Re: image works in native but not in vm when -cpu is set to host

[daggs]

Greetings Nerijus,

> Sent: Friday, November 27, 2020 at 11:34 AM
> From: "Nerijus Baliunas via" <qemu-discuss@nongnu.org>
> To: qemu-discuss@nongnu.org
> Subject: Re: image works in native but not in vm when -cpu is set to host
>
> Please provide them by text here, the link does not work. Regards, Nerijus
here:
vm:
Architecture:        x86_64
CPU op-mode(s):      32-bit, 64-bit
Byte Order:          Little Endian
Address sizes:       40 bits physical, 48 bits virtual
CPU(s):              2
On-line CPU(s) list: 0,1
Thread(s) per core:  2
Core(s) per socket:  1
Socket(s):           1
NUMA node(s):        1
Vendor ID:           GenuineIntel
CPU family:          6
Model:               158
Model name:          Intel(R) Pentium(R) CPU G4560 @ 3.50GHz
Stepping:            9
CPU MHz:             3503.998
BogoMIPS:            7010.99
Virtualization:      VT-x
Hypervisor vendor:   KVM
Virtualization type: full
L1d cache:           32K
L1i cache:           32K
L2 cache:            4096K
L3 cache:            16384K
NUMA node0 CPU(s):   0,1
Flags:               fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca 
cmov pat pse36 clflush mmx fxsr sse sse2 ss ht syscall nx pdpe1gb rdtscp lm 
constant_tsc arch_perfmon rep_good nopl xtopology cpuid tsc_known_freq pni 
pclmulqdq vmx ssse3 cx16 pcid sse4_1 sse4_2 x2apic movbe popcnt 
tsc_deadline_timer aes xsave rdrand hypervisor lahf_lm abm 3dnowprefetch 
cpuid_fault invpcid_single pti ibrs ibpb stibp tpr_shadow vnmi flexpriority ept 
vpid ept_ad fsgsbase tsc_adjust smep erms invpcid mpx rdseed smap clflushopt 
xsaveopt xsavec xgetbv1 xsaves arat umip arch_capabilities
native:
Architecture:                    x86_64
CPU op-mode(s):                  32-bit, 64-bit
Byte Order:                      Little Endian
Address sizes:                   39 bits physical, 48 bits virtual
CPU(s):                          4
On-line CPU(s) list:             0-3
Thread(s) per core:              2
Core(s) per socket:              2
Socket(s):                       1
NUMA node(s):                    1
Vendor ID:                       GenuineIntel
CPU family:                      6
Model:                           158
Model name:                      Intel(R) Pentium(R) CPU G4560 @ 3.50GHz
Stepping:                        9
CPU MHz:                         1869.666
CPU max MHz:                     3500.0000
CPU min MHz:                     800.0000
BogoMIPS:                        6999.82
Virtualization:                  VT-x
L1d cache:                       64 KiB
L1i cache:                       64 KiB
L2 cache:                        512 KiB
L3 cache:                        3 MiB
NUMA node0 CPU(s):               0-3
Vulnerability Itlb multihit:     KVM: Mitigation: Split huge pages
Vulnerability L1tf:              Mitigation; PTE Inversion; VMX conditional 
cache flushes, SMT vulnerable
Vulnerability Mds:               Vulnerable: Clear CPU buffers attempted, no 
microcode; SMT vulnerable
Vulnerability Meltdown:          Mitigation; PTI
Vulnerability Spec store bypass: Vulnerable
Vulnerability Spectre v1:        Mitigation; usercopy/swapgs barriers and 
__user pointer sanitization
Vulnerability Spectre v2:        Mitigation; Full generic retpoline, IBPB 
conditional, IBRS_FW, STIBP conditional, RSB filling
Vulnerability Srbds:             Vulnerable: No microcode
Vulnerability Tsx async abort:   Not affected
Flags:                           fpu vme de pse tsc msr pae mce cx8 apic sep 
mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe 
syscall nx pdpe1gb rdtscp lm constant_tsc art arch_perfmon pebs bts rep_good 
nopl xtopology nonstop_tsc cpuid aperfmperf pni pclmulqdq dtes64 monitor ds_cpl 
vmx est tm2 ssse3 sdbg cx16 xtpr pdcm pcid sse4_1 sse4_2 x2apic movbe popcnt 
tsc_deadline_timer aes xsave rdrand lahf_lm abm 3dnowprefetch cpuid_fault epb 
invpcid_single pti ibrs ibpb stibp tpr_shadow vnmi flexpriority ept vpid ept_ad 
fsgsbase tsc_adjust smep erms invpcid mpx rdseed smap clflushopt intel_pt 
xsaveopt xsavec xgetbv1 xsaves dtherm arat pln pts hwp hwp_notify 
hwp_act_window hwp_epp

thanks for the help.

Dagg.