Clik here to view.
Error starting VM - CentOS Kernel Panic - not syncing: Attemped to kill
Clone a VM in VirtualBox and restore from VMware, but starting a VM seemed like an error.
View ArticleAn kdump tool issue with the customized kernel
when we are using the kdump tool, we need to install the according kernel-debug*.rpm at first.My questions is , the linux I am using is compiled by myself with lots of modifications. When could I find...
View Articlearch/arm64/Makefile:27: ld does not support --fix-cortex-a53-843419; kernel...
I have tried to compile a custom kernel based on this source: https://github.com/dlwlrma123/kernel_poco_citrusSo, I have to get stuck with this error :arch/arm64/Makefile:27: ld does not support...
View ArticleVirtual audio driver (microphone)
I want to develop a virtual microphone driver. Please, do not say anything about DirectShow - that's not "the way". I need a solution that will work with any software including Skype and MSN. And...
View Articleibv_post_send performance optimization in KMDF windows driver
I want to use RDMA in a KMDF driver where the buffer received in an EvtIoWrite will be written directly to remote memory but this operation is performance critical so I'm wondering if there is a way to...
View ArticleWhy does epoll use a combination of the file descriptor number and the open...
In epoll(7):What is the key used to distinguish the file descriptors registered in an interest list?The key is the combination of the file descriptor number and the open file description (also known as...
View ArticleI cant load compiled realtek 88XXau module on google coral dev board
I am trying to add a ASUS AC56 USB wireless adapter to my google coral dev board.I cloned the source from a github repo. whe I tried to compile it through a error about build folder not being in...
View ArticleCan the rwsem in kernel be held by a reader while it has been held by a writer?
When I use mmap_lock tracepoint, something strange occured. I found rwsem in kernel be held by a reader while it has been held by a writer. Is that possible?tracepoint output look like this:tracepoint...
View ArticleLinux kernel: Intel e1000e Ethernet driver with Fujitsu Extended Socket...
Out of necessity I have to compile a custom Linux kernel to support a third-party app.As a result I also am trying to reduce unnecessary modules. This lead to my question:My hardware includes the Intel...
View ArticleClik here to view.
Restart Kernel and Deal with the Pop Up in Command Line in Python Jupyter...
I want to restart kernel in command line in Python jupternotebook and this code works wellRestart ipython Kernel with a command from a cellimport osos._exit(00)However, there is a pop up message like...
View ArticleKernel:`What can cause a memory read that used to be read all the time to...
I am encountering a weird issue with a driver for an Ethernet controller on a custom board with a Kernel based on 2.6.31.6. The kernel contains a lot of modules dedicated to that board SoC, which was...
View ArticleIn Tcp, what's the difference between socket and connection?
netstat print is :tcp4 0 0 127.0.0.1.8000 127.0.0.1.59134 ESTABLISHEDtcp4 0 0 127.0.0.1.59134 127.0.0.1.8000 ESTABLISHEDtcp4 0 0 *.8000 *.* LISTENeach line of the print is a connection，so I can think...
View ArticleThe 'am' command is not operated by the call_usermodehelper() in android system
I implemented a service application that operates on Android with system privileges (priv-app). [The service outputs a simple dialog.]package com.example.service;import android.app.Service;import...
View ArticleLinux Driver Developement User-Commands
I am currently implementing a device driver. Its attached to the ACPI interface. I now want that a user can enter a command in the shell and the driver will get the command and do the command. I was...
View ArticleHow to get input from user with c/c++ (for operating system)
I am writing an operating system with C++ to learn (INCLUDING C) I learned a few functions such as printing to the screen, but I could not learn to receive input from the user and print to the screen....
View ArticleProblem with drawing pixels in os development
I'm a bit new to the os development world and have been recently trying my hand at a 32 bit kernel, I'm using GRUB as the bootloader and I have already collected the vbe information (of course by...
View ArticleDoes each process has its own process table or there is just one process...
I am studying unix operating system. And I am having lot confusion regarding process data structure in unix.1> Are there separate process tables per processes or only one that only kernel manipulate...
View ArticleHLK Studio does not show my driver in selection tab
I am trying to do HLK testing for my own driver by this instruction https://msdn.microsoft.com/ru-ru/library/windows/hardware/dn915002(v=vs.85).aspx , but I have problems.I can not do step 5 as I do...
View ArticleHow to detect AVB is running normally or not android?
AVB is Android Verified Boot.How to detect in case an abnormality is detected while executing AVB?From boot, I need to notify whether it started normally or not.Is it possible to check through...
View ArticleIs OS X have any kernel function similar to on_each_cpu() in linux
I want to execute function on each processors.Is OS X have any kernel function similar to on_each_cpu() in linux?
View Article