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architecture: 0.852
performance: 0.830
files: 0.819
socket: 0.788
vnc: 0.777
ppc: 0.774
network: 0.741
permissions: 0.734
graphic: 0.728
PID: 0.724
register: 0.723
kernel: 0.672
VMM: 0.648
boot: 0.641
risc-v: 0.639
semantic: 0.638
mistranslation: 0.631
hypervisor: 0.594
arm: 0.543
peripherals: 0.531
TCG: 0.531
virtual: 0.513
i386: 0.503
x86: 0.466
debug: 0.458
user-level: 0.411
KVM: 0.335
assembly: 0.279

improve error message, when using raspi3 and RAM>4G

Running `qemu-system-aarch64 image-aarch64.iso --machine raspi3 -m 8G` prints this error message:

```
Unexpected error in visit_type_uintN() at /builddir/build/BUILD/qemu-3.0.0/qapi/qapi-visit-core.c:164:
qemu-system-aarch64: Parameter 'vcram-base' expects uint32_t
```

The problem is, that you musn't use more than 4 GB RAM for machine raspi3. As it took me some time to figure that out, I'd be glad, if you can print better error message, like you do, when using more than 4 CPU cores with machine raspi3:

```
Invalid SMP CPUs 8. The max CPUs supported by machine 'raspi3' is 4 
```

I've submitted a patch to the list: http://patchwork.ozlabs.org/patch/1067963/

With it, QEMU will give this error instead:

qemu-system-aarch64: Requested ram size is too large for this machine: maximum is 1GB

(Note that the maximum is 1GB, not 4GB -- it's just that values between 1 and 4GB happened not to make QEMU crash, though it wouldn't handle them very usefully before.)


Improved diagnostic message is now in master and will be in QEMU 4.1.


Fixed here:
https://git.qemu.org/?p=qemu.git;a=commitdiff;h=ff3dcf28c0b7a3ac261