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kernel

Are Linux kernel threads really kernel processes?

August 10, 2022 by Magenaut

I’ve read in many places that Linux creates a kernel thread for each user thread in a Java VM. (I see the term “kernel thread” used in two different ways:

Categories Q&A, Unix & Linux Tags kernel, linux, linux-kernel, process, thread Leave a comment

How to assign USB driver to device

August 10, 2022 by Magenaut

This question is two-fold:

Categories Q&A, Unix & Linux Tags drivers, kernel, kernel-modules, udev, usb Leave a comment

How does a Segmentation Fault work under-the-hood?

August 10, 2022 by Magenaut

I can’t seem to find any information on this aside from “the CPU’s MMU sends a signal” and “the kernel directs it to the offending program, terminating it”.

Categories Q&A, Unix & Linux Tags kernel, segmentation-fault, shell, signals Leave a comment

What is the difference between kernel drivers and kernel modules?

August 10, 2022 by Magenaut

When I do a lspci -k on my Kubuntu with a 3.2.0-29-generic kernel I can see something like this:

Categories Q&A, Unix & Linux Tags drivers, kernel, kernel-modules, linux Leave a comment

Set default kernel in GRUB

August 10, 2022 by Magenaut

How can I pick which kernel GRUB2 should load by default? I recently installed a the linux realtime kernel and now it loads by default. I’d like to load the regular one by default.

Categories Q&A, Unix & Linux Tags boot, grub, kernel, linux Leave a comment

disable transparent hugepages

August 10, 2022 by Magenaut

We are installing SAP HANA in a RAID machine. As part of the installation step, it is mentioned that,

Categories Q&A, Unix & Linux Tags kernel, linux, sysctl Leave a comment

MMU-less kernel?

August 10, 2022 by Magenaut

I would like to try compile mmu-less kernel. From what I found in configuration there is no option for such a thing. Is it possible to be done?

Categories Q&A, Unix & Linux Tags kernel, linux, linux-kernel, memory Leave a comment

How much RAM does the kernel use?

August 10, 2022 by Magenaut

This question is motivated by my shock when I discovered that Mac OS X kernel uses 750MB of RAM.

Categories Q&A, Unix & Linux Tags kernel, linux, ram Leave a comment

Can I list the filesystems a running kernel can support?

August 10, 2022 by Magenaut

I’m trying to detect what filesystems a kernel can support. Ideally in a little list of their names but I’ll take anything you’ve got.

Categories Q&A, Unix & Linux Tags filesystems, kernel, linux Leave a comment

how is page size determined in virtual address space?

August 9, 2022 by Magenaut

Linux uses a virtual memory system where all of the addresses are virtual addresses and not physical addresses. These virtual addresses are converted into physical addresses by the processor.

Categories Q&A, Unix & Linux Tags hardware, kernel, linux, memory Leave a comment
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  1. michealSmith07 on Is there a way to dynamically refresh the less command?August 21, 2022

    That is a very nice post. I like this post.

  2. anonymous on Fix libwacom9 dependency issue when upgrade DebianJune 27, 2022

    saved my day!! Thanks for the help…

  3. sreedhar on Fix libwacom9 dependency issue when upgrade DebianMay 10, 2022

    Thanks its working

  4. saintnick on Fix libwacom9 dependency issue when upgrade DebianMay 10, 2022

    remove libwacom2 worked for me as well

  5. ranafoul on Fix libwacom9 dependency issue when upgrade DebianApril 22, 2022

    apt remove libwacom2 helped on kali 2022.01. gr8

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