Date: Wed, 25 Aug 2010 22:09:02 +0000 (UTC) From: Jung-uk Kim <jkim@FreeBSD.org> To: cvs-src-old@freebsd.org Subject: cvs commit: src/sys/dev/fb vesa.c Message-ID: <201008252209.o7PM9LeI073094@repoman.freebsd.org>
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jkim 2010-08-25 22:09:02 UTC
FreeBSD src repository
Modified files:
sys/dev/fb vesa.c
Log:
SVN rev 211827 on 2010-08-25 22:09:02Z by jkim
Add an experimental feature to shadow video BIOS. Long ago, this trick was
supported by many BIOSes to improve performance of VESA BIOS calls for real
mode OSes but it is not our intention here. However, this may help some
platforms where the video ROMs are inaccessible after suspend, for example.
Note it may consume up to 64K bytes of contiguous memory depending on video
controller model when it is enabled. This feature can be disabled by
setting zero to 'debug.vesa.shadow_rom' loader tunable via loader(8) or
loader.conf(5). The default is 1 (enabled), for now.
Revision Changes Path
1.45 +57 -10 src/sys/dev/fb/vesa.c
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