I'm running an ORWL m7-480 ( https://orwl.org/ ) and the install reported that my CPU is not compatible (I forget the exact wording/reason). My CPU info is below, and it does appear to have all the VTX-* etc tech needed?
I somehow stumbled onward anyhow (more by accident really) despite the warning, and it did kindof boot up afterward, although I then reverted to qubes 3 because I wanted to play more with my new ORWL toy. Perhaps there's a bug in the installer that's not understanding that my CPU is ok?
https://ark.intel.com/products/88199/Intel-Core-m7-6Y75-Processor-4M-Cache-up-to-3_10-GHz
(/proc/cpuinfo from dom0):-
processor : 3
vendor_id : GenuineIntel
cpu family : 6
model : 78
model name : Intel(R) Core(TM) m7-6Y75 CPU @ 1.20GHz
stepping : 3
microcode : 0xba
cpu MHz : 1200.090
cache size : 4096 KB
physical id : 0
siblings : 4
core id : 1
cpu cores : 2
apicid : 3
initial apicid : 3
fpu : yes
fpu_exception : yes
cpuid level : 22
wp : yes
flags : fpu de tsc msr pae mce cx8 apic sep mca cmov pat clflush acpi mmx fxsr sse sse2 ss ht syscall nx lm constant_tsc arch_perfmon rep_good nopl nonstop_tsc eagerfpu pni pclmulqdq monitor est ssse3 sdbg fma cx16 sse4_1 sse4_2 movbe popcnt tsc_deadline_timer aes xsave avx f16c rdrand hypervisor lahf_lm abm 3dnowprefetch ida arat epb pln pts dtherm fsgsbase bmi1 hle avx2 bmi2 erms rtm rdseed adx xsaveopt xsavec
bugs :
bogomips : 2400.18
clflush size : 64
cache_alignment : 64
address sizes : 39 bits physical, 48 bits virtual
power management: