Merge from head@274682

Sync to HEAD@r274095.

drm: When reading connector mode tunables, list connectors

... and their associated tunables. This gives a way to know the list of
available connectors, no matter the driver.

The problem is that xr

drm: When reading connector mode tunables, list connectors

... and their associated tunables. This gives a way to know the list of
available connectors, no matter the driver.

The problem is that xrandr(1) can list connectors but it uses a
different naming.

MFC after: 1 week

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drm: Take vt(4) default mode from loader tunables

By default, vt(4) gets the "preferred mode" from DRM, when using a DRM
video driver as its backend. The preferred mode is usually the native
screen

drm: Take vt(4) default mode from loader tunables

By default, vt(4) gets the "preferred mode" from DRM, when using a DRM
video driver as its backend. The preferred mode is usually the native
screen resolution.

Now, if this mode isn't appropriate, a user can use loader tunables to
select a mode. The tunables are read in the following order:
1. kern.vt.fb.modes.$connector_name
2. kern.vt.fb.default_mode

For example, to set a 1024x768 mode, no matter the connector:
kern.vt.fb.default_mode="1024x768"

To set a 800x600 mode only on the laptop builtin screen:
kern.vt.fb.modes.LVDS-1="800x600"

MFC after: 1 week

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IFC @r271694

Sync to HEAD@r271160.

IFC @r269962

Submitted by: Anish Gupta (akgupt3@gmail.com)

drm: Don't "taskqueue" vt-switch if under DDB/panic situation

If DDB is active, we can't use a taskqueue thread to switch away from
the X window, because this thread can't run.

Reviewed by: ray@
Ap

drm: Don't "taskqueue" vt-switch if under DDB/panic situation

If DDB is active, we can't use a taskqueue thread to switch away from
the X window, because this thread can't run.

Reviewed by: ray@
Approved by: ray@
MFC after: 1 week

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Merge head from 7/28

Sync to HEAD@r269943.

Remove #ifdef-s to reduce difference to upstream.

Pointed by: kib

MFC after: 1 week
Sponsored by: The FreeBSD Foundation

Merge head

IFC @264767

MFC @ r259635

This brings in the "-w" option from bhyve to ignore unknown MSRs.
It will make debugging Linux guests a bit easier.

Suggested by: Willem Jan Withagen (wjw at digiware nl)

Merge head up to r262222 (last merge was incomplete).

MFC @ r259205 in preparation for some SVM updates. (for real this time)

Do not try to probe/attach if attempt to add fbd child are failed.

Sponsored by: The FreeBSD Foundation

Disable error message about failed attempt to attach fbd when drm2 built with
syscons.

Sponsored by: The FreeBSD Foundation

Merge VT(9) project (a.k.a. newcons).

Reviewed by: nwhitehorn
MFC_to_10_after: re approval

Sponsored by: The FreeBSD Foundation

IFC @253398

Merge fresh head.

sync from head

MFC @248093

Import Linux commit a1b7736dac5f2d5876e68c47a0fce3f423840070
Author: Sascha Hauer <s.hauer@pengutronix.de>
Date: Wed Feb 1 11:38:22 2012 +0100

drm drm_fb_helper: destroy modes

drm_setup_c

Import Linux commit a1b7736dac5f2d5876e68c47a0fce3f423840070
Author: Sascha Hauer <s.hauer@pengutronix.de>
Date: Wed Feb 1 11:38:22 2012 +0100

drm drm_fb_helper: destroy modes

drm_setup_crtcs allocated modes using drm_mode_duplicate. Free
them in drm_fb_helper_crtc_free.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Dave Airlie <airlied@redhat.com>

Discussed with: Konstantin Belousov (kib@)

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IFC @ r238370