#xen — Public Fediverse posts
Live and recent posts from across the Fediverse tagged #xen, aggregated by home.social.
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Xen: 54 CVEs, 92% unpatched. Trust Score: C. Zero critical/high but 92% unpatched = silent risk. Patch your hypervisor now. #Xen #cybersecurity #infosec
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｢ The Xen Project has just announced the release of Xen 4.22, a major update to the open-source type-1 hypervisor which includes new x86 capabilities, better power management for ARM guests, stronger Xenstore resource controls, and carries on the project’s initial efforts in the area of RISC-V virtualization ｣
https://linuxiac.com/xen-4-22-hypervisor-brings-new-x86-features-and-better-arm-power-management/ -
｢ The Xen Project has just announced the release of Xen 4.22, a major update to the open-source type-1 hypervisor which includes new x86 capabilities, better power management for ARM guests, stronger Xenstore resource controls, and carries on the project’s initial efforts in the area of RISC-V virtualization ｣
https://linuxiac.com/xen-4-22-hypervisor-brings-new-x86-features-and-better-arm-power-management/ -
More AI news from AMD, re-use of the better parts of their Strix Halo yield for industrial use cases.
"Physical AI" aka robotics and edge use cases. Buzzword galore! 😆
Still remember when "edge" was the new buzzword Pepperidge Farm RemembersSomething I do find interesting is the claim of hard real-time assurances whilst virtualized with Xen.
Technically a guaranteed deadline of 2 years is hard real-time too, just as MS-DOS is an amazing real-time OS, but I'm sure that's not what they're talking about...
Any one got more info on the Xen claim? Haven't heard so much about them these days...
#amd #strixhalo #ai #EmbedddedSystems #PhysicalAI #edgecomputing #robotics #xen #virtualization #realtime #rtos #msdos
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More AI news from AMD, re-use of the better parts of their Strix Halo yield for industrial use cases.
"Physical AI" aka robotics and edge use cases. Buzzword galore! 😆
Still remember when "edge" was the new buzzword Pepperidge Farm Remembers
Something I do find interesting is the claim of hard real-time assurances whilst virtualized with Xen.
Technically a guaranteed deadline of 2 years is hard real-time too, just as MS-DOS is an amazing real-time OS, but I'm sure that's not what they're talking about...
Any one got more info on the Xen claim? Haven't heard so much about them these days...
#amd #strixhalo #ai #EmbedddedSystems #PhysicalAI #edgecomputing #robotics #xen #virtualization #realtime
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#Xen 4.22 was just released.
Read more at the news bulletin at the Linux trade organisation https://www.linuxfoundation.org/press/xen-project-releases-xen-4.22-strengthening-open-source-virtualization-for-cloud-embedded-and-automotive-systems-1Release highlights:
* guest suspend/resume power management for arm
* Removes long-deprecated legacy interfaces -
The Xen 4.22 hypervisor arrives with x86 FRED support, AMD Bus Lock Threshold, ARM guest suspend and resume, and Xenstore scalability improvements.
https://linuxiac.com/xen-4-22-hypervisor-brings-new-x86-features-and-better-arm-power-management/ -
The Xen 4.22 hypervisor arrives with x86 FRED support, AMD Bus Lock Threshold, ARM guest suspend and resume, and Xenstore scalability improvements.
https://linuxiac.com/xen-4-22-hypervisor-brings-new-x86-features-and-better-arm-power-management/ -
Reading up a bit on Linux containers
I wonder if the efficiency of them is close to that of freeBSD jails
#Containers #VM #freeBSD #jails #programming #XEN #networking
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Reading up a bit on Linux containers
I wonder if the efficiency of them is close to that of freeBSD jails
#Containers #VM #freeBSD #jails #programming #XEN #networking
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XenServer 9: Now from Citrix again – and not just for desktops
Citrix introduces XenServer 9 as a preview. The new major version updates the hypervisor and aligns it for all workload types.
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XenServer 9: Now from Citrix again – and not just for desktops
Citrix introduces XenServer 9 as a preview. The new major version updates the hypervisor and aligns it for all workload types.
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citrix XenServer 9 has been published today.
be aware of some changes:
* systemd "predictable" network interface names in dom0
* Host BIOS Boot Support has been removed
* Linux Bridge Network Stack has been removed
https://docs.xenserver.com/en-us/xenserver/9/whats-new
#citrix #XenServer #Xen -
XenServer 9: Jetzt wieder von Citrix – und nicht nur für Desktops
Citrix stellt XenServer 9 als Preview vor. Die neue Hauptversion aktualisiert den Hypervisor und richtet ihn auf alle Workload-Typen aus.
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XenServer 9: Jetzt wieder von Citrix – und nicht nur für Desktops
Citrix stellt XenServer 9 als Preview vor. Die neue Hauptversion aktualisiert den Hypervisor und richtet ihn auf alle Workload-Typen aus.
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What would be the equivalent of Scheduler KIST (a C-tor option at one time) in #Rust #Arti #tor? Certainly not an option in the future paradigm. A man pages for the Cargo modules at (crates.io)? We can see "low water" in Arti which is exactly the cure. But it appears that a priesthood of operators will be in control of the fine tuning the torrc once had.
- Tor network adversary obstructs and degrades service with traffic shaping techniques.
"active bandwidth perturbations"
https://arxiv.org/pdf/2605.05887- Threat Actor blocks tor from VMs
but TAILS not obstructed (virtuio pci, module xen uevent -- abstractions from hardware) -- pvh destroyed in Xen (libxl)
#TargetedHardware #LibrariesWeaponizedAgainstThePublic
#Qemu #KVM #Xen #Virtualization #Censorship #MT #TickTalk #SuperFilter -
What would be the equivalent of Scheduler KIST (a C-tor option at one time) in #Rust #Arti #tor? Certainly not an option in the future paradigm. A man pages for the Cargo modules at (crates.io)? We can see "low water" in Arti which is exactly the cure. But it appears that a priesthood of operators will be in control of the fine tuning the torrc once had.
- Tor network adversary obstructs and degrades service with traffic shaping techniques.
"active bandwidth perturbations"
https://arxiv.org/pdf/2605.05887- Threat Actor blocks tor from VMs
but TAILS not obstructed (virtuio pci, module xen uevent -- abstractions from hardware) -- pvh destroyed in Xen (libxl)
#TargetedHardware #LibrariesWeaponizedAgainstThePublic
#Qemu #KVM #Xen #Virtualization #Censorship #MT #TickTalk #SuperFilter -
as far as I understand
#Xen: What is the minimal hardware we need to emulate to get a VM? We might need to customise/change the operating system.
qemu(+kvm): Let's emulate the full PC with mainboard and all chipsets and everything. Damn that is slow. Lets reinvent optimised virtual hardware in the #VirtIO project.
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#Xen jetzt mit 5 Jahren Sicherheitssupport
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#Xen jetzt mit 5 Jahren Sicherheitssupport
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At @bawuenet we're in the process of upgrading our #Xen #xcpng hypervisors to #uefi boot. Of course, we automate things and want to be able to reinstall our hypervisors from network boot. Our EFI netboot system is based on #ipxe which means it can only load EFI binaries. But xcp-ng ships the Xen kernel as a multiboot2 based image.
As probably one of the most weird ways to solve this problem, I've decided to chainload #grub2 from iPXE and learned a bit! 🧵 -
At @bawuenet we're in the process of upgrading our #Xen #xcpng hypervisors to #uefi boot. Of course, we automate things and want to be able to reinstall our hypervisors from network boot. Our EFI netboot system is based on #ipxe which means it can only load EFI binaries. But xcp-ng ships the Xen kernel as a multiboot2 based image.
As probably one of the most weird ways to solve this problem, I've decided to chainload #grub2 from iPXE and learned a bit! 🧵 -
I wish this post by the Xen Project existed years ago when I was trying to understand the differences between Xen and KVM. Would have been a great jumping point to dig deeper.
https://xenproject.org/blog/xen-at-fosdem-real-world-conversations-about-xen-and-kvm/
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So rebooted into NixOS and after having compiled some food I've tried passing through the end devices using KVM. And well it works with KVM. So what is wrong with my #QubesOS aka. #Xen config then?
Also because I thought it was funny I also tried attaching the Intel A380 to a windows XP VM.
The generic driver for the video card doesn't work.
It has a generic audio driver that almost works. It matches the device but fails to start :p -
So rebooted into NixOS and after having compiled some food I've tried passing through the end devices using KVM. And well it works with KVM. So what is wrong with my #QubesOS aka. #Xen config then?
Also because I thought it was funny I also tried attaching the Intel A380 to a windows XP VM.
The generic driver for the video card doesn't work.
It has a generic audio driver that almost works. It matches the device but fails to start :p -
Oh, Xen cannot pcie passthrough "non endpoint devices" like KVM can. That makes things unnecessarily difficult...
Why can't I just passthrough the entire PCI-PCI bridge device?
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Oh, Xen cannot pcie passthrough "non endpoint devices" like KVM can. That makes things unnecessarily difficult...
Why can't I just passthrough the entire PCI-PCI bridge device?
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Sooo are we just going to ignore the vulnerability qsb-091-2023 "Xen Security Notice 1: winpvdrvbuild.xenproject.org potentially compromised"?
I do not see any more recent build of the XEN Windows PV Drivers.
Even the ones linked on the website https://xenproject.org/resources/downloads/ right now are only from 2023-07-13. Which is 11 days before that vulnerability was published.
Also the part that they replaced the executables with a warning text doesn't seem to apply to that website either...
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Sooo are we just going to ignore the vulnerability qsb-091-2023 "Xen Security Notice 1: winpvdrvbuild.xenproject.org potentially compromised"?
I do not see any more recent build of the XEN Windows PV Drivers.
Even the ones linked on the website https://xenproject.org/resources/downloads/ right now are only from 2023-07-13. Which is 11 days before that vulnerability was published.
Also the part that they replaced the executables with a warning text doesn't seem to apply to that website either...
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Each time I read stuff about Xen I want to prefer it. But then I see the benefit of running VMs and containers in parallel which is kind of not possible with Xen. Then I use bhyve/vmd/vmm/… again.
#Xen -
Is there any technical reason why one would consider using Xen (or XCP-ng) over KVM at this point?
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Is there any technical reason why one would consider using Xen (or XCP-ng) over KVM at this point?
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What do you think, what is the better thing to user for a home lab setup with 1 and maybe in 1-2 years a 2nd host that is also used as the main desktop.
Or should I go with a full on VCF install (just kidding, I'd at most I can run it nested, as I'd have almost 0 resources available once all of its management components have booted up)