Re: [PATCH bpf-next v1 0/6] Introduce eBPF support for HID devices

On Fri, 25 Feb 2022, Greg KH wrote:

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I mean that if you need a bpf program to be loaded from userspace at boot to make your keyboard functional, then you need to have the root partition mounted (or put the program in the initrd) so udev can load it. Now if your keyboard is supposed to give the password used to decrypt your root partition but you need a bpf program on that said partition to make it functional, you are screwed :)

True, but that's why the HID boot protocol was designed for keyboards and mice, so that they "always" work. Yeah, I know many devices ignore it, oh well...

That's a very mild statement :)

*Most* of the recent modern HW doesn't support it as far as I can say.

Thanks,