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8.1.0-rc1 Regression: donkey in qemu advent calender 03/2020 has graphical artifacts
Description of problem:
The game donkey shows graphical artifacts on playing. On changing the lane the car remains on its previous land as well.
A git bisect identified commit 592134617c98f37b8b39c6dd684e5a1832c071d2 as culprit
Steps to reproduce:
1. Download http://qemu-advent-calendar.org/2020/download/gw-basic.tar.xz
2. Start VM using command
```
qemu-system-i386 -m 16M -drive if=ide,format=qcow2,file=gwbasic.qcow2
```
3. Wait for GW-Basic prompt and enter (see README): F3 - donkey - <ENTER> - F2
4. Play to see graphical artifacts
Additional information:
```
$ git bisect bad
592134617c98f37b8b39c6dd684e5a1832c071d2 is the first bad commit
commit 592134617c98f37b8b39c6dd684e5a1832c071d2
Author: Richard Henderson
Date: Sun Oct 30 12:07:32 2022 +1100
accel/tcg: Reorg system mode store helpers
Instead of trying to unify all operations on uint64_t, use
mmu_lookup() to perform the basic tlb hit and resolution.
Create individual functions to handle access by size.
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
accel/tcg/cputlb.c | 394 +++++++++++++++++++++++++----------------------------
1 file changed, 186 insertions(+), 208 deletions(-)
```
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