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device: 0.924
graphic: 0.897
boot: 0.893
debug: 0.888
KVM: 0.853
performance: 0.701
semantic: 0.643
PID: 0.587
vnc: 0.486
other: 0.416
permissions: 0.393
network: 0.365
files: 0.269
socket: 0.120
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
```
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