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blog_os/blog/templates/first-edition/comments/allocating-frames.html
Philipp Oppermann 5aaee100c8 Archive comments of first edition (#504)
2018-12-09 17:31:37 +01:00

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<div id="isso-root"><div id="isso-32" class="isso-comment"><div class="avatar"><svg version="1.1" viewBox="0 0 48 48" preserveAspectRatio="xMinYMin meet" shape-rendering="crispEdges" data-hash="666df3217240"><rect x="0" y="0" width="56" height="56" style="fill: #f0f0f0"></rect><rect x="4" y="12" width="8" height="8" style="fill: #9abf88"></rect><rect x="36" y="12" width="8" height="8" style="fill: #9abf88"></rect><rect x="4" y="28" width="8" height="8" style="fill: #9abf88"></rect><rect x="36" y="28" width="8" height="8" style="fill: #9abf88"></rect><rect x="4" y="36" width="8" height="8" style="fill: #9abf88"></rect><rect x="36" y="36" width="8" height="8" style="fill: #9abf88"></rect><rect x="12" y="4" width="8" height="8" style="fill: #9abf88"></rect><rect x="28" y="4" width="8" height="8" style="fill: #9abf88"></rect><rect x="12" y="28" width="8" height="8" style="fill: #9abf88"></rect><rect x="28" y="28" width="8" height="8" style="fill: #9abf88"></rect><rect x="20" y="12" width="8" height="8" style="fill: #9abf88"></rect></svg></div><div class="text-wrapper"><div role="meta" class="isso-comment-header"><span class="author">Philipp Oppermann</span><span class="spacer">•</span><a href="#isso-32" class="permalink"><time title="Mon Nov 16 2015 01:26:09 GMT+0100 (Central European Standard Time)" datetime="2015-10-01T00:26:09Z">vor 4 Jahren</time></a><span class="note"></span></div><div class="text"><p>There is some interesting discussion on <a href="https://www.reddit.com/r/rust/comments/3sw52x/writing_an_os_in_rust_allocating_frames/">reddit</a>.</p></div><div class="isso-comment-footer"><span class="votes">-1</span><a href="#" class="upvote"><!-- Generator: IcoMoon.io --><svg width="16" height="16" viewBox="0 0 32 32" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" fill="gray">
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</a><a href="#" class="reply">Antworten</a></div><div class="isso-follow-up"></div></div></div><div id="isso-33" class="isso-comment isso-no-votes"><div class="avatar"><svg version="1.1" viewBox="0 0 48 48" preserveAspectRatio="xMinYMin meet" shape-rendering="crispEdges" data-hash="0bc2df00636d"><rect x="0" y="0" width="56" height="56" style="fill: #f0f0f0"></rect><rect x="4" y="28" width="8" height="8" style="fill: #f19670"></rect><rect x="36" y="28" width="8" height="8" style="fill: #f19670"></rect><rect x="4" y="36" width="8" height="8" style="fill: #f19670"></rect><rect x="36" y="36" width="8" height="8" style="fill: #f19670"></rect><rect x="12" y="28" width="8" height="8" style="fill: #f19670"></rect><rect x="28" y="28" width="8" height="8" style="fill: #f19670"></rect><rect x="12" y="36" width="8" height="8" style="fill: #f19670"></rect><rect x="28" y="36" width="8" height="8" style="fill: #f19670"></rect><rect x="20" y="12" width="8" height="8" style="fill: #f19670"></rect><rect x="20" y="20" width="8" height="8" style="fill: #f19670"></rect><rect x="20" y="36" width="8" height="8" style="fill: #f19670"></rect></svg></div><div class="text-wrapper"><div role="meta" class="isso-comment-header"><span class="author">Tobias Schottdorf</span><span class="spacer">•</span><a href="#isso-33" class="permalink"><time title="Mon Nov 16 2015 02:31:18 GMT+0100 (Central European Standard Time)" datetime="2015-10-01T01:31:18Z">vor 4 Jahren</time></a><span class="note"></span></div><div class="text"><p>&gt; Note that we need to clone the iterator because the order of areas in the memory map isn't specified.</p><p>Could you elaborate on that? I'm probably getting something wrong, but I can't reproduce issues omitting the clone:</p><p><a href="https://gist.github.com/tschottdorf/e1e0a4091136dd281ab3">https://gist.github.com/tsc...</a></p></div><div class="isso-comment-footer"><span class="votes">0</span><a href="#" class="upvote"><!-- Generator: IcoMoon.io --><svg width="16" height="16" viewBox="0 0 32 32" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" fill="gray">
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</a><a href="#" class="reply">Antworten</a></div><div class="isso-follow-up"><div id="isso-34" class="isso-comment isso-no-votes"><div class="avatar"><svg version="1.1" viewBox="0 0 48 48" preserveAspectRatio="xMinYMin meet" shape-rendering="crispEdges" data-hash="666df3217240"><rect x="0" y="0" width="56" height="56" style="fill: #f0f0f0"></rect><rect x="4" y="12" width="8" height="8" style="fill: #9abf88"></rect><rect x="36" y="12" width="8" height="8" style="fill: #9abf88"></rect><rect x="4" y="28" width="8" height="8" style="fill: #9abf88"></rect><rect x="36" y="28" width="8" height="8" style="fill: #9abf88"></rect><rect x="4" y="36" width="8" height="8" style="fill: #9abf88"></rect><rect x="36" y="36" width="8" height="8" style="fill: #9abf88"></rect><rect x="12" y="4" width="8" height="8" style="fill: #9abf88"></rect><rect x="28" y="4" width="8" height="8" style="fill: #9abf88"></rect><rect x="12" y="28" width="8" height="8" style="fill: #9abf88"></rect><rect x="28" y="28" width="8" height="8" style="fill: #9abf88"></rect><rect x="20" y="12" width="8" height="8" style="fill: #9abf88"></rect></svg></div><div class="text-wrapper"><div role="meta" class="isso-comment-header"><span class="author">Philipp Oppermann</span><span class="spacer">•</span><a href="#isso-34" class="permalink"><time title="Mon Nov 16 2015 14:18:18 GMT+0100 (Central European Standard Time)" datetime="2015-10-01T13:18:18Z">vor 4 Jahren</time></a><span class="note"></span></div><div class="text"><p>The `clone` is required because the <a href="https://doc.rust-lang.org/nightly/core/iter/trait.Iterator.html#method.min_by">min_by</a> function consumes the iterator. I updated that sentence. My initial reasoning was that we can't just use the next area in the iterator because Multiboot doesn't specify an increasing ordering. Thus we need to use `min_by` and clone the iterator.</p></div><div class="isso-comment-footer"><span class="votes">0</span><a href="#" class="upvote"><!-- Generator: IcoMoon.io --><svg width="16" height="16" viewBox="0 0 32 32" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" fill="gray">
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</a><a href="#" class="reply">Antworten</a></div><div class="isso-follow-up"><div id="isso-38" class="isso-comment isso-no-votes"><div class="avatar"><svg version="1.1" viewBox="0 0 48 48" preserveAspectRatio="xMinYMin meet" shape-rendering="crispEdges" data-hash="f3d5b0e5e954"><rect x="0" y="0" width="56" height="56" style="fill: #f0f0f0"></rect><rect x="4" y="12" width="8" height="8" style="fill: #be5168"></rect><rect x="36" y="12" width="8" height="8" style="fill: #be5168"></rect><rect x="4" y="20" width="8" height="8" style="fill: #be5168"></rect><rect x="36" y="20" width="8" height="8" style="fill: #be5168"></rect><rect x="4" y="28" width="8" height="8" style="fill: #be5168"></rect><rect x="36" y="28" width="8" height="8" style="fill: #be5168"></rect><rect x="4" y="36" width="8" height="8" style="fill: #be5168"></rect><rect x="36" y="36" width="8" height="8" style="fill: #be5168"></rect><rect x="12" y="12" width="8" height="8" style="fill: #be5168"></rect><rect x="28" y="12" width="8" height="8" style="fill: #be5168"></rect><rect x="12" y="36" width="8" height="8" style="fill: #be5168"></rect><rect x="28" y="36" width="8" height="8" style="fill: #be5168"></rect><rect x="20" y="12" width="8" height="8" style="fill: #be5168"></rect><rect x="20" y="28" width="8" height="8" style="fill: #be5168"></rect></svg></div><div class="text-wrapper"><div role="meta" class="isso-comment-header"><span class="author">Gerald King</span><span class="spacer">•</span><a href="#isso-38" class="permalink"><time title="Fri Jun 17 2016 10:11:56 GMT+0200 (Central European Summer Time)" datetime="2016-05-05T08:11:56Z">vor 3 Jahren</time></a><span class="note"></span></div><div class="text"><p>You can write simply `self.allocate_frame()` without `return`, but also without trailing semicolon (it's important). In Rust, it is considered better practice than using `return` as the last statement.</p></div><div class="isso-comment-footer"><span class="votes">0</span><a href="#" class="upvote"><!-- Generator: IcoMoon.io --><svg width="16" height="16" viewBox="0 0 32 32" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" fill="gray">
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</a><a href="#" class="reply">Antworten</a></div><div class="isso-follow-up"></div></div></div><div id="isso-39" class="isso-comment isso-no-votes"><div class="avatar"><svg version="1.1" viewBox="0 0 48 48" preserveAspectRatio="xMinYMin meet" shape-rendering="crispEdges" data-hash="2246f825942c"><rect x="0" y="0" width="56" height="56" style="fill: #f0f0f0"></rect><rect x="4" y="12" width="8" height="8" style="fill: #be5168"></rect><rect x="36" y="12" width="8" height="8" style="fill: #be5168"></rect><rect x="4" y="20" width="8" height="8" style="fill: #be5168"></rect><rect x="36" y="20" width="8" height="8" style="fill: #be5168"></rect><rect x="12" y="4" width="8" height="8" style="fill: #be5168"></rect><rect x="28" y="4" width="8" height="8" style="fill: #be5168"></rect><rect x="12" y="20" width="8" height="8" style="fill: #be5168"></rect><rect x="28" y="20" width="8" height="8" style="fill: #be5168"></rect><rect x="20" y="20" width="8" height="8" style="fill: #be5168"></rect><rect x="20" y="36" width="8" height="8" style="fill: #be5168"></rect></svg></div><div class="text-wrapper"><div role="meta" class="isso-comment-header"><span class="author">Errma Gerrd</span><span class="spacer">•</span><a href="#isso-39" class="permalink"><time title="Fri Jun 17 2016 10:14:44 GMT+0200 (Central European Summer Time)" datetime="2016-05-05T08:14:44Z">vor 3 Jahren</time></a><span class="note"></span></div><div class="text"><p>yes... that semicolon killed me :D</p><p>I think I'll stick with `return expression;` because it looks alot more explicit :o<br>but thanks for the clue anyway! :)</p></div><div class="isso-comment-footer"><span class="votes">0</span><a href="#" class="upvote"><!-- Generator: IcoMoon.io --><svg width="16" height="16" viewBox="0 0 32 32" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" fill="gray">
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</a><a href="#" class="reply">Antworten</a></div><div class="isso-follow-up"></div></div></div><div id="isso-40" class="isso-comment isso-no-votes"><div class="avatar"><svg version="1.1" viewBox="0 0 48 48" preserveAspectRatio="xMinYMin meet" shape-rendering="crispEdges" data-hash="f3d5b0e5e954"><rect x="0" y="0" width="56" height="56" style="fill: #f0f0f0"></rect><rect x="4" y="12" width="8" height="8" style="fill: #be5168"></rect><rect x="36" y="12" width="8" height="8" style="fill: #be5168"></rect><rect x="4" y="20" width="8" height="8" style="fill: #be5168"></rect><rect x="36" y="20" width="8" height="8" style="fill: #be5168"></rect><rect x="4" y="28" width="8" height="8" style="fill: #be5168"></rect><rect x="36" y="28" width="8" height="8" style="fill: #be5168"></rect><rect x="4" y="36" width="8" height="8" style="fill: #be5168"></rect><rect x="36" y="36" width="8" height="8" style="fill: #be5168"></rect><rect x="12" y="12" width="8" height="8" style="fill: #be5168"></rect><rect x="28" y="12" width="8" height="8" style="fill: #be5168"></rect><rect x="12" y="36" width="8" height="8" style="fill: #be5168"></rect><rect x="28" y="36" width="8" height="8" style="fill: #be5168"></rect><rect x="20" y="12" width="8" height="8" style="fill: #be5168"></rect><rect x="20" y="28" width="8" height="8" style="fill: #be5168"></rect></svg></div><div class="text-wrapper"><div role="meta" class="isso-comment-header"><span class="author">Gerald King</span><span class="spacer">•</span><a href="#isso-40" class="permalink"><time title="Fri Jun 17 2016 10:31:59 GMT+0200 (Central European Summer Time)" datetime="2016-05-05T08:31:59Z">vor 3 Jahren</time></a><span class="note"></span></div><div class="text"><p>Not at all :) I'm a Rust newbie too, and that syntax seems a bit unfamiliar for C++, Java, Python etc. programmers. (But Ruby has such a feature.) </p></div><div class="isso-comment-footer"><span class="votes">0</span><a href="#" class="upvote"><!-- Generator: IcoMoon.io --><svg width="16" height="16" viewBox="0 0 32 32" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" fill="gray">
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</a><a href="#" class="reply">Antworten</a></div><div class="isso-follow-up"></div></div></div><div id="isso-41" class="isso-comment isso-no-votes"><div class="avatar"><svg version="1.1" viewBox="0 0 48 48" preserveAspectRatio="xMinYMin meet" shape-rendering="crispEdges" data-hash="2246f825942c"><rect x="0" y="0" width="56" height="56" style="fill: #f0f0f0"></rect><rect x="4" y="12" width="8" height="8" style="fill: #be5168"></rect><rect x="36" y="12" width="8" height="8" style="fill: #be5168"></rect><rect x="4" y="20" width="8" height="8" style="fill: #be5168"></rect><rect x="36" y="20" width="8" height="8" style="fill: #be5168"></rect><rect x="12" y="4" width="8" height="8" style="fill: #be5168"></rect><rect x="28" y="4" width="8" height="8" style="fill: #be5168"></rect><rect x="12" y="20" width="8" height="8" style="fill: #be5168"></rect><rect x="28" y="20" width="8" height="8" style="fill: #be5168"></rect><rect x="20" y="20" width="8" height="8" style="fill: #be5168"></rect><rect x="20" y="36" width="8" height="8" style="fill: #be5168"></rect></svg></div><div class="text-wrapper"><div role="meta" class="isso-comment-header"><span class="author">Errma Gerrd</span><span class="spacer">•</span><a href="#isso-41" class="permalink"><time title="Fri Jun 17 2016 10:38:05 GMT+0200 (Central European Summer Time)" datetime="2016-05-05T08:38:05Z">vor 3 Jahren</time></a><span class="note"></span></div><div class="text"><p>I use CoffeeScript at work which has this feature too. But I merely use it<br>using return IMHO has the advantage that it gets syntax highlighted in another color and you can scan easier for function return points :)</p></div><div class="isso-comment-footer"><span class="votes">0</span><a href="#" class="upvote"><!-- Generator: IcoMoon.io --><svg width="16" height="16" viewBox="0 0 32 32" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" fill="gray">
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</a><a href="#" class="reply">Antworten</a></div><div class="isso-follow-up"></div></div></div><div id="isso-42" class="isso-comment isso-no-votes"><div class="avatar"><svg version="1.1" viewBox="0 0 48 48" preserveAspectRatio="xMinYMin meet" shape-rendering="crispEdges" data-hash="f3d5b0e5e954"><rect x="0" y="0" width="56" height="56" style="fill: #f0f0f0"></rect><rect x="4" y="12" width="8" height="8" style="fill: #be5168"></rect><rect x="36" y="12" width="8" height="8" style="fill: #be5168"></rect><rect x="4" y="20" width="8" height="8" style="fill: #be5168"></rect><rect x="36" y="20" width="8" height="8" style="fill: #be5168"></rect><rect x="4" y="28" width="8" height="8" style="fill: #be5168"></rect><rect x="36" y="28" width="8" height="8" style="fill: #be5168"></rect><rect x="4" y="36" width="8" height="8" style="fill: #be5168"></rect><rect x="36" y="36" width="8" height="8" style="fill: #be5168"></rect><rect x="12" y="12" width="8" height="8" style="fill: #be5168"></rect><rect x="28" y="12" width="8" height="8" style="fill: #be5168"></rect><rect x="12" y="36" width="8" height="8" style="fill: #be5168"></rect><rect x="28" y="36" width="8" height="8" style="fill: #be5168"></rect><rect x="20" y="12" width="8" height="8" style="fill: #be5168"></rect><rect x="20" y="28" width="8" height="8" style="fill: #be5168"></rect></svg></div><div class="text-wrapper"><div role="meta" class="isso-comment-header"><span class="author">Gerald King</span><span class="spacer">•</span><a href="#isso-42" class="permalink"><time title="Fri Jun 17 2016 10:41:34 GMT+0200 (Central European Summer Time)" datetime="2016-05-05T08:41:34Z">vor 3 Jahren</time></a><span class="note"></span></div><div class="text"><p>You are probably right about this :)</p></div><div class="isso-comment-footer"><span class="votes">0</span><a href="#" class="upvote"><!-- Generator: IcoMoon.io --><svg width="16" height="16" viewBox="0 0 32 32" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" fill="gray">
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</a><a href="#" class="reply">Antworten</a></div><div class="isso-follow-up"></div></div></div></div></div></div><div id="isso-43" class="isso-comment isso-no-votes"><div class="avatar"><svg version="1.1" viewBox="0 0 48 48" preserveAspectRatio="xMinYMin meet" shape-rendering="crispEdges" data-hash="991d55c50857"><rect x="0" y="0" width="56" height="56" style="fill: #f0f0f0"></rect><rect x="4" y="12" width="8" height="8" style="fill: #447c69"></rect><rect x="36" y="12" width="8" height="8" style="fill: #447c69"></rect><rect x="12" y="12" width="8" height="8" style="fill: #447c69"></rect><rect x="28" y="12" width="8" height="8" style="fill: #447c69"></rect><rect x="20" y="12" width="8" height="8" style="fill: #447c69"></rect><rect x="20" y="28" width="8" height="8" style="fill: #447c69"></rect></svg></div><div class="text-wrapper"><div role="meta" class="isso-comment-header"><span class="author">Gabriel Eiseman</span><span class="spacer">•</span><a href="#isso-43" class="permalink"><time title="Sat Jul 23 2016 07:02:09 GMT+0200 (Central European Summer Time)" datetime="2016-06-06T05:02:09Z">vor 3 Jahren</time></a><span class="note"></span></div><div class="text"><p>These articles of yours are very good: I'm following them in C because they are better than any C tutorial I have yet found. However, I ran into a small problem with this one. In your Multiboot crate you define the ELF symbols tag as having 3 32 bit integers where the multiboot specification pdf you link to specifies 4 16 bit integers. The layout in your crate seems to be correct though, because I defined a struct in C (using __attribute__((packed))) according to the pdf and it did not work, but when I mirrored your layout it did.</p></div><div class="isso-comment-footer"><span class="votes">0</span><a href="#" class="upvote"><!-- Generator: IcoMoon.io --><svg width="16" height="16" viewBox="0 0 32 32" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" fill="gray">
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</a><a href="#" class="reply">Antworten</a></div><div class="isso-follow-up"></div></div></div></div></div></div><div id="isso-46" class="isso-comment isso-no-votes"><div class="avatar"><svg version="1.1" viewBox="0 0 48 48" preserveAspectRatio="xMinYMin meet" shape-rendering="crispEdges" data-hash="5abac2da368c"><rect x="0" y="0" width="56" height="56" style="fill: #f0f0f0"></rect><rect x="4" y="4" width="8" height="8" style="fill: #be5168"></rect><rect x="36" y="4" width="8" height="8" style="fill: #be5168"></rect><rect x="4" y="36" width="8" height="8" style="fill: #be5168"></rect><rect x="36" y="36" width="8" height="8" style="fill: #be5168"></rect><rect x="12" y="4" width="8" height="8" style="fill: #be5168"></rect><rect x="28" y="4" width="8" height="8" style="fill: #be5168"></rect><rect x="12" y="20" width="8" height="8" style="fill: #be5168"></rect><rect x="28" y="20" width="8" height="8" style="fill: #be5168"></rect><rect x="12" y="28" width="8" height="8" style="fill: #be5168"></rect><rect x="28" y="28" width="8" height="8" style="fill: #be5168"></rect><rect x="20" y="4" width="8" height="8" style="fill: #be5168"></rect><rect x="20" y="36" width="8" height="8" style="fill: #be5168"></rect></svg></div><div class="text-wrapper"><div role="meta" class="isso-comment-header"><span class="author">Redrield</span><span class="spacer">•</span><a href="#isso-46" class="permalink"><time title="Thu Nov 03 2016 23:02:09 GMT+0100 (Central European Standard Time)" datetime="2016-10-04T22:02:09Z">vor 3 Jahren</time></a><span class="note"></span></div><div class="text"><p>When I get to the part when we're getting the kernel start and end, I'm getting a triple fault and the OS is stuck in a bootloop. This is my Bochs log <a href="https://gist.github.com/Redrield/0634cb13260d743afc828c62fa5c102c">https://gist.github.com/Red...</a></p></div><div class="isso-comment-footer"><span class="votes">0</span><a href="#" class="upvote"><!-- Generator: IcoMoon.io --><svg width="16" height="16" viewBox="0 0 32 32" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" fill="gray">
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</a><a href="#" class="reply">Antworten</a></div><div class="isso-follow-up"><div id="isso-47" class="isso-comment isso-no-votes"><div class="avatar"><svg version="1.1" viewBox="0 0 48 48" preserveAspectRatio="xMinYMin meet" shape-rendering="crispEdges" data-hash="666df3217240"><rect x="0" y="0" width="56" height="56" style="fill: #f0f0f0"></rect><rect x="4" y="12" width="8" height="8" style="fill: #9abf88"></rect><rect x="36" y="12" width="8" height="8" style="fill: #9abf88"></rect><rect x="4" y="28" width="8" height="8" style="fill: #9abf88"></rect><rect x="36" y="28" width="8" height="8" style="fill: #9abf88"></rect><rect x="4" y="36" width="8" height="8" style="fill: #9abf88"></rect><rect x="36" y="36" width="8" height="8" style="fill: #9abf88"></rect><rect x="12" y="4" width="8" height="8" style="fill: #9abf88"></rect><rect x="28" y="4" width="8" height="8" style="fill: #9abf88"></rect><rect x="12" y="28" width="8" height="8" style="fill: #9abf88"></rect><rect x="28" y="28" width="8" height="8" style="fill: #9abf88"></rect><rect x="20" y="12" width="8" height="8" style="fill: #9abf88"></rect></svg></div><div class="text-wrapper"><div role="meta" class="isso-comment-header"><span class="author">Philipp Oppermann</span><span class="spacer">•</span><a href="#isso-47" class="permalink"><time title="Mon Nov 07 2016 09:38:20 GMT+0100 (Central European Standard Time)" datetime="2016-10-01T08:38:20Z">vor 3 Jahren</time></a><span class="note"></span></div><div class="text"><p>Hmm, I don't use Bochs, but according to <a href="http://bochs.sourceforge.net/doc/docbook/user/bios-tips.html">this page</a> of the Bochs user manual it seems to be a “no atapi cdrom found“ error. I have no idea why it occurs though… Does it work in QEMU?</p></div><div class="isso-comment-footer"><span class="votes">0</span><a href="#" class="upvote"><!-- Generator: IcoMoon.io --><svg width="16" height="16" viewBox="0 0 32 32" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" fill="gray">
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<p>let multiboot_start = boot_info.start_address();</p>
<p>let multiboot_end = boot_info.end_address();</p></div><div class="isso-comment-footer"><span class="votes">0</span><a href="#" class="upvote"><!-- Generator: IcoMoon.io --><svg width="16" height="16" viewBox="0 0 32 32" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" fill="gray">
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Your link for "re-export" under the section "Testing it" is broken.</p>
<p>Are you supposed to do something with the instruction "In order to test it in main, we need to re-export the AreaFrameAllocator in the memorymodule." ?
I keep getting this error:
"Could not find <code>AreaFrameAllocator</code> in <code>memory</code> "</p>
<p>in src/lib.rs on this row:</p>
<p>let mut frame_allocator = memory::AreaFrameAllocator::new(...</p></div><div class="isso-comment-footer"><span class="votes">0</span><a href="#" class="upvote"><!-- Generator: IcoMoon.io --><svg width="16" height="16" viewBox="0 0 32 32" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" fill="gray">
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</a><a href="#" class="reply">Antworten</a></div><div class="isso-follow-up"><div id="isso-347" class="isso-comment isso-no-votes"><div class="avatar"><svg version="1.1" viewBox="0 0 48 48" preserveAspectRatio="xMinYMin meet" shape-rendering="crispEdges" data-hash="c409a273b137"><rect x="0" y="0" width="56" height="56" style="fill: #f0f0f0"></rect><rect x="4" y="4" width="8" height="8" style="fill: #447c69"></rect><rect x="36" y="4" width="8" height="8" style="fill: #447c69"></rect><rect x="4" y="12" width="8" height="8" style="fill: #447c69"></rect><rect x="36" y="12" width="8" height="8" style="fill: #447c69"></rect><rect x="4" y="20" width="8" height="8" style="fill: #447c69"></rect><rect x="36" y="20" width="8" height="8" style="fill: #447c69"></rect><rect x="4" y="36" width="8" height="8" style="fill: #447c69"></rect><rect x="36" y="36" width="8" height="8" style="fill: #447c69"></rect><rect x="12" y="4" width="8" height="8" style="fill: #447c69"></rect><rect x="28" y="4" width="8" height="8" style="fill: #447c69"></rect><rect x="12" y="36" width="8" height="8" style="fill: #447c69"></rect><rect x="28" y="36" width="8" height="8" style="fill: #447c69"></rect><rect x="20" y="20" width="8" height="8" style="fill: #447c69"></rect><rect x="20" y="28" width="8" height="8" style="fill: #447c69"></rect></svg></div><div class="text-wrapper"><div role="meta" class="isso-comment-header"><span class="author">Madeleine Berner</span><span class="spacer">•</span><a href="#isso-347" class="permalink"><time title="Sun Dec 03 2017 17:20:19 GMT+0100 (Central European Standard Time)" datetime="2017-11-00T16:20:19Z">letztes Jahr</time></a><span class="note"></span></div><div class="text"><p>Hi (again)!
I just found the code to add to fix my problem.
Perhaps you can add it to your blog post?</p>
<p>From this commit I added the new lines from the file mod.rs:</p>
<p><a href="https://github.com/phil-opp/blog_os/commit/9f1a69cafa8a1b09dd71cbf3bf7493e388576391#diff-8c6f6418d9ea96c33ce93b05462bfd65">https://github.com/phil-opp/blog_os/commit/9f1a69cafa8a1b09dd71cbf3bf7493e388576391#diff-8c6f6418d9ea96c33ce93b05462bfd65</a></p></div><div class="isso-comment-footer"><span class="votes">0</span><a href="#" class="upvote"><!-- Generator: IcoMoon.io --><svg width="16" height="16" viewBox="0 0 32 32" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" fill="gray">
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{% endraw %}
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