Article directory 1 **Install mysql5.7 or above database** 1.1. Download 1.2. Place the compressed package in the tools directory and decompress it. 1.3. Establish user groups and users 1.4. Set permissions 1.5. Install mysql **If an installation error message appears:** 1.6. Start the service 1.7. Put mysql into the local system service 1.8. Set msyql […]
Tag: x86
Intel x86_64 LBR functionality
Article directory Preface 1. CPUID instruction 1.1 Introduction to CPUID functions 1.2 Input parameter 01H and return the result 1.2.1 ECX returns results 1.2.2 EDX returns results 1.3 CPUID instruction in Linux 1.3.1 The application layer calls the cpid command 1.3.2 Calling the cpuid instruction in the Linux kernel 2. MSR register 2.1 Introduction to […]
Analysis of the problem of kernel mode access to user mode address space introduced by X86 SMAP (Supervisor Mode Access Prevention) mechanism
In Linux systems, when it comes to copying user-mode and kernel-mode data, if you do not consider the zero-copy situation of establishing a shared mapping between kernel space and user space, you usually call several groups of macros copy_from_user/copy_to_user/put_user/get_user. realized. Earlier, for the two situations of illegal user mode pointer (no VMA) or page fault […]
Galaxy Kirin v10x86 or arm offline installation service
Galaxy Kirin v10x86 or arm offline installation service There was a project recently. Party A’s servers used all domestically produced servers, Galaxy Kirin. The architecture was x86 and it was unable to connect to the external network. It required offline installation services. The normal idea is to find the offline installation package and then copy […]
openEuler 22.03 Docker runs containers of arm and other architectures under the x86 architecture – the road to dream building
Why do this? With the popularization of localization and the support of national policies for the information and innovation industry, some financial and securities industries, government units, etc., have gradually begun to take the route of localization of information and innovation, and more and more people have come into contact with domestic CPUs (arm platform, […]
Solve LINK: fatal error LNK1181: Unable to open input file “avdevice.lib” error: command D:\Program Files (x86)\Micr
Table of Contents Solve LINK: fatal error LNK1181: Unable to open input file “avdevice.lib” error: command ‘D:\Program Files (x86)\Microsoft Visual Studio\2019\Community\VC\Tools\MSVC\14.27.29110\bin\Hostx86 \x86\link.exe’ failed with exit status 1181 Problem Description solution Step 1: Identify missing library files Step 2: Add library file path to project configuration Step 3: Recompile the project Summarize Solution to LINK: fatal […]
Hot Wheels X86 motherboard youyeetoo X1: Deploy MQTT Broker
Extra number, extra number. . . Shenzhen Hot Wheels Technology has launched a new product – youyeetoo X1. youyeetoo Aimed at the AIOT and automatic control market, the size is only the size of a palm (115 * 75mm), but the interface is very rich. It has built-in 3-channel serial port UART, 2-channel HDMI, 6-channel […]
Build any version of rocketmq multi-architecture x86 arm image on Linux – the road to dream building
Current situation Currently, there are only docker images under the x86 architecture of rocketmq on the market and officially. With the increasing demand for localization and Xinchuang adaptation, it is obvious that the existing docker images under the x86 architecture cannot meet the diverse needs. Therefore, we It is necessary to create multi-architecture images that […]
[macOS-OpenCV error] ld: warning:ignoring file found architecture x86_64, required architecture arm64
If the mac you used before had an Intel chip, and then you changed to a macM1 or M2 chip. An error will be reported when using OpenCV ld: warning: ignoring file ‘/usr/local/Cellar/opencv/4.7.0_7/lib/libopencv_gapi.4.7.0.dylib’: found architecture ‘x86_64’, required architecture ‘arm64’ ld: warning: ignoring file ‘/usr/local/Cellar/opencv/4.7.0_7/lib/libopencv_bgsegm.4.7.0.dylib’: found architecture ‘x86_64’, required architecture ‘arm64’ ld: warning: ignoring file ‘/usr/local/Cellar/opencv/4.7.0_7/lib/libopencv_alphamat.4.7.0.dylib’: […]
Basic format of X86 instructions
Basic format of X86 instructions 1 What is machine code 2 Basic format of X86 instructions 3 command prefix 3.1 Group 1: Blocking and Repeated Execution Prefixes 3.2 Group 2: Segment prefix 3.3 The third group: modify the default length of the operand 3.4 Group 4: Modify the default address length 3.5 The meaning of […]