If you can provide any kind of help, I appreciate it very much. I guess maybe the reason is that FVP configuration uses a KVM-unsupport CPU, but I do not know the right configuration, and the FVP documents does not mention anything about KVM. It will gathers CPU architecture information from sysfs and /proc/cpuinfo. You can also use the lscpu tool to get more information about the CPU architecture. I try three commands, "kvm-ok", "dmesg | grep KVM", "grep -E -o 'vmx|svm' /proc/cpuinfo", but all of them show negative results. For Intel CPU, issue the following command to verify that if your CPU support Intel VT CPU virtualization. The screenshots are shown in the attachments. After building the whole software stack, I try several commands but the results show that KVM does not work. Intel P7350 inside a comfy little HP DV5-1000US. build-poky/tmp-poky/work-shared/fvp-base/kernel-source/arch/arm64/configs/defconfig:CONFIG_KVM=yĢ.I follow the document. I followed all of the instructions to detect compatibility outlined in the KVM Tutorial found here ( namely the command grep vmx /proc/cpuinfoand it comes up with. layers/meta-arm/meta-arm-bsp/recipes-kernel/linux/files/tc0/defconfig:CONFIG_KVM=y
However, I still cannot boot KVM, the details are as follows:ġ.I make sure that two configuration files enable KVM, they are It is now clear to me that it is not a kernel bug.I follow the document, and I build a Linux-on-FVP environment successfully. BIOS does not have any option to enable (or disable) VMX. running VMs now needs a CPU supporting hardware > looks like hardware virtualization is required: "Virtualization core: Drop > Is it possible VirtualBox was also upgraded? Starting from version 6.1, it This command will grep /cpu/procinfo file and display if the CPU supports VT or not. To find out if your CPU supports VT using egrep command, run: egrep '(svmvmx)' /proc/cpuinfo.
> VirtualBox on 4.1 since the MSR is read-only after it's locked. Egrep is one of the variant of Grep command line utility which is used to search text files with regular expressions. So, I don't see how VMX was being used by If the output does not show that the kvm module is loaded, run. If the output includes kvmintel or kvmamd, the kvm hardware virtualization modules are loaded and your kernel meets the module requirements for OpenStack Compute. > FEATURE_CONTROL if the MSR is unlocked, i.e. To list the loaded kernel modules and verify that the kvm modules are loaded, run this command: lsmod grep kvm. > kernels, as of commit ef4d3bf19855 ("x86/cpu: Clear VMX feature flag if VMX So, what this will end up doing is just increase the number of context switches, possibly also adding a performance degradation. You also get the wrong answer, as you do by grepping /proc/cpuinfo. If the output is zero, then it means virtualization is not enabled at processor. In this case, if you base your number of threads off grepping lscpu you take another dependency (on the util-linux package), which isn’t needed. Output of above command should be non-zero. Login to Rocky Linux and open the terminal, run following grep command to verify whether virtualization is enabled at processor level or not.
> The difference is that the vmx flag in /proc/cpuinfo is cleared in recent Step 1) Verify Virtualization is Enabled or not. > 4.1, and "x86/cpu: VMX (outside TXT) disabled by BIOS" in 5.10. Run kvm-ok which will then check the various prerequisites for hardware virtualization are present: CPU flags BIOS enabled kvm/svm modules present. Install kvm-ok for your distro (from cpu-checker under Debian/Ubuntu). > VMX is disabled by BIOS FEATURE_CONTROL.VMX_OUTSIDE_SMX is 0 (bit 2 in MSR 2 The answer comes from the similar question brian99 pointed at. 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 tm lm. (In reply to Sean Christopherson from comment #5) here is the cpuinfo of a VT enabled machine. No idea on when this started after kernel 4.1.15. ************************************************************įlags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ht tm pbe syscall nx lm constant_tsc arch_perfmon pebs bts rep_good nopl cpuid aperfmperf pni dtes64 monitor ds_cpl est tm2 ssse3 cx16 xtpr pdcm lahf_lm pti dtherm 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 lm constant_tsc arch_perfmon pebs bts rep_good nopl aperfmperf pni dtes64 monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr pdcm lahf_lm dtherm tpr_shadow
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