291 lines
10 KiB
HTML
291 lines
10 KiB
HTML
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
<!DOCTYPE html>
|
||
|
||
<html lang="en">
|
||
<head>
|
||
<meta charset="utf-8">
|
||
<meta http-equiv="X-UA-Compatible" content="IE=edge">
|
||
<meta name="description" content="">
|
||
<meta name="viewport" content="width=device-width, initial-scale=1">
|
||
|
||
<title>FOSSY 2025 | Presentation: The big-endian RISC-V Linux Adventure</title>
|
||
|
||
<meta property="og:type" content="website" />
|
||
|
||
<link rel="icon" href="../../../static/build/img/favicon.ico" />
|
||
|
||
<!-- Cards -->
|
||
<meta property="og:title" content="FOSSY 2025 | Presentation: The big-endian RISC-V Linux Adventure">
|
||
<meta property="og:description" content="" />
|
||
<meta property="og:url" content="https://2025.fossy.us/schedule/presentation/302/">
|
||
<meta name="twitter:site" content="@conservancy">
|
||
<meta name="twitter:image:alt" content="FOSSY 2025 | Presentation: The big-endian RISC-V Linux Adventure" />
|
||
<meta name="twitter:card" content="summary">
|
||
<meta name="twitter:image" content="https://2025.fossy.us/static/build/img/conservancy_logo_tall_mono.png" />
|
||
<meta property="og:image" content="https://2025.fossy.us/static/build/img/conservancy_logo_tall_mono.png" />
|
||
<meta property="og:image:width" content="400" />
|
||
<meta property="og:image:height" content="400" />
|
||
|
||
|
||
<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/bootstrap-icons@1.11.3/font/bootstrap-icons.min.css">
|
||
<link rel='stylesheet' href='https://cdn.jsdelivr.net/npm/hack-font@3.3.0/build/web/hack.css'>
|
||
<link rel="stylesheet" href="https://unpkg.com/tachyons@4.12.0/css/tachyons.min.css">
|
||
<link href="../../../static/build/scss/app.css" rel="stylesheet" type="text/css" />
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
<script type="text/javascript">
|
||
var CONF_TZ = "US/Pacific";
|
||
</script>
|
||
</head>
|
||
<body class="">
|
||
|
||
<header class="bg-washed-yellow pa2"><div class="container"><strong>Archived:</strong> This is an archive from the 2025 conference. See <a href="https://fossy.us/">fossy.us</a> for the latest event.</div></header><header class="clearfix d-print-none">
|
||
|
||
|
||
|
||
|
||
<nav class="navbar navbar-expand-lg navbar-dark" style="background: rgb(19,119,82); background: linear-gradient(124deg, rgba(19,119,82,1) 0%, rgba(19,106,119,1) 100%); margin-bottom: 1rem">
|
||
<div class="container">
|
||
<h2 class="sans-serif f2 f1-ns b lh-solid tracked-tight mv0 mr3">
|
||
<a class="washed-yellow hover-washed-yellow" href="../../../index.html" style="text-decoration: none">
|
||
FOSSY 2025
|
||
</a>
|
||
</h2>
|
||
|
||
<button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarText" aria-controls="navbarText" aria-expanded="false" aria-label="Toggle navigation">
|
||
<span class="navbar-toggler-icon"></span>
|
||
</button>
|
||
|
||
|
||
|
||
<div class="collapse navbar-collapse" id="navbarText">
|
||
<ul class="navbar-nav mr-auto">
|
||
|
||
<li class="nav-item dropdown">
|
||
|
||
<a class="nav-link dropdown-toggle" href="index.html#" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
|
||
About
|
||
</a>
|
||
<div class="dropdown-menu">
|
||
|
||
|
||
|
||
<a class="dropdown-item " href="../../../about/index.html">About FOSSY</a>
|
||
|
||
</div>
|
||
|
||
</li>
|
||
|
||
<li class="nav-item dropdown">
|
||
|
||
<a class="nav-link dropdown-toggle" href="index.html#" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
|
||
Attend
|
||
</a>
|
||
<div class="dropdown-menu">
|
||
|
||
|
||
|
||
|
||
|
||
<a class="dropdown-item " href="../../../attend/tickets/index.html">Tickets</a>
|
||
|
||
<a class="dropdown-item " href="../../../travel/index.html">Travel and Lodging</a>
|
||
|
||
<a class="dropdown-item " href="../../../attend/volunteer.html">Volunteer</a>
|
||
|
||
<a class="dropdown-item " href="../../../attend/code-of-conduct.html">Code of Conduct</a>
|
||
|
||
<a class="dropdown-item " href="../../../attend/health-and-safety/index.html">Health and Safety</a>
|
||
|
||
<a class="dropdown-item " href="../../../attend/terms-and-conditions/index.html">Terms and Conditions</a>
|
||
|
||
<a class="dropdown-item " href="https://sfconservancy.org/privacy-policy/">Privacy policy</a>
|
||
|
||
</div>
|
||
|
||
</li>
|
||
|
||
<li class="nav-item dropdown">
|
||
|
||
<a class="nav-link dropdown-toggle" href="index.html#" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
|
||
Program
|
||
</a>
|
||
<div class="dropdown-menu">
|
||
|
||
|
||
|
||
<a class="dropdown-item " href="../../index.html">Schedule</a>
|
||
|
||
<a class="dropdown-item " href="../../../pages/tracks/index.html">Tracks</a>
|
||
|
||
<a class="dropdown-item " href="../../../call-for-proposals/index.html">Proposals</a>
|
||
|
||
</div>
|
||
|
||
</li>
|
||
|
||
<li class="nav-item ">
|
||
|
||
<a class="nav-link" href="../../../sponsorship/index.html">
|
||
Sponsorship
|
||
</a>
|
||
|
||
</li>
|
||
|
||
</ul>
|
||
</div>
|
||
</div>
|
||
</nav>
|
||
|
||
</header>
|
||
|
||
|
||
|
||
<main role="main" class="container">
|
||
<div class="row">
|
||
<div class="col page-header">
|
||
<h1 class="page-title">The big-endian RISC-V Linux Adventure</h1>
|
||
<p class="lead">
|
||
|
||
328 | <span class="presentation-time" data-starttime="2025-07-31T17:30:00" data-endtime="2025-07-31T18:15:00">Thu 31 Jul 5:30 p.m.–6:15 p.m.</span>
|
||
|
||
</p>
|
||
</div>
|
||
</div>
|
||
|
||
|
||
|
||
<div class="row">
|
||
<div class="col-md-12">
|
||
|
||
|
||
</div>
|
||
</div>
|
||
|
||
|
||
|
||
<div class="row presentation-details">
|
||
<div class="col-md-3">
|
||
<h2 class="mt-4">Presented by</h4>
|
||
<ul class="list-unstyled">
|
||
|
||
<li class="mb-4 pb-2">
|
||
|
||
<img src="https://secure.gravatar.com/avatar/08d94c1c08103fcdd9c14a8bdb316e39?s=120&d=mp" alt="Ben Dooks" class="rounded-circle img-fluid">
|
||
<p>
|
||
<strong><a href="../../../speaker/profile/450/index.html">Ben Dooks</a></strong><br />
|
||
|
||
|
||
<i class="bi-twitter-x"></i> <a href="https://x.com/bjdooks">@bjdooks</a><br />
|
||
|
||
|
||
<i class="bi-globe2"></i> <a href="http://www.fluff.org/ben/">http://www.fluff.org/ben/</a>
|
||
|
||
</p>
|
||
<div class="bio"><p>Long time open source contributor to the Linux kernel, qemu and other projects for both work and personal fun. Experience in various hardware and board bringup on arm32, arm64, riscv64 and electronic design.</p></div>
|
||
</p>
|
||
</li>
|
||
|
||
</ul>
|
||
</div>
|
||
|
||
<div class="col-md-9 presentation-abstract">
|
||
<h2 class="mt-4">Abstract</h4>
|
||
|
||
<div class="abstract pb-4"><p><p>The latest RISC-V ISA specification allows for runtime configuration of the data endian between little and big. Since no one had done this before, we decided to investigate how difficult it would be to get an prototype Linux implementation running in big endian on an emulated RISC-V system such as under QEMU.</p>
|
||
<p>The talk goes from the description of the new ISA feature, our initial analysis and the modifications to software such as the Linux kernel, QEMU and OpenSBI that where needed. This then goes into the issues that we found and how to fix them. This includes kvm and how that works with mixed endian kvm instances, and the modifications to kvmtool to make this work.</p>
|
||
<p>We conclude with how the project went, what we published and a call to arms to continue testing and fixing outstanding issues.</p></p></div>
|
||
|
||
|
||
|
||
<h2 class="mt-4">Videos</h4>
|
||
|
||
<iframe width="560" height="315" src="https://www.youtube.com/embed/Oy7LgqsHilU" title="YouTube video player" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share" referrerpolicy="strict-origin-when-cross-origin" allowfullscreen></iframe>
|
||
|
||
|
||
<p style="margin-top: 1rem">Available sources:</p>
|
||
<ul>
|
||
|
||
<li><a href="https://youtu.be/Oy7LgqsHilU" rel="nofollow">https://youtu.be/Oy7LgqsHilU</a></li>
|
||
|
||
</ul>
|
||
|
||
</div>
|
||
</div>
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
<script src="https://code.jquery.com/jquery-3.5.1.min.js" integrity="sha256-9/aliU8dGd2tb6OSsuzixeV4y/faTqgFtohetphbbj0=" crossorigin="anonymous"></script>
|
||
<script src="../../../static/build/js/app.js" type="text/javascript"></script>
|
||
<script src="../../../static/build/js/jquery.formset.js"></script>
|
||
<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.12.9/umd/popper.min.js" integrity="sha384-ApNbgh9B+Y1QKtv3Rn7W3mgPxhU9K/ScQsAP7hUibX39j7fakFPskvXusvfa0b4Q" crossorigin="anonymous"></script>
|
||
<script src="../../../static/build/bootstrap/js/bootstrap.bundle.min.js"></script>
|
||
|
||
<!--no-analytics-->
|
||
|
||
|
||
<script src="../../../static/build/js/luxon.min.js"></script>
|
||
<script src="../../../static/build/js/schedule.js" type="text/javascript"></script>
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
</main>
|
||
|
||
<footer class="footer mt-4 d-print-none">
|
||
<div class="container py-4">
|
||
<!-- <div class="row">
|
||
<div class="col-md-12 pb-12 text-center" style="margin-top: 0px;margin-bottom: 0px;border-bottom-style: solid;border-bottom-width: 0px;padding-bottom: 20px;">Wifi: FOSSY <i>(see Registration for older wifi)</i><br/>PIN: outreachy1000</div>
|
||
</div> -->
|
||
<div class="row">
|
||
<div class="col-md-4 pb-4">
|
||
<strong>FOSSY 2025</strong> <br>
|
||
July 31st – August 3rd 2025 <br>
|
||
Portland, OR<br>
|
||
Timezone: PDT - UTC-7 <br>
|
||
<a href="mailto:conference@sfconservancy.org" alt="Email"><i class="bi-envelope-fill"></i></a>
|
||
<a href="https://x.com/conservancy" alt="Twitter"><i class="bi-twitter-x"></i></a>
|
||
<a href="https://social.sfconservancy.org/conservancy" alt="Mastodon"><i class="bi-mastodon"></i></a>
|
||
<a href="https://www.facebook.com/SoftwareFreedomConservancy/" alt="Facebook"><i class="bi-facebook"></i></a>
|
||
<a href="https://www.youtube.com/@softwarefreedomconservancy8558/videos" alt="YouTube"><i class="bi-youtube"></i></a>
|
||
</div>
|
||
<div class="col-md-4 pb-4 text-center">
|
||
<p class="text-secondary">Brought to you by</p>
|
||
<a href="https://sfconservancy.org"><img src="../../../static/build/img/conservancy_logo.svg" alt="Software Freedom Conservancy logo" class="footer-image"></a>
|
||
</div>
|
||
<div class="col-md-4 pb-4 text-right">
|
||
<small>
|
||
<a href="index.html#">Back to top</a><br>
|
||
© 2025 <a href="https://sfconservancy.org/">Software Freedom Conservancy</a><br>
|
||
<a href="../../../credits/index.html">Credits</a>
|
||
</small>
|
||
</div>
|
||
</div>
|
||
</div>
|
||
</footer>
|
||
|
||
</body>
|
||
</html>
|