Brooks Davis <bro...@freebsd.org> writes:

> Author: brooks
> Date: Thu Sep 27 21:08:32 2018
> New Revision: 338990
> URL: https://svnweb.freebsd.org/changeset/base/338990
>
> Log:
>   Centralize compat support for PCIOCGETCONF.
>   
>   The pre-7.x compat for both native and 32-bit code was already in
>   pci_user.c. Use this infrastructure to add implement 32-bit support.
>   This is more correct as ioctl(2) commands only have meaning in the
>   context of a file descriptor.
>   
>   Reviewed by:        kib
>   Approved by:        re (gjb)
>   Obtained from:      CheriBSD
>   Sponsored by:       DARPA, AFRL
>   Differential revision:      https://reviews.freebsd.org/D17324

After this commit getdevice() from pciconf(8) and pci_find_conf() in
tools/tools/dmardump/dmardump.c always fail in EPERM in -m32 mode.
Found via graphics/libdrm where PCIOCGETCONF is used to get a list of
DRM devices for use by OpenGL/Vulkan/VAAPI userland drivers.

Can you fix the regression before 12.0R or back the commit out?

https://lists.freebsd.org/pipermail/freebsd-current/2018-November/072144.html
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