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https://www.kernel.org/doc/html/latest/driver-api/early-userspace/early_userspace_support.html
Early userspace support¶. Last update: 2004-12-20 tlh “Early userspace” is a set of libraries and programs that provide various pieces of functionality that are important enough to be available while a Linux kernel is coming up, but that don’t need to be run inside the kernel itself.
http://www.primaveraspace.com/
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https://www.kernel.org/doc/html/latest/driver-api/uio-howto.html
The Userspace I/O HOWTO ... Your driver should support interrupt sharing whenever this is possible. It is possible if and only if your driver can detect whether your hardware has triggered the interrupt or not. This is usually done by looking at an interrupt status register. If your driver sees that the …
https://stackoverflow.com/questions/29215427/fuse-filesystem-in-userspace-support-on-android
Modern versions of Android utilize Fuse internally, for example to implement the emulated External Storage. However, Android is locked down and so neither 3rd party applications, not in most cases the human user, are allowed to add additional filesystems.
https://support.embeddedarm.com/support/solutions/articles/22000203743-userspace-irq-latency
Jul 30, 2018 · [Ed. Note: Originally published by Mark Featherston on April 27th, 2012] In our whitepaper on meeting real-time requirements we address "User Space Drivers with Real-time Priority". As we have many userspace drivers we have done some testing to see what kind of IRQ dispatch latency you can expect from userspace.
https://en.wikipedia.org/wiki/Help:Userspace_draft
A userspace draft is a draft of an article (or part of an article) associated with a specific user account and stored in the user namespace. Userspace drafts are distinct from drafts located in WP:Draftspace. You must create a user account to create your own userspace and be logged in to use it. Explanation:
https://bbs.archlinux.org/viewtopic.php?id=250515
Nov 06, 2019 · LTS kernel and userspace support. Hi all, Are recent package upgrades compatible with older LTS kernels? In other words, can I maintain in my system the 4.14 LTS and performing 'pacman -Syu' once a week, with the confidence that all the newest userspace package will continue to work? I am worried since the LTS kernel version maintained in the ...
https://support.embeddedarm.com/support/solutions/articles/22000202865-userspace-vs-kernel-space-drivers
Apr 20, 2017 · LCD framebuffers using userspace SysV SHM segments. Hardware watchdogs via named pipes; Temp sensors, GPIO, LEDs, hardware random number generators, buttons/keypads, etc.. by directly manipulating them via /dev/mem via simple command line utilities and shell scripts. All in all, there is very little that can't be done from userspace.
https://github.com/zephyrproject-rtos/zephyr/pull/16743
Jul 01, 2019 · Instead of modifiying net_mgmt API directly for userspace support, create a AF_NET_MGMT socket address family and use the socket API to receive network management events in userspace application. This version only implements the event listening support, but in the future we can add a way to set values in the system via network management socket implementation.
https://en.wikipedia.org/wiki/User_space
Each user space process normally runs in its own virtual memory space, and, unless explicitly allowed, cannot access the memory of other processes. This is the basis for memory protection in today's mainstream operating systems, and a building block for privilege separation.
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