svn commit: r340387 - in head/sys: amd64/conf i386/conf

[Warner Losh]

On Mon, Nov 12, 2018, 3:12 PM Rodney W. Grimes <
freebsd at 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.

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
> rgrimes at freebsd.org
>
>