18 questions
0
votes
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11
views
QEMU Webcam Passthrough Issue: Webcam detected but showing nothing
I'm currently running a QEMU/KVM Virtual Machine on my Linux(Debian) host and using Ubuntu as the guest operating system (VM).
I'm trying to pass through a USB webcam to the VM using the USB Host ...
- 465
0
votes
0
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23
views
How to dynamically change the contrast of the image displayed on QEMU?
I am currently running a GUI application via Weston, all this running on QEMU.
Everything is fine but, for reason I cannot disclose, I would like to be able to control the contrast of the image ...
1
vote
0
answers
2k
views
QEMU vnc + opengl via virtio-vga-gl does not work, how to make it work or why does it not work?
In short, my question might be what's the configure options and/or the qemu-system-x86_64 command line options to run QEMU heedlessly with the virgl 3D feature turned on. By virgl 3D, I meant ...
- 23
2
votes
0
answers
324
views
LXC container with windows died
My LXC container with windows 11 died. I've installed official version of windows 11. Here is the log:
lxc info win11 --show-log
Name: win11
Status: STOPPED
Type: virtual-machine
Architecture: x86_64
...
- 615
0
votes
1
answer
383
views
reset virtio driver from device side
According virtio specification v1.2 there is a DEVICE_NEEDS_RESET flag in device status register is available.
If i set this flag with interrupt in virtio_pci_common_cfg.mxix_config (or 1-bit of ISR) ...
0
votes
1
answer
873
views
How to connect via virtio GUI running on host with GPIO in a QEMU-emulated virtual machine?
Some time ago, I asked a similar question, "How to connect GPIO in QEMU-emulated machine to an object in host?" and after some work, I have found a not perfect but satisfactory solution.
...
- 850
1
vote
2
answers
1k
views
How I combine a bash hookscript with a Perl hookscript for use with Proxmox?
I am trying to use Promox VE has the hypervisor for running VMs.
In one of my VMs, I have a hookscript that is written for the bash shell:
#!/bin/bash
if [ $2 == "pre-start" ]
then
echo &...
- 11
0
votes
1
answer
349
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How to apply multi VFs with virtio-net vDPA on host?
Recently, I was developing vDPA drivers for our NIC. When testing virtio-net vDPA with multi VFs, I found that kernel vDPA framework allocated same DMA addresses for multi VFs, then different VF ...
- 1
1
vote
1
answer
2k
views
Memory map address space on host from KVM/QEMU guest using virtio-mmio
I am running a direct kernel + Busybox based initrd guest using KVM/QEMU on an aarch64 host. The host platform is a ZynqMP SoC. My goal is to memory map the PL of the ZynqMP SoC from the guest VM ...
- 21