> On Mon, Nov 12, 2018, 3:12 PM Rodney W. Grimes <
> free...@pdx.rh.cn85.dnsmgr.net wrote:
> 
> > > Author: zeising (doc,ports committer)
> > > Date: Mon Nov 12 21:01:28 2018
> > > New Revision: 340387
> > > URL: https://svnweb.freebsd.org/changeset/base/340387
> > >
> > > Log:
> > >   Add evdev support to amd64 and i386 kernels
> > >
> > >   Include evdev support and drivers in the amd64 and i386 GENERIC and
> > MINIMAL
> > >   kernels.  Evdev is used by X and wayland to handle input devices, and
> > this
> > >   change, together with upcomming changes in ports will make us handle
> > input
> > >   devices better in graphical UIs.
> >
> > Well these "upcomming" changes in ports effect aarch64 and powerpc
> > who are also consumers of X?
> >
> 
> Likely. Though there is little experience with them, so we don't know if it
> is even safe to turn them on there yet. This has taken 6 months to get
> stable on x86 due to its fragile console locking protocol. Similar time has
> not been invested elsewhere, so until that happens, we should keep them off
> by default. Otherwise we run the risk of destabilizing these platforms,
> even for people who don't use X. As tier 2 platforms, this has been how
> we've traditionally approached risk. Even though aarch64 is approaching
> tier1 status overall, in graphics it is still lagging.

>From some place aarch64 is already a tier1 platform, specifically
it is listed as such in the pkg.freebsd.org package download page.

My real concern here is that it sounded like changes to what are
in the ports/packages are going to be made in such a way that you
are required to have evdev to use them.  If this suddently becomes
mandatory to be able to use X we need to ensure that this code
(evdev) does infact work on aarch64 and others before such changes are
put in place.  My reading here is that this code is only avaliable
as static compile into the kernel, aka no moduleto load, making this
a non-trivial road block to rpi3, etc users.

> Warner
> 
> 
> >   Reviewed by:        wulf, bapt, imp
> > >   Approved by:        imp
> > >   Differential Revision:      https://reviews.freebsd.org/D17912
> > >
> > > Modified:
> > >   head/sys/amd64/conf/GENERIC
> > >   head/sys/amd64/conf/MINIMAL
> > >   head/sys/i386/conf/GENERIC
> > >   head/sys/i386/conf/MINIMAL
> > >
> > > Modified: head/sys/amd64/conf/GENERIC
> > >
> > ==============================================================================
> > > --- head/sys/amd64/conf/GENERIC       Mon Nov 12 20:44:22 2018
> > (r340386)
> > > +++ head/sys/amd64/conf/GENERIC       Mon Nov 12 21:01:28 2018
> > (r340387)
> > > @@ -372,3 +372,8 @@ device            vmx                     # VMware
> > VMXNET3 Ethernet
> > >
> > >  # Netmap provides direct access to TX/RX rings on supported NICs
> > >  device               netmap                  # netmap(4) support
> > > +
> > > +# evdev interface
> > > +options      EVDEV_SUPPORT           # evdev support in legacy drivers
> > > +device               evdev                   # input event device
> > support
> > > +device               uinput                  # install /dev/uinput cdev
> > >
> > > Modified: head/sys/amd64/conf/MINIMAL
> > >
> > ==============================================================================
> > > --- head/sys/amd64/conf/MINIMAL       Mon Nov 12 20:44:22 2018
> > (r340386)
> > > +++ head/sys/amd64/conf/MINIMAL       Mon Nov 12 21:01:28 2018
> > (r340387)
> > > @@ -147,3 +147,8 @@ device            bpf                     # Berkeley
> > packet filter
> > >  # NOTE: XENHVM depends on xenpci.  They must be added or removed
> > together.
> > >  options      XENHVM                  # Xen HVM kernel infrastructure
> > >  device               xenpci                  # Xen HVM Hypervisor
> > services driver
> > > +
> > > +# evdev interface
> > > +options      EVDEV_SUPPORT           # evdev support in legacy drivers
> > > +device               evdev                   # input event device
> > support
> > > +device               uinput                  # install /dev/uinput cdev
> > >
> > > Modified: head/sys/i386/conf/GENERIC
> > >
> > ==============================================================================
> > > --- head/sys/i386/conf/GENERIC        Mon Nov 12 20:44:22 2018
> > (r340386)
> > > +++ head/sys/i386/conf/GENERIC        Mon Nov 12 21:01:28 2018
> > (r340387)
> > > @@ -366,3 +366,8 @@ device            xenpci                  # Xen HVM
> > Hypervisor services driver
> > >
> > >  # VMware support
> > >  device               vmx                     # VMware VMXNET3 Ethernet
> > > +
> > > +# evdev interface
> > > +options      EVDEV_SUPPORT           # evdev support in legacy drivers
> > > +device               evdev                   # input event device
> > support
> > > +device               uinput                  # install /dev/uinput cdev
> > >
> > > Modified: head/sys/i386/conf/MINIMAL
> > >
> > ==============================================================================
> > > --- head/sys/i386/conf/MINIMAL        Mon Nov 12 20:44:22 2018
> > (r340386)
> > > +++ head/sys/i386/conf/MINIMAL        Mon Nov 12 21:01:28 2018
> > (r340387)
> > > @@ -148,3 +148,8 @@ device            bpf                     # Berkeley
> > packet filter
> > >  # NOTE: XENHVM depends on xenpci.  They must be added or removed
> > together.
> > >  options      XENHVM                  # Xen HVM kernel infrastructure
> > >  device               xenpci                  # Xen HVM Hypervisor
> > services driver
> > > +
> > > +# evdev interface
> > > +options      EVDEV_SUPPORT           # evdev support in legacy drivers
> > > +device               evdev                   # input event device
> > support
> > > +device               uinput                  # install /dev/uinput cdev
> > >
> > >
> >
> > --
> > Rod Grimes
> > rgri...@freebsd.org
> >
> >

-- 
Rod Grimes                                                 rgri...@freebsd.org
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