Questions tagged [virtio]
The virtio tag has no usage guidance.
virtio
20
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Data corruption problem of using VirtioBlk driver in custom operating system on RISC-V
During the kernel initialization phase, I am able to read data correctly from the boot sector using the VirtioBlk driver. The data read at this stage is as expected.
However, after the kernel performs ...
0
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0
answers
262
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 ...
- 13
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22
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Does Windows as a host support virtio_vsocket?
Does Windows (as a host) and Hyper-v support virtio_tansport( virtio_vsocket)?
If supported, what are the advantages of hyperv_transport(hv_socket) over virtio_tansport(virtio_vsocket)?
How to select ...
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0
answers
12
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can virtio-net device write into descriptor table
Can the virtio-net device that's part of the VMM, write into the descriptor table entries or are they limited to only populating the used rings?
Secondly is the typical use for there to be 2 ...
- 1,523
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34
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Linux vhost kvm exit upon guest sending a packet
According deep-dive-virtio-networking-and-vhost-net a benefit of Vhost protocol (virtio-net guest driver & vhost-net host driver) is that when the Guest send a packet there is no need for the vCPU ...
- 179
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53
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How to check if free page reporting is supported by qemu?
I know that we can login into the QMP shell and run "device_add driver=virtio-balloon-pci,help" and see if there is "free-page-reporting" option or not but Is there any other way ...
1
vote
1
answer
471
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KVM Virtio-balloon: how to activate free page reporting feature on the device side?
I'm trying to get free page reporting running on my KVM guest (Ubuntu 22.04 server with custom kernel from upstream Linux 6.5). My host is Ubuntu 20.04 with 6.5 Linux. Free page reporting is listed as ...
- 2,484
2
votes
1
answer
197
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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
...
- 595
2
votes
2
answers
632
views
How do you turn on/off Linux kernel Virtio features?
Virtio documentation, like here, describes many feature bits that can be set or "negotiated" for a virtio-device. For instance, there is the VIRTIO_RING_F_EVENT_IDX feature that can be ...
- 2,484
0
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1
answer
183
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) ...
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0
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173
views
Enable RSS for virtio application ( dpdk version 21.11)
I'm using a Nutanix virtual machine to run a DPDK(Version 21.11)-based application.
Application is failing during rte_eth_dev_configure . For our application, RSS support is required.
eth_config....
0
votes
1
answer
1k
views
Who will configure virtio,mmio device register in qemu?
I want to enable virtio_net on qemu, virtio_net driver should return an error if the device id is zero (read from https://docs.oasis-open.org/virtio/virtio/v1.1/virtio-v1.1.html).
In qemu, 0x0A000000 ...
0
votes
1
answer
395
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.
...
- 800
0
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1
answer
1k
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virt-manager gnome guest, auto-resize after login does not work if I previous set manual display resolution
This is a Ubuntu 22.04 guest, gnonme, wayland session although the problem exists for the xorg session too.
To reproduce:
1 start with a working gnome session, that is, auto-resizing of guest is ...
- 7,003
1
vote
1
answer
761
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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