Questions tagged [kvm]
KVM is the Kernel Virtual Machine, a virtualization hypervisor built into the Linux kernel.
1,058 questions
1 vote
0 answers
25 views
How to step over an "int 3" on x86_64 with KVM?
On the x86 platform, the int 3 instruction causes a breakpoint trap. For KVM, the Virtual CPUs can be configured to exit to the hypervisor on this trap, by enabling the flags KVM_GUESTDBG_ENABLE and ...
- 11
3 votes
1 answer
207 views
How to fix a libvirt network setup error
I am creating a new QEMU/KVM virtual machine using libvirt CLI in Debian Linux. According the tutorial, I must activate the default network using the following command: sudo virsh net-start default ...
- 93
0 votes
0 answers
62 views
Why do NFS-backed files remain visible in a VM after host umount when shared via virtiofs?
I am curious about the behavior of Virtual Machine. Environment There are two computers. 192.168.180.10: NFS Server Rocky Linux 9.6 192.168.160.30: VDSM Host (NFS Client) Rocky Linux 9.6 VDSM ...
- 101
2 votes
2 answers
870 views
KVM turning Linux kernel into a Type 1 Hypervisor
I’ve been reading about KVM, and I came across the statement: “When the KVM module is loaded, the Linux kernel itself becomes a Type 1 hypervisor.” I want to clarify if my understanding is correct ...
- 169
2 votes
3 answers
2k views
Why and how were KVM modules unexpectedly enabled in Ubuntu 24.04?
System: Ubuntu MATE 24.04.2 I tried to start a virtual machine under VirtualBox and received the following error: VirtualBox can't enable the AMD-V extension. Please disable the KVM kernel extension, ...
- 107
1 vote
0 answers
53 views
mount errors of /dev/vda when running virt-install with --inject-initrd option
I'm trying to automate installation of a debian machine with a preseed configuration file and despite a few hiccups here and there it seems to work. I am confused though why adding --inject-initrd ...
- 381
0 votes
0 answers
24 views
Unable to create libvirt domain - persmission denied reading OS .iso [duplicate]
When attempting to create a libvirt domain off a debian iso file using virt-manager, it fails with Could not open '/home/laur/Downloads/debian.iso': Permission denied error. The file has read access ...
- 804
0 votes
0 answers
47 views
Intel VM-exit EPT_VIOLATION error_code
I'm using trace-cmd on a Linux host running a qemu/kvm VM in order to check VM-exit events related to EPT_VIOLATION reason. root@eve-ng62:~# trace-cmd record -b 20000 -e kvm:kvm_page_fault -e kvm_exit ...
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