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architecture: 0.984
ppc: 0.967
graphic: 0.935
kernel: 0.854
device: 0.796
performance: 0.717
semantic: 0.686
PID: 0.686
permissions: 0.613
files: 0.564
debug: 0.488
vnc: 0.479
mistranslation: 0.477
socket: 0.436
TCG: 0.417
user-level: 0.399
peripherals: 0.380
boot: 0.362
risc-v: 0.345
hypervisor: 0.330
network: 0.302
VMM: 0.280
register: 0.260
arm: 0.240
KVM: 0.136
virtual: 0.118
assembly: 0.107
x86: 0.026
i386: 0.006
[9.0.2] PPC: snapshot replay freeze on PowerPC
Description of problem:
Qemu 9.0.2 cannot replay snapshots on PowerPC e500mc (Book-E) architecture. When I try to do this, the program freezes.
Steps to reproduce:
1. Run bare metal example from the attachment with the first command-line to create snapshot. Then end it using ctrl+c.
2. Run bare metal example from the attachment with the second command-line to replay snapshot. Running will freeze, use ctrl+c.
Additional information:
e500mc example that prints Hello World: [ppc-e500.zip](/uploads/ef9ce53abc3f17490d4894c041956038/ppc-e500.zip)
Log output:
```
% qemu-system-ppc -cpu e500 -M ppce500 -kernel hello.elf -display none -serial stdio -icount 1,rr=record,rrfile=main.bin,rrsnapshot=init -drive file=empty.qcow2,if=none,id=rr
Hello world
qemu-system-ppc: terminating on signal 2
% qemu-system-ppc -cpu e500 -M ppce500 -kernel hello.elf -display none -serial stdio -icount 1,rr=replay,rrfile=main.bin,rrsnapshot=init -drive file=empty.qcow2,if=none,id=rr
qemu-system-ppc: terminating on signal 2
qemu-system-ppc: Playback shouldn't have to iowait (insn total 0/68 left, event 4 is EVENT_INSTRUCTION)
zsh: IOT instruction (core dumped) qemu-system-ppc -cpu e500 -M ppce500 -kernel hello.elf -display none -serial
```
`Playback shouldn't have to iowait` error caused by 1f881ea4a444ef36a8b6907b0b82be4b3af253a2 commit, see https://gitlab.com/qemu-project/qemu/-/issues/2524
|