Author: emaste
Date: Thu Sep 4 19:22:01 2014
New Revision: 271121
URL: http://svnweb.freebsd.org/changeset/base/271121
Log:
MFC r270299 (dumbbell): vt_vga: When clearing video memory, don't read from it
The goal is to clear the video memory, in case an application drew to
it. So the content shouldn't be loaded in the latches, it can't be
trusted anyway.
This improves a bit the window switch speed.
Sponsored by: The FreeBSD Foundation
Modified:
stable/10/sys/dev/vt/hw/vga/vt_vga.c
Directory Properties:
stable/10/ (props changed)
Modified: stable/10/sys/dev/vt/hw/vga/vt_vga.c
==============================================================================
--- stable/10/sys/dev/vt/hw/vga/vt_vga.c Thu Sep 4 19:13:07 2014
(r271120)
+++ stable/10/sys/dev/vt/hw/vga/vt_vga.c Thu Sep 4 19:22:01 2014
(r271121)
@@ -609,7 +609,6 @@ vga_initialize(struct vt_device *vd, int
* planes.
*/
for (ofs = 0; ofs < VT_VGA_MEMSIZE; ofs++) {
- MEM_READ1(sc, ofs);
MEM_WRITE1(sc, ofs, 0);
}
}
_______________________________________________
svn-src-all@freebsd.org mailing list
http://lists.freebsd.org/mailman/listinfo/svn-src-all
To unsubscribe, send any mail to "svn-src-all-unsubscr...@freebsd.org"
