$ cat /proc/cpuinfo

# ...
processor	: 3
vendor_id	: AuthenticAMD
cpu family	: 25
model		: 33
model name	: AMD Ryzen 5 5600X 6-Core Processor
stepping	: 0
microcode	: 0xffffffff
cpu MHz		: 3693.060
cache size	: 512 KB
physical id	: 0
siblings	: 4
core id		: 3
cpu cores	: 4
apicid		: 3
initial apicid	: 3
fpu		: yes
fpu_exception	: yes
cpuid level	: 13
wp		: yes
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 rdtscp lm constant_tsc art rep_good nopl nonstop_tsc extd_apicid pni pclmulqdq ssse3 cx16 sse4_1 sse4_2 movbe popcnt aes rdrand hypervisor lahf_lm cmp_legacy cr8_legacy abm sse4a misalignsse 3dnowprefetch rsb_ctxsw vmmcall fsgsbase bmi1 bmi2 rdseed clflushopt arat
bogomips	: 7386.12
TLB size	: 2560 4K pages
clflush size	: 64
cache_alignment	: 64
address sizes	: 48 bits physical, 48 bits virtual
power management:

$ cat /proc/cpuinfo | egrep --color 'siblings|cpu cores' | sort -u

cpu cores	: 2
siblings	: 2

$ cat /proc/cpuinfo | grep "processor" | wc -l
2

$ cat /proc/cpuinfo | grep "processor"
processor	: 0
processor	: 1

$ cat /proc/cpuinfo | grep "physical id" | uniq
physical id	: 0

$ cat /proc/cpuinfo | grep 'cpu cores' | head -n 1
cpu cores	: 2

$ lscpu

$ cat /proc/cpuinfo | egrep "siblings|cpu cores" | head -n 2
siblings	: 2
cpu cores	: 2

$ dmidecode -t processor | egrep 'Core Count|Thread Count' | head -n 2

	Core Count: 2
	Thread Count: 2

$ lscpu | egrep -i --color "virtualization\|svm|amd-v"
Virtualization:                     AMD-V