change back to hugo

author: garhve <git@garhve.com> 2023-02-14 18:40:10 +0800
committer: garhve <git@garhve.com> 2023-02-14 18:40:10 +0800
commit: 4d12e92153c463bd5fecbc9606a5489601f57ee6 (patch)
tree: 84990b20afd1d1c4d7bec1f681b5c3236eef1f4b /posts/architecture-of-linux-kernel
parent: 734f042c9d99e0110d5e4cf8f2994a5ce27385d1 (diff)
1 files changed, 199 insertions, 0 deletions
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+      "name" : "Architecture of Linux Kernel",
+      "headline" : "Architecture of Linux Kernel",
+      "description" : "Description Modern microcontrollers nowadays support at least two privilege levels. Intel\/AMD x86-64 family supports 4 levels, whilst ARM (32bit) microcontrollers support up to 7 levels (6 privileged, 1 non-privileged).\nModern operating systems support at least 2 levels:\nUser space: For applications to run in unprivileged user mode Kernel space: For the kernel (and all its components) to run in privileged mode – kernel mode Address of these 2 spaces are separate.",
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+<title>Architecture of Linux Kernel</title>
+  <meta property="og:title" content="Architecture of Linux Kernel" />
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+  <meta property="og:description" content="Description Modern microcontrollers nowadays support at least two privilege levels. Intel/AMD x86-64 family supports 4 levels, whilst ARM (32bit) microcontrollers support up to 7 levels (6 privileged, 1 non-privileged).
+Modern operating systems support at least 2 levels:
+User space: For applications to run in unprivileged user mode Kernel space: For the kernel (and all its components) to run in privileged mode – kernel mode Address of these 2 spaces are separate." />
+  <meta name="description" content="Description Modern microcontrollers nowadays support at least two privilege levels. Intel/AMD x86-64 family supports 4 levels, whilst ARM (32bit) microcontrollers support up to 7 levels (6 privileged, 1 non-privileged).
+Modern operating systems support at least 2 levels:
+User space: For applications to run in unprivileged user mode Kernel space: For the kernel (and all its components) to run in privileged mode – kernel mode Address of these 2 spaces are separate." />
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+          <h1 class="post-title">Architecture of Linux Kernel</h1>
+          
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+              
+              <time class="post-date" datetime="2022-09-03 14:33:37 CST">
+                03 Sep 2022
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+          <h2 id="description">Description</h2>
+<p>Modern microcontrollers nowadays support at least two privilege levels. Intel/AMD x86-64 family supports 4 levels, whilst ARM (32bit) microcontrollers support up to 7 levels (6 privileged, 1 non-privileged).</p>
+<p>Modern operating systems support at least 2 levels:</p>
+<ul>
+<li><strong>User space</strong>: For applications to run in unprivileged user mode</li>
+<li><strong>Kernel space</strong>: For the kernel (and all its components) to run in privileged mode – kernel mode</li>
+</ul>
+<p>Address of these 2 spaces are separate.</p>
+<p>Applications in user mode will auto-linked to glibc(the GNU standard C library). Libraries only available in user mode, kernel mode doesn&rsquo;t have this conception. An application only can through <strong>System call</strong> to access kernel. On the other hand, system calls are the only legal entry point into the kernel space.</p>
+<blockquote>
+<p>Libraries APIs: man section 3
+System calls APIs: man section 2</p>
+</blockquote>
+<p>to be continue&hellip;</p>
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author	garhve <git@garhve.com>	2023-02-14 18:40:10 +0800
committer	garhve <git@garhve.com>	2023-02-14 18:40:10 +0800
commit	4d12e92153c463bd5fecbc9606a5489601f57ee6 (patch)
tree	84990b20afd1d1c4d7bec1f681b5c3236eef1f4b /posts/architecture-of-linux-kernel
parent	734f042c9d99e0110d5e4cf8f2994a5ce27385d1 (diff)