 
> $ LIBGL_DRI3_ENABLE=1 LIBGL_DEBUG=verbose MESA_DEBUG=context glxgears
> libGL: screen 0 does not appear to be DRI3 capable
> libGL error: Connection closed during DRI3 initialization failure
> XIO:  fatal IO error 35 (Resource temporarily unavailable) on X server ":0"
>        after 22 requests (22 known processed) with 0 events remaining.
> 

Hi,

I'll have a look. It might be an issue in libdrm, because it uses some 
out-of date methods to enumerate the device nodes, like the major and 
minor numbers.

Did you recompile drm-next-kmod after recompiling the LinuxKPI?

--HPS