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graphic: 0.619
device: 0.536
semantic: 0.479
socket: 0.321
PID: 0.302
vnc: 0.295
performance: 0.248
debug: 0.242
permissions: 0.233
files: 0.183
network: 0.162
boot: 0.110
other: 0.064
KVM: 0.031
Qemu Adventcalendar 2020 ELKS fails to run with error "qemu-system-x86_64: at most one isa-vga device is permitted"
Description of problem:
Running ELKS from Qemu Advent calendar results in:
qemu-system-x86_64: at most one isa-vga device is permitted
Steps to reproduce:
(with ELKS)
1. Untar https://download.qemu.org/qemu-6.2.0-rc0.tar.xz
1. Build qemu-system-x86_64
2. Download https://www.qemu-advent-calendar.org/2020/download/day23.tar.gz
3. Execute ELKS as described in run.sh
Additional information:
A git bisect was performed to identify the culprit commit:
```
qemu$ git bisect good
binäre Suche: danach noch 1 Commit zum Testen übrig (ungefähr 1 Schritt)
[2b3a98255c90d8d2f9f87a73eb33371961508517] hw/display/xlnx_dp: fix an out-of-bounds read in xlnx_dp_read
qemu$ ./configure --target-list=x86_64-softmmu --disable-linux-user && make -j2
qemu$ build/qemu-system-x86_64 -machine isapc -vga std
qemu-system-x86_64: at most one isa-vga device is permitted
qemu$ git bisect bad
binäre Suche: danach noch 0 Commits zum Testen übrig (ungefähr 0 Schritte)
[7852a77f598635a67a222b6c1463c8b46098aed2] vga: don't abort when adding a duplicate isa-vga device
qemu$ cat .git/refs/bisect/bad
2b3a98255c90d8d2f9f87a73eb33371961508517
qemu$ git status
HEAD losgelöst bei 7852a77f59
```
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