dumbbell df193d50d1 vt(4): Add support to "downgrade" from eg. vt_fb to vt_vga
The main purpose of this feature is to be able to unload a KMS driver.

When going back from the current vt(4) backend to the previous backend,
the previous backend is reinitialized with the special VDF_DOWNGRADE
flag set. Then the current driver is terminated with the new "vd_fini"
callback.

In the case of vt_fb and vt_vga, this allows the former to pass the
vgapci device vt_fb used to vt_vga so the device can be rePOSTed.

Differential Revision:	https://reviews.freebsd.org/D687
2015-03-01 12:54:22 +00:00
..
2015-01-23 21:08:24 +00:00
2015-03-01 00:22:16 +00:00
2015-02-23 12:54:46 +00:00
2015-02-27 20:32:09 +00:00
2015-02-02 16:07:07 +00:00
2014-12-27 07:07:37 +00:00