architecture: 0.976
virtual: 0.966
device: 0.924
graphic: 0.897
boot: 0.893
debug: 0.888
KVM: 0.853
performance: 0.701
register: 0.691
arm: 0.647
semantic: 0.643
peripherals: 0.598
PID: 0.587
vnc: 0.486
mistranslation: 0.445
risc-v: 0.398
ppc: 0.393
permissions: 0.393
kernel: 0.369
network: 0.365
hypervisor: 0.311
TCG: 0.296
user-level: 0.291
files: 0.269
VMM: 0.206
assembly: 0.196
socket: 0.120
x86: 0.113
i386: 0.088

Nested kvm-svm does not work since f5cc5a5c16
Description of problem:
Nested SVM virtualization seems to not work. I bisected this to f5cc5a5c16.
Steps to reproduce:
1. Boot up a Linux guest such as the Debian Live CD with -accel kvm -cpu host
2. ```dmesg | grep kvm; ls /dev/kvm```; # Shows that KVM is disabled within the guest
Additional information:
Details about my AMD host:
```
model name      : AMD Ryzen 5 2600 Six-Core Processor
flags           : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt pdpe1gb rdtscp lm constant_tsc rep_good nopl nonstop_tsc cpuid extd_apicid aperfmperf pni pclmulqdq monitor ssse3 fma cx16 sse4_1 sse4_2 movbe popcnt aes xsave avx f16c rdrand lahf_lm cmp_legacy svm extapic cr8_legacy abm sse4a misalignsse 3dnowprefetch osvw skinit wdt tce topoext perfctr_core perfctr_nb bpext perfctr_llc mwaitx cpb hw_pstate sme ssbd sev ibpb vmmcall fsgsbase bmi1 avx2 smep bmi2 rdseed adx smap clflushopt sha_ni xsaveopt xsavec xgetbv1 xsaves clzero irperf xsaveerptr arat npt lbrv svm_lock nrip_save tsc_scale vmcb_clean flushbyasid decodeassists pausefilter pfthreshold avic v_vmsave_vmload vgif overflow_recov succor smca
```