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Cake day: September 30th, 2025

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  • on these atomic distros where even something like syncthing involves shenanigans to keep active week to week? Ain’t happening.

    I don’t see why you couldn’t kexec into a new kernel. kexec will load a kernel into memory from an already running kernel, and jump into it. It’ll suck for the user as they’ll have to semi-reboot everytime they want HDMI 2.1, but it’s easy and doesn’t install anything.

    There’s also live patching, but I think that’ll be a bit of work.

    Of course the kernel needs to be compiled with those options enabled, but most distros do.

    Edit: And they probably won’t work with kernel lockdown/secure boot.



  • You’re going to have a hard time trying to get that working over the WAN (if that’s even possible).

    Wake on LAN is still encapsulated in an IP packet, so you can send it over the internet, and most WOL clients let you specify an IP. However your router will need to DNAT it to a broadcast address. Some routers have a check box for this (e.g. An ISP provided Technicolor router I have), some let you port forward to broadcast (e.g. Many routers, sometimes with workarounds), and some let you manually configure NAT (e.g. MikroTik routers).

    So it is possible, but forwarding public internet traffic to a broadcast address seems like a bad idea, and I wouldn’t recommend it. Why I know this: I used to do this in middle school, and it does work quite well.







  • SR-IOV works by presenting one device as many, which you can passthrough one of those to your VM. Meaning SR-IOV only works through PCIe passthrough, so you’d have to figure that out first. The GPU guides should get you most of the way there.

    Some distros include an ACS patch into their kernel (e.g. Proxmox, and I think CachyOS), which lets you passthrough devices without hardware support (but lacking some security features).

    I believe it might be possible to ‘passthrough’ the VF from the host without PCIe passthrough (I’ve only done this with containers though), but performance is often worse than just using a bridge.