Does anyone know how to send data from a kernel module to a userspace app, via signals? Actually, I have a kernel module that uses the function send_s ...
Does anyone know how to send data from a kernel module to a userspace app, via signals? Actually, I have a kernel module that uses the function send_s ...
I have DPDK-20.11.3 installed. Given that a Dpdk application is a process from the Linux point of view, I would assume that there should be ways (pos ...
how can i check if my kube-proxy is run in IPVS mode? kube proxy run in three diffrent mode, but my question is how to check in which mode my kube-pr ...
This is a new and modified question for: What is needed to be able to access a user pointer from kernel-space as I lost access to my account. I want ...
I'm writing a small Kernel to learn more about Operating ystems. I recently decided to start implementing User Mode, just for fun. To achieve this, I ...
We're reading a basic/simple guide to Operating Systems in my CS class. The text gives multiple examples of OSs that use 1:1 threading, and some that ...
I am trying to read out an i2c ambient light sensor BH1750 from C in userspace. I am using a BeagleBone pocket with Linux. The Datasheet says, that a ...
I want to know whether there is a guarantee that memory address is a positive integer, including zero, in intptr_t using the following c/c++ functions ...
I know that as a general note files should not be read from kernelspace. However I am interested in looking for keywords in certain files using a BPF ...
I am working with AOSP. My vulkan driver runs in userspace(application process), Is it possible to create log file from this driver other than applica ...
Recently I've started reading (again) Tanenbaum's 'Modern Operating Systems 4ed' and I am a little stuck in Chapter 2 that discusses processes and thr ...
I wondered why we need to switch to kernel space when we want to access a hardware device. I understand that sometimes, for specific actions such as m ...
Some times I need a proper way to measure performance at nanosecond from my user space application in order to include the syscall delays in my measur ...
. Answers to this question are eligible for a +50 reputation bounty. Vi ...
For educational purposes, I've managed to create a custom syscall that just prints a message in the kernel's log. What I was thinking about now is to ...
I have developed a simple linux kernel module which I will send to it a char message from user space program. This is the module : And this my C ...
I want write something in userspace program, for example: write the value 3 in the physical address 0xF7F4900(260MB) from the start address 0x0, while ...
I am using sama5d27-som1-ek1 embedded board which i build for it Linux image operating system and a cross compiler with YOCTO project. I wanted to te ...
I want to test the performance of a userspace program in linux running on x86. To calculate the performance, it is necessary for me to flush specific ...
I have an ioctl handler in my kernel driver and that has read and write ioctls. I also have a userspace application which uses this IOCTL to write/rea ...