bug: Unknown CPU warning for GenuineIntel Google #1845
Description
I confirm this bug has not already been reported
- I have searched the issues and this bug has not been reported previously
Intro
In #1838, I found the issue (warning):
$ sudo ./quickemu-new --vm Public/us.conf
Quickemu 4.9.9 using /usr/bin/qemu-system-x86_64 v8.2.2
- Host: Ubuntu 24.04.2 LTS running Linux 6.6.111+ idx-ide-1745570482312
**WARNING! Unknown CPU vendor 'GenuineIntel
Google' - cannot verify virtualisation support.
If virtualisation fails, check your CPU supports hardware virtualisation and it's enabled in firmware.**
- CPU: Intel(R) Xeon(R) CPU @ 2.20GHz
- CPU VM: host, 1 Socket(s), 2 Core(s), 2 Thread(s)
- RAM VM: 4G RAM
- BOOT: EFI (Linux), OVMF (/usr/share/OVMF/OVMF_CODE_4M.fd), EFI Vars (us/OVMF_VARS.fd), SecureBoot (off).
- Disk: us/disk.qcow2 (24G)
- Display: SDL, virtio-vga-gl, GL (on), VirGL (on) @ (1280 x 800)
- Sound: intel-hda (hda-micro)
- ssh: On host: ssh user@localhost -p 22220
- WebDAV: On guest: dav://localhost:9843/
- 9P: On guest: sudo mount -t 9p -o trans=virtio,version=9p2000.L,msize=104857600 Public-root ~/root
- Network: Bridged (br0)
- Monitor: On host: socat -,echo=0,icanon=0 unix-connect:us/us-monitor.socket
- Serial: On host: socat -,echo=0,icanon=0 unix-connect:us/us-serial.socket
- Process: Started Public/us.conf as us (8509)
My quickreport output:
----------------------------------
Quickemu 4.9.8
----------------------------------
Distro: Ubuntu 24.04.2 LTS
Kernel: Linux 6.6.111+ x86_64 Memory: 63G
GPU:
- Red Hat, Inc. Virtio SCSI
----------------------------------
curl 8.5.0
----------------------------------
Libraries: libcurl/8.5.0 OpenSSL/3.0.13 zlib/1.3 brotli/1.1.0 zstd/1.5.5 libidn2/2.3.7 libpsl/0.21.2 (+libidn2/2.3.7) libssh/0.10.6/openssl/zlib nghttp2/1.59.0 librtmp/2.3 OpenLDAP/2.6.7
Protocols: dict file ftp ftps gopher gophers http https imap imaps ldap ldaps mqtt pop3 pop3s rtmp rtsp scp sftp smb smbs smtp smtps telnet tftp
Features: alt-svc AsynchDNS brotli GSS-API HSTS HTTP2 HTTPS-proxy IDN IPv6 Kerberos Largefile libz NTLM PSL SPNEGO SSL threadsafe TLS-SRP UnixSockets zstd
----------------------------------
QEMU 8.2.2
----------------------------------
Available CPUs:
x86 486 (alias configured by machine type)
x86 486-v1
x86 Broadwell (alias configured by machine type)
x86 Broadwell-IBRS (alias of Broadwell-v3)
x86 Broadwell-noTSX (alias of Broadwell-v2)
x86 Broadwell-noTSX-IBRS (alias of Broadwell-v4)
x86 Broadwell-v1 Intel Core Processor (Broadwell)
x86 Broadwell-v2 Intel Core Processor (Broadwell, no TSX)
x86 Broadwell-v3 Intel Core Processor (Broadwell, IBRS)
x86 Broadwell-v4 Intel Core Processor (Broadwell, no TSX, IBRS)
x86 Cascadelake-Server (alias configured by machine type)
x86 Cascadelake-Server-noTSX (alias of Cascadelake-Server-v3)
x86 Cascadelake-Server-v1 Intel Xeon Processor (Cascadelake)
x86 Cascadelake-Server-v2 Intel Xeon Processor (Cascadelake) [ARCH_CAPABILITIES]
x86 Cascadelake-Server-v3 Intel Xeon Processor (Cascadelake) [ARCH_CAPABILITIES, no TSX]
x86 Cascadelake-Server-v4 Intel Xeon Processor (Cascadelake) [ARCH_CAPABILITIES, no TSX]
x86 Cascadelake-Server-v5 Intel Xeon Processor (Cascadelake) [ARCH_CAPABILITIES, EPT switching, XSAVES, no TSX]
x86 Conroe (alias configured by machine type)
x86 Conroe-v1 Intel Celeron_4x0 (Conroe/Merom Class Core 2)
x86 Cooperlake (alias configured by machine type)
x86 Cooperlake-v1 Intel Xeon Processor (Cooperlake)
x86 Cooperlake-v2 Intel Xeon Processor (Cooperlake) [XSAVES]
x86 Denverton (alias configured by machine type)
x86 Denverton-v1 Intel Atom Processor (Denverton)
x86 Denverton-v2 Intel Atom Processor (Denverton) [no MPX, no MONITOR]
x86 Denverton-v3 Intel Atom Processor (Denverton) [XSAVES, no MPX, no MONITOR]
x86 Dhyana (alias configured by machine type)
x86 Dhyana-v1 Hygon Dhyana Processor
x86 Dhyana-v2 Hygon Dhyana Processor [XSAVES]
x86 EPYC (alias configured by machine type)
x86 EPYC-Genoa (alias configured by machine type)
x86 EPYC-Genoa-v1 AMD EPYC-Genoa Processor
x86 EPYC-IBPB (alias of EPYC-v2)
x86 EPYC-Milan (alias configured by machine type)
x86 EPYC-Milan-v1 AMD EPYC-Milan Processor
x86 EPYC-Milan-v2 AMD EPYC-Milan-v2 Processor
x86 EPYC-Rome (alias configured by machine type)
x86 EPYC-Rome-v1 AMD EPYC-Rome Processor
x86 EPYC-Rome-v2 AMD EPYC-Rome Processor
x86 EPYC-Rome-v3 AMD EPYC-Rome-v3 Processor
x86 EPYC-Rome-v4 AMD EPYC-Rome-v4 Processor (no XSAVES)
x86 EPYC-v1 AMD EPYC Processor
x86 EPYC-v2 AMD EPYC Processor (with IBPB)
x86 EPYC-v3 AMD EPYC Processor
x86 EPYC-v4 AMD EPYC-v4 Processor
x86 GraniteRapids (alias configured by machine type)
x86 GraniteRapids-v1 Intel Xeon Processor (GraniteRapids)
x86 Haswell (alias configured by machine type)
x86 Haswell-IBRS (alias of Haswell-v3)
x86 Haswell-noTSX (alias of Haswell-v2)
x86 Haswell-noTSX-IBRS (alias of Haswell-v4)
x86 Haswell-v1 Intel Core Processor (Haswell)
x86 Haswell-v2 Intel Core Processor (Haswell, no TSX)
x86 Haswell-v3 Intel Core Processor (Haswell, IBRS)
x86 Haswell-v4 Intel Core Processor (Haswell, no TSX, IBRS)
x86 Icelake-Server (alias configured by machine type)
x86 Icelake-Server-noTSX (alias of Icelake-Server-v2)
x86 Icelake-Server-v1 Intel Xeon Processor (Icelake)
x86 Icelake-Server-v2 Intel Xeon Processor (Icelake) [no TSX]
x86 Icelake-Server-v3 Intel Xeon Processor (Icelake)
x86 Icelake-Server-v4 Intel Xeon Processor (Icelake)
x86 Icelake-Server-v5 Intel Xeon Processor (Icelake) [XSAVES]
x86 Icelake-Server-v6 Intel Xeon Processor (Icelake) [5-level EPT]
x86 IvyBridge (alias configured by machine type)
x86 IvyBridge-IBRS (alias of IvyBridge-v2)
x86 IvyBridge-v1 Intel Xeon E3-12xx v2 (Ivy Bridge)
x86 IvyBridge-v2 Intel Xeon E3-12xx v2 (Ivy Bridge, IBRS)
x86 KnightsMill (alias configured by machine type)
x86 KnightsMill-v1 Intel Xeon Phi Processor (Knights Mill)
x86 Nehalem (alias configured by machine type)
x86 Nehalem-IBRS (alias of Nehalem-v2)
x86 Nehalem-v1 Intel Core i7 9xx (Nehalem Class Core i7)
x86 Nehalem-v2 Intel Core i7 9xx (Nehalem Core i7, IBRS update)
x86 Opteron_G1 (alias configured by machine type)
x86 Opteron_G1-v1 AMD Opteron 240 (Gen 1 Class Opteron)
x86 Opteron_G2 (alias configured by machine type)
x86 Opteron_G2-v1 AMD Opteron 22xx (Gen 2 Class Opteron)
x86 Opteron_G3 (alias configured by machine type)
x86 Opteron_G3-v1 AMD Opteron 23xx (Gen 3 Class Opteron)
x86 Opteron_G4 (alias configured by machine type)
x86 Opteron_G4-v1 AMD Opteron 62xx class CPU
x86 Opteron_G5 (alias configured by machine type)
x86 Opteron_G5-v1 AMD Opteron 63xx class CPU
x86 Penryn (alias configured by machine type)
x86 Penryn-v1 Intel Core 2 Duo P9xxx (Penryn Class Core 2)
x86 SandyBridge (alias configured by machine type)
x86 SandyBridge-IBRS (alias of SandyBridge-v2)
x86 SandyBridge-v1 Intel Xeon E312xx (Sandy Bridge)
x86 SandyBridge-v2 Intel Xeon E312xx (Sandy Bridge, IBRS update)
x86 SapphireRapids (alias configured by machine type)
x86 SapphireRapids-v1 Intel Xeon Processor (SapphireRapids)
x86 SapphireRapids-v2 Intel Xeon Processor (SapphireRapids)
x86 SierraForest (alias configured by machine type)
x86 SierraForest-v1 Intel Xeon Processor (SierraForest)
x86 Skylake-Client (alias configured by machine type)
x86 Skylake-Client-IBRS (alias of Skylake-Client-v2)
x86 Skylake-Client-noTSX-IBRS (alias of Skylake-Client-v3)
x86 Skylake-Client-v1 Intel Core Processor (Skylake)
x86 Skylake-Client-v2 Intel Core Processor (Skylake, IBRS)
x86 Skylake-Client-v3 Intel Core Processor (Skylake, IBRS, no TSX)
x86 Skylake-Client-v4 Intel Core Processor (Skylake, IBRS, no TSX) [IBRS, XSAVES, no TSX]
x86 Skylake-Server (alias configured by machine type)
x86 Skylake-Server-IBRS (alias of Skylake-Server-v2)
x86 Skylake-Server-noTSX-IBRS (alias of Skylake-Server-v3)
x86 Skylake-Server-v1 Intel Xeon Processor (Skylake)
x86 Skylake-Server-v2 Intel Xeon Processor (Skylake, IBRS)
x86 Skylake-Server-v3 Intel Xeon Processor (Skylake, IBRS, no TSX)
x86 Skylake-Server-v4 Intel Xeon Processor (Skylake, IBRS, no TSX)
x86 Skylake-Server-v5 Intel Xeon Processor (Skylake, IBRS, no TSX) [IBRS, XSAVES, EPT switching, no TSX]
x86 Snowridge (alias configured by machine type)
x86 Snowridge-v1 Intel Atom Processor (SnowRidge)
x86 Snowridge-v2 Intel Atom Processor (Snowridge, no MPX)
x86 Snowridge-v3 Intel Atom Processor (Snowridge, no MPX) [XSAVES, no MPX]
x86 Snowridge-v4 Intel Atom Processor (Snowridge, no MPX) [no split lock detect, no core-capability]
x86 Westmere (alias configured by machine type)
x86 Westmere-IBRS (alias of Westmere-v2)
x86 Westmere-v1 Westmere E56xx/L56xx/X56xx (Nehalem-C)
x86 Westmere-v2 Westmere E56xx/L56xx/X56xx (IBRS update)
x86 athlon (alias configured by machine type)
x86 athlon-v1 QEMU Virtual CPU version 2.5+
x86 core2duo (alias configured by machine type)
x86 core2duo-v1 Intel(R) Core(TM)2 Duo CPU T7700 @ 2.40GHz
x86 coreduo (alias configured by machine type)
x86 coreduo-v1 Genuine Intel(R) CPU T2600 @ 2.16GHz
x86 kvm32 (alias configured by machine type)
x86 kvm32-v1 Common 32-bit KVM processor
x86 kvm64 (alias configured by machine type)
x86 kvm64-v1 Common KVM processor
x86 n270 (alias configured by machine type)
x86 n270-v1 Intel(R) Atom(TM) CPU N270 @ 1.60GHz
x86 pentium (alias configured by machine type)
x86 pentium-v1
x86 pentium2 (alias configured by machine type)
x86 pentium2-v1
x86 pentium3 (alias configured by machine type)
x86 pentium3-v1
x86 phenom (alias configured by machine type)
x86 phenom-v1 AMD Phenom(tm) 9550 Quad-Core Processor
x86 qemu32 (alias configured by machine type)
x86 qemu32-v1 QEMU Virtual CPU version 2.5+
x86 qemu64 (alias configured by machine type)
x86 qemu64-v1 QEMU Virtual CPU version 2.5+
x86 base base CPU model type with no features enabled
x86 host processor with all supported host features
x86 max Enables all features supported by the accelerator in the current host
Recognized CPUID flags:
3dnow 3dnowext 3dnowprefetch abm ace2 ace2-en acpi adx aes amd-no-ssb
amd-psfd amd-ssbd amd-stibp amx-bf16 amx-complex amx-fp16 amx-int8
amx-tile apic arat arch-capabilities arch-lbr auto-ibrs avic avx avx-ifma
avx-ne-convert avx-vnni avx-vnni-int8 avx2 avx512-4fmaps avx512-4vnniw
avx512-bf16 avx512-fp16 avx512-vp2intersect avx512-vpopcntdq avx512bitalg
avx512bw avx512cd avx512dq avx512er avx512f avx512ifma avx512pf
avx512vbmi avx512vbmi2 avx512vl avx512vnni bmi1 bmi2 bus-lock-detect cid
cldemote clflush clflushopt clwb clzero cmov cmp-legacy cmpccxadd
core-capability cr8legacy cx16 cx8 dca de decodeassists ds ds-cpl dtes64
erms est extapic f16c fb-clear fbsdp-no flush-l1d flushbyasid fma fma4
fpu fsgsbase fsrc fsrm fsrs full-width-write fxsr fxsr-opt fzrm gds-no
gfni hle ht hypervisor ia64 ibpb ibpb-brtype ibrs ibrs-all ibs intel-pt
intel-pt-lip invpcid invtsc kvm-asyncpf kvm-asyncpf-int
kvm-hint-dedicated kvm-mmu kvm-msi-ext-dest-id kvm-nopiodelay
kvm-poll-control kvm-pv-eoi kvm-pv-ipi kvm-pv-sched-yield
kvm-pv-tlb-flush kvm-pv-unhalt kvm-steal-time kvmclock kvmclock
kvmclock-stable-bit la57 lahf-lm lbrv lfence-always-serializing lm lwp
mca mcdt-no mce md-clear mds-no misalignsse mmx mmxext monitor movbe
movdir64b movdiri mpx msr mtrr no-nested-data-bp nodeid-msr npt nrip-save
null-sel-clr-base nx osvw pae pat pause-filter pbe pbrsb-no pcid
pclmulqdq pcommit pdcm pdpe1gb perfctr-core perfctr-nb pfthreshold pge
phe phe-en pks pku pmm pmm-en pn pni popcnt prefetchiti pschange-mc-no
psdp-no pse pse36 rdctl-no rdpid rdrand rdseed rdtscp rsba rtm
sbdr-ssdp-no sbpb sep serialize sgx sgx-aex-notify sgx-debug sgx-edeccssa
sgx-exinfo sgx-kss sgx-mode64 sgx-provisionkey sgx-tokenkey sgx1 sgx2
sgxlc sha-ni skinit skip-l1dfl-vmentry smap smep smx spec-ctrl
split-lock-detect srso-no srso-user-kernel-no ss ssb-no ssbd sse sse2
sse4.1 sse4.2 sse4a ssse3 stibp stibp-always-on svm svm-lock
svme-addr-chk syscall taa-no tbm tce tm tm2 topoext tsc tsc-adjust
tsc-deadline tsc-scale tsx-ctrl tsx-ldtrk umip v-vmsave-vmload vaes vgif
virt-ssbd vmcb-clean vme vmx vmx-activity-hlt vmx-activity-shutdown
vmx-activity-wait-sipi vmx-any-errcode vmx-apicv-register vmx-apicv-vid
vmx-apicv-x2apic vmx-apicv-xapic vmx-cr3-load-noexit vmx-cr3-store-noexit
vmx-cr8-load-exit vmx-cr8-store-exit vmx-desc-exit
vmx-enable-user-wait-pause vmx-encls-exit vmx-entry-ia32e-mode
vmx-entry-load-bndcfgs vmx-entry-load-efer vmx-entry-load-pat
vmx-entry-load-perf-global-ctrl vmx-entry-load-pkrs
vmx-entry-load-rtit-ctl vmx-entry-noload-debugctl vmx-ept vmx-ept-1gb
vmx-ept-2mb vmx-ept-advanced-exitinfo vmx-ept-execonly vmx-eptad
vmx-eptp-switching vmx-exit-ack-intr vmx-exit-clear-bndcfgs
vmx-exit-clear-rtit-ctl vmx-exit-load-efer vmx-exit-load-pat
vmx-exit-load-perf-global-ctrl vmx-exit-load-pkrs
vmx-exit-nosave-debugctl vmx-exit-save-efer vmx-exit-save-pat
vmx-exit-save-preemption-timer vmx-flexpriority vmx-hlt-exit vmx-ins-outs
vmx-intr-exit vmx-invept vmx-invept-all-context vmx-invept-single-context
vmx-invept-single-context vmx-invept-single-context-noglobals
vmx-invlpg-exit vmx-invpcid-exit vmx-invvpid vmx-invvpid-all-context
vmx-invvpid-single-addr vmx-io-bitmap vmx-io-exit vmx-monitor-exit
vmx-movdr-exit vmx-msr-bitmap vmx-mtf vmx-mwait-exit vmx-nmi-exit
vmx-page-walk-4 vmx-page-walk-5 vmx-pause-exit vmx-ple vmx-pml
vmx-posted-intr vmx-preemption-timer vmx-rdpmc-exit vmx-rdrand-exit
vmx-rdseed-exit vmx-rdtsc-exit vmx-rdtscp-exit vmx-secondary-ctls
vmx-shadow-vmcs vmx-store-lma vmx-true-ctls vmx-tsc-offset
vmx-tsc-scaling vmx-unrestricted-guest vmx-vintr-pending vmx-vmfunc
vmx-vmwrite-vmexit-fields vmx-vnmi vmx-vnmi-pending vmx-vpid
vmx-wbinvd-exit vmx-xsaves vmx-zero-len-inject vnmi vpclmulqdq waitpkg
wbnoinvd wdt x2apic xcrypt xcrypt-en xfd xgetbv1 xop xsave xsavec
xsaveerptr xsaveopt xsaves xstore xstore-en xtpr
----------------------------------
CPU
----------------------------------
Architecture: x86_64
CPU op-mode(s): 32-bit, 64-bit
Address sizes: 46 bits physical, 48 bits virtual
Byte Order: Little Endian
CPU(s): 16
On-line CPU(s) list: 0-15
Vendor ID: GenuineIntel
Model name: Intel(R) Xeon(R) CPU @ 2.20GHz
CPU family: 6
Model: 79
Thread(s) per core: 2
Core(s) per socket: 8
Socket(s): 1
Stepping: 0
BogoMIPS: 4399.99
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 rep_good nopl xtopology nonstop_tsc cpuid tsc_known_freq pni pclmulqdq vmx ssse3 fma cx16 pcid sse4_1 sse4_2 x2apic movbe popcnt aes xsave avx f16c rdrand hypervisor lahf_lm abm 3dnowprefetch pti ssbd ibrs ibpb stibp tpr_shadow flexpriority ept vpid ept_ad fsgsbase tsc_adjust bmi1 hle avx2 smep bmi2 erms invpcid rtm rdseed adx smap xsaveopt arat vnmi md_clear arch_capabilities
Virtualization: VT-x
Hypervisor vendor: KVM
Virtualization type: full
L1d cache: 256 KiB (8 instances)
L1i cache: 256 KiB (8 instances)
L2 cache: 2 MiB (8 instances)
L3 cache: 55 MiB (1 instance)
NUMA node(s): 1
NUMA node0 CPU(s): 0-15
Vulnerability Gather data sampling: Not affected
Vulnerability Indirect target selection: Mitigation; Aligned branch/return thunks
Vulnerability Itlb multihit: Not affected
Vulnerability L1tf: Mitigation; PTE Inversion; VMX flush not necessary, SMT vulnerable
Vulnerability Mds: Mitigation; Clear CPU buffers; SMT Host state unknown
Vulnerability Meltdown: Mitigation; PTI
Vulnerability Mmio stale data: Vulnerable: Clear CPU buffers attempted, no microcode; SMT Host state unknown
Vulnerability Reg file data sampling: Not affected
Vulnerability Retbleed: Mitigation; IBRS
Vulnerability Spec rstack overflow: Not affected
Vulnerability Spec store bypass: Mitigation; Speculative Store Bypass disabled via prctl
Vulnerability Spectre v1: Mitigation; usercopy/swapgs barriers and __user pointer sanitization
Vulnerability Spectre v2: Mitigation; IBRS; IBPB conditional; STIBP conditional; RSB filling; PBRSB-eIBRS Not affected; BHI SW loop, KVM SW loop
Vulnerability Srbds: Not affected
Vulnerability Tsa: Not affected
Vulnerability Tsx async abort: Mitigation; Clear CPU buffers; SMT Host state unknown
Vulnerability Vmscape: Not affected
This machine is on Google Cloud Platform.