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 		<h5>Contribute</h5><hr>
 		<a href="https://github.com/gem5/new-website/tree/master/"><p>Contribute to gem5 today</p></a><br>
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 				<h3><a href="/2018/06/01/gem5-spectre.html">Visualizing Spectre with gem5</a></h3>
 				<time>Jun 1, 2018</time>
 				<p>by Jason Lowe-Power</p>
 				<p><p><a href="https://meltdownattack.com/">Spectre and Meltdown</a> took much of our
 community by surprise. I personally found these attacks fascinating
 because they didn’t rely on a <em>bug</em> in any particular hardware
 implementation, but leveraged undefined behavior. Specifically, Spectre
 and Meltdown can exfiltrate potentially secret memory data by detecting
 the effects of speculative instructions <em>that are later squashed</em>.</p>

 <p>Very cool!</p>

 <p>Out of order processors are ver...</p>
 				<a href="/2018/06/01/gem5-spectre.html"><p>Read more...</p></a>
 				<br><hr><br>

 				<h3><a href="/tools/2017/01/13/gem5-fs.html">Setting up gem5 full system</a></h3>
 				<time>Jan 13, 2017</time>
 				<p>by Jason Lowe-Power</p>
 				<p><p>This is partially a followup to <a href="http://www.lowepower.com/jason/creating-disk-images-for-gem5.html">Creating disk images for
 gem5</a>
 and partially how to setup x86 full system for gem5. In this post, I’ll
 discuss how to create a disk image from scratch and start using it with
 gem5.</p>

 <p>It is important for computer architecture research to use the most
 up-to-date software on the systems we are simulating. Too much computer
 architecture research reports results using kernels fro...</p>
 				<a href="/tools/2017/01/13/gem5-fs.html"><p>Read more...</p></a>
 				<br><hr><br>

 				<h3><a href="/jekyll/update/2015/11/24/gem5-disks.html">Creating disk images for gem5</a></h3>
 				<time>Nov 24, 2015</time>
 				<p>by Jason Lowe-Power</p>
 				<p><p>When using gem5 in full-system mode, you have to have a disk image with
 the operating system and all of your data on it. This is just like
 having a physical disk in a physical machine. In this post, I’m going to
 walk through how to create a new disk and install a (semi-)current
 version of Ubuntu on the disk. By the end of this post, you should be
 able to create your own disk with whatever extra data and applications
 you want.</p>

 <p>This post assumes that you have already checked out a ve...</p>
 				<a href="/jekyll/update/2015/11/24/gem5-disks.html"><p>Read more...</p></a>
 				<br><hr><br>

 				<h3><a href="/2015/06/09/gem5-horrors.html">gem5 Horrors and what we can do about it</a></h3>
 				<time>Jun 9, 2015</time>
 				<p>by Jason Lowe-Power</p>
 				<p><p><img src="/assets/img/gem5-horrors.png" alt="image" /></p>

 <p>This post is a post which mostly follows the talk that I am giving at
 the <a href="http://gem5.org/User_workshop_2015">gem5 Users Workshop</a>. This post
 contains some more details on problems that I skipped in my talk and
 some references that I was not able to include in a presentation. You
 can view my presentation on Google Drive
 <a href="https://docs.google.com/presentation/d/1QGA5UVaVJkkMITF2TXCY_KlwmfWef1KBzfDP6ocbj7I/pub?...</p>
 				<a href="/2015/06/09/gem5-horrors.html"><p>Read more...</p></a>
 				<br><hr><br>

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	<h5>Contribute</h5><hr>
	<a href="https://github.com/gem5/new-website/tree/master/"><p>Contribute to gem5 today</p></a><br>
	</div>

	<div id="posts">

	<h3><a href="/2018/06/01/gem5-spectre.html">Visualizing Spectre with gem5</a></h3>
	<time>Jun 1, 2018</time>
	<p>by Jason Lowe-Power</p>
	<p><p><a href="https://meltdownattack.com/">Spectre and Meltdown</a> took much of our
	community by surprise. I personally found these attacks fascinating
	because they didn’t rely on a <em>bug</em> in any particular hardware
	implementation, but leveraged undefined behavior. Specifically, Spectre
	and Meltdown can exfiltrate potentially secret memory data by detecting
	the effects of speculative instructions <em>that are later squashed</em>.</p>

	<p>Very cool!</p>

	<p>Out of order processors are ver...</p>
	<a href="/2018/06/01/gem5-spectre.html"><p>Read more...</p></a>
	<br><hr><br>

	<h3><a href="/tools/2017/01/13/gem5-fs.html">Setting up gem5 full system</a></h3>
	<time>Jan 13, 2017</time>
	<p>by Jason Lowe-Power</p>
	<p><p>This is partially a followup to <a href="http://www.lowepower.com/jason/creating-disk-images-for-gem5.html">Creating disk images for
	gem5</a>
	and partially how to setup x86 full system for gem5. In this post, I’ll
	discuss how to create a disk image from scratch and start using it with
	gem5.</p>

	<p>It is important for computer architecture research to use the most
	up-to-date software on the systems we are simulating. Too much computer
	architecture research reports results using kernels fro...</p>
	<a href="/tools/2017/01/13/gem5-fs.html"><p>Read more...</p></a>
	<br><hr><br>

	<h3><a href="/jekyll/update/2015/11/24/gem5-disks.html">Creating disk images for gem5</a></h3>
	<time>Nov 24, 2015</time>
	<p>by Jason Lowe-Power</p>
	<p><p>When using gem5 in full-system mode, you have to have a disk image with
	the operating system and all of your data on it. This is just like
	having a physical disk in a physical machine. In this post, I’m going to
	walk through how to create a new disk and install a (semi-)current
	version of Ubuntu on the disk. By the end of this post, you should be
	able to create your own disk with whatever extra data and applications
	you want.</p>

	<p>This post assumes that you have already checked out a ve...</p>
	<a href="/jekyll/update/2015/11/24/gem5-disks.html"><p>Read more...</p></a>
	<br><hr><br>

	<h3><a href="/2015/06/09/gem5-horrors.html">gem5 Horrors and what we can do about it</a></h3>
	<time>Jun 9, 2015</time>
	<p>by Jason Lowe-Power</p>
	<p><p><img src="/assets/img/gem5-horrors.png" alt="image" /></p>

	<p>This post is a post which mostly follows the talk that I am giving at
	the <a href="http://gem5.org/User_workshop_2015">gem5 Users Workshop</a>. This post
	contains some more details on problems that I skipped in my talk and
	some references that I was not able to include in a presentation. You
	can view my presentation on Google Drive
	<a href="https://docs.google.com/presentation/d/1QGA5UVaVJkkMITF2TXCY_KlwmfWef1KBzfDP6ocbj7I/pub?...</p>
	<a href="/2015/06/09/gem5-horrors.html"><p>Read more...</p></a>
	<br><hr><br>

	<p>subscribe <a href="/feed.xml">via RSS</a></p>
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