diff options
| author | aliguori <aliguori@c046a42c-6fe2-441c-8c8c-71466251a162> | 2009-01-21 18:31:26 +0000 |
|---|---|---|
| committer | aliguori <aliguori@c046a42c-6fe2-441c-8c8c-71466251a162> | 2009-01-21 18:31:26 +0000 |
| commit | f8b237af00a74595dd372f1b23129906948ad9e2 (patch) | |
| tree | aa0a3902b7e78b894e1b9d2c7654c486d7f22685 /hw | |
| parent | ba7349cd5d69cd5f066b7e8287f85481d97d1ee4 (diff) | |
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 <jan.kiszka@siemens.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6384 c046a42c-6fe2-441c-8c8c-71466251a162
Diffstat (limited to 'hw')
| -rw-r--r-- | hw/cirrus_vga.c | 6 |
1 files changed, 6 insertions, 0 deletions
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); } |