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ReBarUEFI: Resizable BAR for almost any UEFI system

243 points · 77 comments · nateb2022

  1. bigwheels · · focus · HN ↗
    What does this do? I perused the README but I'm still clueless on what the purpose and use-case is for ReBAR.

    (Posting this under the assumption others will also appreciate a bit of quick context.)

    1. mathisfun123 · · focus · HN ↗
      > what the purpose and use-case is for ReBAR

      Literally the second sentence in the repo:

      > This provides performance benefits and is even required for Intel Arc GPUs to function optimally.

      1. qudat · · focus · HN ↗
        Your quote doesn’t help me understand this project at all.

        What is a BAR let alone a resizable one? Readme just jumps in, which is fine, but I’m not sure why this is on HN or why I should care.

        1. mathisfun123 · · focus · HN ↗
          i literally don't understand how people move through life - do you expect every single link on this site (or any site) to be ELI5 for you specifically? do you not understand that some things require effort/homework on your part?
          1. yunnpp · · focus · HN ↗
            What is the purpose of your comments? You failed to answer his question, then attack him for asking the question. Consider the two possibilities: a) doing that homework is easy, b) it's hard. If it's easy, you could have just posted the relevant link and be done. If it's hard, then his question is warranted. Either way, your comments add nothing. One can only conclude that you don't actually know how to answer the question. The real question, though, is: why even bother replying?

            Also, ReBAR can get complicated as you can see from other responses above. The articles on the web are also not really good as they tend to replicate marketing material and make vague statements about performance, but fail to explain how specifically performance is improved.

            1. mathisfun123 · · focus · HN ↗
              > What is the purpose of your comments?

              Same as his: to voice my frustration about something on the internet.

              1. Dylan16807 · · focus · HN ↗
                Your original comment sure didn't do that. It just gave an incorrect answer.
                1. mathisfun123 · · focus · HN ↗
                  What exactly was "incorrect" about it? He asked for a purpose and a use-case not an explanation.
                  1. Dylan16807 · · focus · HN ↗
                    > not an explanation

                    Wrong.

                    1. mathisfun123 · · focus · HN ↗
                      .... It's literally right there:

                      > I'm still clueless on what the purpose and use-case is for ReBAR

                      Are you seriously debating this?

                      1. Dylan16807 · · focus · HN ↗
                        They wanted a basic explanation in response to that.

                        Or to put it differently, I would take the sentence "He asked for a purpose and a use-case not an explanation." and replace the word "not" with a comma.

                        1. mathisfun123 · · focus · HN ↗
                          I quoted the direct response. I have no idea what you're debating.
                          1. Dylan16807 · · focus · HN ↗
                            I'm not sure how to put it simpler.

                            I agree with "He asked for a purpose and a use-case". (This is what your quote supports.)

                            I disagree with "not an explanation".

                            When asking for a purpose and use case, they were asking for an explanation.

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