Viewing profile — lcvw

I definitely want to do a post on confidential computing as well. Super cool stuff.

I think consumer devices should have opt-outs for sure. But personally I am much more comfortable with myself and my family having fully locked down apple phones then anything else…

I mean, all tech can be used in different ways. My experience has been much more on the preventing root kits side, rather then vendor lock in. Yes, there can be exploits, but hardw…

I don’t think that is at all accurate. https://en.m.wikipedia.org/wiki/British_genocide

I’ve carved out a niche of very low level systems programming and optimization. I think it’ll be awhile before LLMs can do what I do. I also moved to to staff so I think a lot of w…

I see safety issues all the time, even from mid level and seniorish devs who are not 100% familiar with cpp. I think it really depends on your codebase. Things like parsers tend to…

I feel like he is missing the boat here. C++ is on a path to dying as a language because of a lack of safety features, and he’s talking about zero cost abstractions. Exceptions cau…

How could it be? The radiation wavelength is far too high to cause any sort of chemistry. I know there are those that will still believe it does though.

No because when the electricity is used it creates heat.

My understanding is that the theory behind nuclear winter is that all of the nuked cities will ignite, and the massive firestorms will eject ash into the upper atmosphere where it …

Doesn’t perf also support reverse callgraphs? I seem to remember doing this pretty easily with that.

That seems highly illegal. I’m not sure I believe that.

Isn’t excel subscription only now?

Is there a way to get your house (currently with hydronic gas heat) retrofitted for heat pumps that doesn’t result in either a ton of demo or ugly lines all over the exterior? I tr…

There is a legal loophole campaigns use where if a text message was sent by a human it’s not considered spam. So of course a program exists that dispatches the message you want to …

I don’t know about the past, but you can absolutely dereference userspace memory in ebpf.

As someone who uses bpf for security monitoring every day, every one of those problems is a has a workaround. And the only real competitor is writing a kernel module which has seri…

One of the stated benefits is that the compiler optimizer can optimize the regex state machine that gets created, resulting in significantly faster match times at runtime. There ar…

You can write ebpf programs in rust. Bpftrace generates programs from an awk like language, you can make the program however you want. Solana does it with rust, I don’t know what i…

I feel that this proposal defeats the entire purpose of ebpf. The point is to have a bytecode language that can do simple processing in the kernel. This code is frequently generate…

It’s worth noting the verifier doesn’t verify C code, it verifies the compiled ebpf bytecode. You can generate that bytecode from rust (the solana cryptocurrency does this) but you…

1. Using eBPF requires root 2. The verifier checks memory bounds access, guarantees termination in a certain number of instructions, and restricts function calls to a limited numbe…

It requires root to use, if someone has root they’ve already owned your system anyway.