Date: Fri, 24 Aug 2018 17:29:19 -0600 From: Warner Losh <imp@bsdimp.com> To: Niclas Zeising <zeising@freebsd.org> Cc: "Rodney W. Grimes" <freebsd-rwg@pdx.rh.cn85.dnsmgr.net>, Kyle Evans <kevans@freebsd.org>, Johannes Lundberg <johalun0@gmail.com>, Matt Macy <mmacy@freebsd.org>, FreeBSD Current <freebsd-current@freebsd.org> Subject: Re: priority of paths to kernel modules? Message-ID: <CANCZdfpgDSDyv6ZjrKT0BdrXempng9knbeBoMvytJkvynxx0Dg@mail.gmail.com> In-Reply-To: <a67c3e82-838f-dd09-64d3-abb7dbcdd8e7@freebsd.org> References: <CACNAnaGMsifVntGHQ8T4-w6jL%2B2dx5e1Ciw3-CQ9W2MwF38mfg@mail.gmail.com> <201808241411.w7OEBXg8095140@pdx.rh.CN85.dnsmgr.net> <CANCZdfoNdFHM6Z8KVNrUCFzASjRLsd=dkw_fZGpJjsYmFzySUg@mail.gmail.com> <a67c3e82-838f-dd09-64d3-abb7dbcdd8e7@freebsd.org>
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On Fri, Aug 24, 2018 at 4:20 PM Niclas Zeising <zeising@freebsd.org> wrote: > On 08/24/18 17:20, Warner Losh wrote: > > This would allow the graphics port to have a rc script that sets > > this up so when X11 goes to automatically load the module, the right one > > gets loaded. > > > > I just want to point out that X11 doesn't load the graphics kernel > driver by default when using the drm-*-kmod ports, and I'm not sure the > hack to have the intel ddx (xf86-video-intel) load the drm2 driver is > still around. > > It doesn't really matter though, since upstream is moving away from > having X load the driver, and I'd like us to follow suit by using > devmatch (this is one of the reasons we wanted to get rid of the base > drivers, as I've stated before). X can't always know which driver to > load (when using modesetting for instance), and in my opinion, it should > be the kernel/loader that decides which drivers to load. Excellent. That reduces the compatibility matrix I need to consider. I have some ideas, and will hack on them to see if a clever bit of slide of hand will solve the main problem of loading the wrong driver in a dependency chain. Warner
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