Questions tagged [qemu]
QEMU (short for "Quick EMUlator") is an open source machine emulator and virtualizer.
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10 views
Pass through ACPI devices in KVM
Is there a way to pass through ACPI devices to a KVM guest? I'm trying to create a debugging environment for an ACPI device.
-3
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0answers
19 views
Run the i386 environment on the aarch64 [on hold]
My problem is that I want to run an i386 or x86 environment on the aarch64 environment. Is this possible? Especially as there are programs that do this, for example ExaGear Windows Emulator, which ...
0
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0answers
16 views
Resizing a bootable partition getting error with cfdisk in Arch Linux
I am using Arch Linux in QEMU and have extra space on the disk but the partition where everything has been installed is now full as 3G’s did not get me so far so I am trying to add 5GB to it but when ...
0
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1answer
16 views
qemu - Scrollback in the monitor console
How can I scroll back in the monitor (compat_monitor0) in SDL and GTK views? I somewhere found it can be done with Ctrl+PgUp, but that does not work.
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0answers
11 views
How to update OpenGL on QEMU/RedHat QXL
I'm using Windows 7 guest on Fedora 29 host, and QEMU/KVM. My hardware does not support VT-d, however it supports VT-x, and I found that Windows guest works best with QXL video driver.
When I'm ...
0
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1answer
34 views
Arch linux not booting in QEMU
I am using QEMU to install arch linux on a 5G raw img disk and everytime and install it and reboot it boots back into arch but when i close qemu and try boot back into arch i am not prompted with the ...
1
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1answer
24 views
QeMU breaking after GCC upgrade
I've been developing for PowerPC systems for a while now and until recently have been relying on GCC 6.3, without problems.
Currently, due to different reasons, I had to switch from GCC 6.3 to GCC 8....
1
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0answers
28 views
How to boot a physical Linux partition with Qemu for Windows 10 X64 bit?
I have Debian Linux and Windows 10 installed alongside on my first hard drive. I want to start my Debian install from within Windows through Qemu and the Hax hypervisor. This is how is partitioned my ...
0
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0answers
14 views
Nested virtualization - x86_64 host and Arm guest
I am running a Linux-Arm virtual machine (type 2) from my Linux-x86_64 host,
and I am trying to figure out whether there is any way to enable type 1 virtualization on the guest-Linux-Arm machine.
I'...
0
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0answers
140 views
qemu + hax accelerator does not work to boot and run Debian on Windows 10
I tried to start QEMU with -accel hax to boot and run Debian on Windows 10,but it didn't work. This is what happened :
C:\Programmi\qemu\qemu-system-x86_64 -m 3072 -cpu Haswell,vendor=GenuineIntel,+...
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0answers
26 views
Having trouble building xv6 using QEMU
I followed all the instructions on the following page. And I installed QEMU and set the prefix to /usr/local on my machine.
I downloaded the xv6-public package into my /home directory. And I went to ...
1
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0answers
47 views
In Debian Using Android TV x86 Emulator Image with QEMU/KVM
If I am correct, Android Emulator uses KVM/QEMU for virtualization. Since there is no standalone Android TV x86 installer floating around I need to use these images to create myself a virtual Android ...
0
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0answers
43 views
qemu guest serial output to console of host
I have been searching for a solution for some time now and where I have found several threads that seem to have helped other people, those solutions do not seem to work for me. I would like to start a ...
-1
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0answers
20 views
QEMU crashed while trying to boot up i.MX6q device kernel
When tried to boot up Kernel uImage of an i.MX6q based embedded device, it seems that QEMU crashes with "Unable to handle kernel NULL pointer dereference at virtual address 00000044". Before crashing ...
1
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0answers
105 views
custom memory allocation vtable not supported trying to use qemu
I have a poweredgeT420 server and have been testing with qemu for virtualization.
I have been following some documentation and simply tried using the quick start guide from qemu quick start guide
...
0
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1answer
54 views
ArchLinux on a virtual Hard Drive - Will creating a desktop install on my real computer or the virtual one? [closed]
I have this command for powershell on windows to run arch Linux in QEMU:
.\qemu-system-x86_64 -boot d -cdrom E:\archlinux.iso -m 3G -hda linuxMint.img -drive format=raw,file=E:\Data
It loads up ...
0
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1answer
18 views
libvirt - can only boot from IDE devices?
I'm running Ubuntu 18.04 as host and windows 10 as guest, using QEMU/KVM as my hypervisor and libvirt as my management tool.
I have a nvme ssd /dev/nvmewin that I want to pass to the windows guest (...
0
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0answers
28 views
Is possible emulate a freebsd with architecture arm64 in docker?
After search in google i found the debootstrap used to emulate any architecture including arm64 in debian, is possible emulate the raspbian too (os for raspberry).
This is a video with the "how-to-do"...
0
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0answers
29 views
How to trace the register values of executed instructions in QEMU?
I can get the disassembled instructions with:
qemu-system-aarch64 -d in_asm
Sample format:
----------------
IN:
0xfffffff0: ea 5b e0 00 f0 ljmpw $0xf000:$0xe05b
----------------
IN:
...
0
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0answers
45 views
Can QEMU boot Linux from vmlinux instead of bzImage?
I've been using QEMU 3.0.0 happily with -kernel bzImage from Linux v4.19.
However, now I have another simulator (gem5) that boots from vmlinux, it would be convenient if I could boot both from the ...
0
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2answers
62 views
Windows 10 VM Bootloop
I've replaced my intel i5 with an amd ryzen 7. Now my Windows 10 VM (libvirt/qemu) won't boot, it just shows "preparing automatic repair" and then reboots.
I cannot boot from a rescue iso either. I ...
0
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0answers
132 views
How to redirect QEMU -serial output to both a file and the terminal or a port?
I would like to be able to both interact with the system via the command line, but also get the output to a file at the same time.
If I do:
qemu-sysem-x86_64 -serial stdio |& tee file
then it ...
1
vote
1answer
78 views
What's the `dynamips`, `iol` and `qemu`?
In my a virtual appliance, under the path, there are dynamips, iol, and qemu:
I want to know what's them, and the difference between them.
0
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1answer
146 views
QEMU User mode emulation
I am a student and trying to compile QEMU on MINGW32 in user emulation mode.
I read in certain document that, the following OS are supported in user space emulation:
1. Linux (referred as qemu-...
2
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0answers
207 views
No DHCP Reply on bridge with QEMU and TAP interface
I have a host machine running a virtual machine with QEMU and i want the DHCP server on the host providing an IP address to it.
I am using static ethernet addresses for the guests, so i start them up ...
1
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1answer
51 views
tap-bridge-tap : No LACP
I have two switches connected via TAP interfaces.
Each Virtual Switch port is connected to an individual TAP port and the TAP ports are joined via a Bridge.
SW1-port1 = TAP 11 <== BR121 ==> TAP ...
0
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0answers
15 views
Can't I acess /dev/nbdX(qemu device) via iSCSI?
I know if I create logical volume, it must be ok to read/write via iSCSI. But I wanna try acess qemu nbd device.
I create a qcow2 and mount on /dev/nbd0, and fdisk /dev/nbd0 -l shows:
Disk /dev/nbd0:...
0
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1answer
73 views
Windows XP crashes on startup when using Qemu
I installed a Windows XP image on my USB flash drive formatted as NTFS. It's for my Raspberry Pi 3. When I tried to install it on my Raspberry Pi, the installation hanged every single time. So I ...
1
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0answers
48 views
How to disable buffering for a LVM partition under QEMU KVM
I'm using Windows 10 under QEMU KVM on a Fedora 27 box. Disk for a VM is attached as a raw LVM partition with cache=none.
<disk type='block' device='disk' >
<driver name='qemu' type='raw'...
2
votes
1answer
158 views
Strategy for File System Permissions On KVM Shared Folder
I have a Ubuntu/KVM hypervisor environment that has access (via NFS) to ZFS data sets (aka file systems). I have been hosting the VM images on a ZFS file system which, although not the fastest thing ...
1
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1answer
734 views
What are the differences between sound devices in qemu shown by virt-manager?
I am trying to use qemu/kvm via virt-managet. I want to use Windows 10 guest in a Linux host.
When I add sound device, there are several models to choose from:
ac97
es1370
ich6
ich9
pcspk
sb16
How ...
0
votes
1answer
576 views
Unable to build QEMU 2.12 with WHPX (Windows Hypervisor Platform) enabled
[If this is in the wrong StackExchange feel free to redirect me.]
I've been interested in using QEMU for a while but also wish to use Hyper-V for Docker on Windows. I discovered that the new WHPX ...
2
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1answer
51 views
Is it possible to treat a thread as a core in QEMU?
When using a multi-threaded CPU, is it possible to treat a thread as a core to have double the available cores to the guest OS?
0
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0answers
172 views
QEMU launch vm with NIC/LAN bridge for PXE/IPXE boot
I'm using QEmu (2018.04.04) in Windows 10 64 bits
I'm trying to launch a VM to boot from a TFTP/PXE server in the network
so it must acquire IP from the DHCP/TFTP server and get the PXE payload
As ...
0
votes
1answer
39 views
qemu-nbd not creating partions
I was using qemu-nbd to mount .vdi virtual machine harddrives. However, qemu-nbd suddenly* stopped working.
My usual workflow was
# modprobe --verbose nbd
insmod /lib/modules/4.4.0-127-generic/...
0
votes
1answer
33 views
linux git corruption on qemu guest shutdown
I run ubuntu on qemu virtual box with this command:
"D:\Program Files\qemu\qemu-system-x86_64.exe" -hda myimage.img -nographic -enable-kvm -accel hax -enable-hax -m 1G -net user,hostfwd=tcp::22-:22 -...
0
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0answers
166 views
KVM passthrough on Dell R720xd
sorry for my english.
I can't setup gpu passthrough on Dell R720xd (have working R510 & ubuntu 16.04)
I have:
debian 9.4
qemu version: 2.8.1
libvirt version: 3.0.0
virt-manager 1.4.0
...
0
votes
0answers
67 views
How to map an address of a guest OS to host OS
Given a guest OS address on a virtual machine, how can I map it to host OS and vice versa.
I am running a guest OS (Ubuntu 16.04) using QEMU emulator (version 2.5.0 (Debian 1:2.5+dfsg-5ubuntu10.26)) ...
0
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0answers
118 views
Alpine Linux running under Qemu - set nameserver manually when using DHCP
I am running Alpine 3.7 under Qemu on a Chromebook and using DHCP to set the IP address etc.
The nameserver (as set in /etc/resolv.conf) is not correct (it's a 10. address presumably because of the ...
0
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0answers
214 views
Which CPU is being emulated by Qemu by default?
I'm currently running a VM without selecting a CPU type. How can I know which one is being emulated? Is there a way to ask this to the Qemu monitor?
Edit: Host machine is Windows 10 and guest is Plan ...
0
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0answers
168 views
run ubuntu on windows without vt-x - very slow
I want to run docker on a machine that does not support vt-x.
Since the only solution to that would be to change machines, I installed qemu and am installed lubuntu 12 i386.
However, everything is ...
1
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0answers
123 views
virt-install ListActivatableNames Connection is Closed
I'm trying to use virt-install to easily set up a vm. Silly me.
The endgame here is to have roughly ten of these bad boys running that all have to be able to communicate with one another via ssh, ...
1
vote
1answer
475 views
qemu -enable-kvm *slower* than pure emulation for x86_64
Running qemu-system-x86_64 -enable-kvm -cpu host -smp cores=4 hosted on an Intel Xeon/Core-2 (newgen, Family=6) or better machine (total number of cores on guest=24, total ram=196gb), and the guest ...
0
votes
1answer
1k views
How to set up NAT for Qemu with TAP backend? (Windows 10)
I want to use the TAP network backend instead of the default SLIRP that Qemu provides.
This is the batch file I use to create the VM (inspired by this):
@echo off
set "QEMUIMG=D:\user\VMs\Qemu\qemu\...
0
votes
1answer
48 views
Running containers on top of QEMU
I have a testing setup I'm trying to migrate to using VMs rather than bare metal as much as possible. The existing setup is structured to run everything within containers (LXC, specifically), and it ...
3
votes
1answer
450 views
Qemu share folder - 9pnet_virtio: no channels available for device
I try to run a qemu virtual machine having a folder shared with host. No matter what I do, I have always the same error: 9pnet_virtio: no channels available for device share.
Host machine is under ...
0
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0answers
751 views
How to set up Internet access for QEMU?
I followed many tutorials online for days and still could not set up internet access for QEMU. I followed this tutorial, but it did not work either. Basically the steps are, (copied)
The simplest ...
0
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1answer
1k views
How to emulate ARM64 programs in Windows X64 with Qemu?
I've downloaded the Windows ARM64 ISO from https://uup.rg-adguard.net/ and open it with Qemu as in this article. But Qemu is so slow to emulate the whole Windows ARM64 OS (I know emulation << ...
0
votes
0answers
38 views
Configure Debian Sparc64 on Qemu to get apt commands via SSH on guest
From this link, I have been able to do ssh from a Debian Sparc64 guest Qemu on a MacOS High Sierra host.
Now, I try to configure guest and host in order to use "apt-get install" on the Debian Sparc64 ...
2
votes
1answer
1k views
Use virt-manager on windows with cygwin
I current am trying to connect to a hyper visor server with virt-manager on a windows computer. The host is currently setup to run only as a TTY base server. And from my research, I've only read to ...
