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See this world through Bible

Recording myslef for Bible

About Light From the moment he said, ‘Let there be light,’ he created this world. In modern society, with advanced technology, humans can easily obtain light, which seems ordinary and commonplace....

Posted by half cup coffee on May 27, 2024

QNX devb related API

A recordning from a devb-ufs driver learning

Background Not all the description of QNX API you can found from QNX offical online manual. Some APIs only known by QNX and their paratners, such as chip vendor. Here Lists some APIs description a...

Posted by half cup coffee on May 20, 2024

Cache and TLB introduction

Basic deep knowledge for ARM

What is Cache ? See this description from ARM document: A cache is a small, fast block of memory that sits between the core and main memory. It holds copies of items in main memory. Accesses to t...

Posted by half cup coffee on May 10, 2024

Using Debian Tool Set in Android System with ADEB

Running Full Linux Utilities on Android Devices

Using Debian Tool Set in Android System The Challenge Android, while Linux-based, uses a minimal userspace focused on mobile applications. Many powerful Linux development and debugging tools are ...

Posted by half cup coffee on January 4, 2023

GPT table introduction

Get a initial impression about GPT

GPT table introduction MBR分区表： Master Boot Record，即硬盘主引导记录分区表，只支持容量在 2.1TB 以下的硬盘，超过2.1TB的硬盘只能管理2.1TB， 最多只支持4个主分区或三个主分区和一个扩展分区，扩展分区下可以有多个逻辑分区。 GPT分区表：GPT，全局唯一标识分区表(GUID Partition Table) 与MBR最大4...

Posted by half cup coffee on September 30, 2022

Linux 9P Filesystem: Bridging Virtual Machines and Hosts

Linux 9P Filesystem Introduction The 9P filesystem (also known as Plan 9 Filesystem Protocol) provides an elegant solution for file sharing between guest virtual machines and host systems. Origina...

Posted by half cup coffee on September 30, 2022

Linux 文件系统读写放大作用的定量分析 PDF

EXT4 Quantitative Analysis of File System Read/Write Amplification Effect

Linux 文件系统读写放大作用的定量分析（PDF） 很多年前的文章， 留个纪念 : PDF

Posted by half cup coffee on September 30, 2022

Setup Qemu for arm64 android kernel running

A way to run the latest android kernel what you want

Setup Qemu for arm64 android kernel running Fetch the android kernel Google provide the manifest to fetch the kernel soruce, corresponding config files and corss compile toolchain mkdir android-...

Posted by half cup coffee on September 30, 2022

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