From f8b237af00a74595dd372f1b23129906948ad9e2 Mon Sep 17 00:00:00 2001 From: aliguori Date: Wed, 21 Jan 2009 18:31:26 +0000 Subject: cirrus: avoid resetting vga dirty logging unnecessarily (Avi Kivity) cirrus bitblt reset will stop and start dirty logging even when there is no need; this causes full redraws. avoid by only updating memory access when exiting cpu-to-video update mode. Signed-off-by: Jan Kiszka Signed-off-by: Anthony Liguori git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6384 c046a42c-6fe2-441c-8c8c-71466251a162 --- hw/cirrus_vga.c | 6 ++++++ 1 file changed, 6 insertions(+) (limited to 'hw/cirrus_vga.c') diff --git a/hw/cirrus_vga.c b/hw/cirrus_vga.c index 706c4c30f0..fc7c9cad9a 100644 --- a/hw/cirrus_vga.c +++ b/hw/cirrus_vga.c @@ -850,11 +850,17 @@ static void cirrus_bitblt_cputovideo_next(CirrusVGAState * s) static void cirrus_bitblt_reset(CirrusVGAState * s) { + int need_update; + s->gr[0x31] &= ~(CIRRUS_BLT_START | CIRRUS_BLT_BUSY | CIRRUS_BLT_FIFOUSED); + need_update = s->cirrus_srcptr != &s->cirrus_bltbuf[0] + || s->cirrus_srcptr_end != &s->cirrus_bltbuf[0]; s->cirrus_srcptr = &s->cirrus_bltbuf[0]; s->cirrus_srcptr_end = &s->cirrus_bltbuf[0]; s->cirrus_srccounter = 0; + if (!need_update) + return; cirrus_update_memory_access(s); } -- cgit v1.2.3