Talk:User space and kernel space

message: I'm pretty sure that JX proposed using language-based protection instead of VM separation in a kernel before Unununium (operating system) did, but then I don't actually know when work on the latter started, so I'm not going to change it. JulesH 10:56, 10 October 2006 (UTC)
thread_title:  Using program language safety 

message: How does user space relate to early user space?
:Catleeball (talk) 22:42, 6 June 2017 (UTC)
thread_title:  early user space 

message: I suggest this article should be renamed to kernel space and user space. --Octra Bond (talk) 03:17, 18 April 2011 (UTC)
replies: text:  I second this.72.174.71.134 (talk) 22:14, 24 September 2020 (UTC)
thread_title:  Rename? 

message: The term Userland usually refers to the various programs and libraries that the rest of the operating system uses to interact with the kernel
The Template:Infobox OS contains the term userland. An example from Debian are the GNU Core Utilities. But what about libraries to interact with the Kernel? Is D-Bus such an IPC? Or the C standard library or uClibc?  — Preceding unsigned comment added by Echinacin35 (talk • contribs) 09:40, 12 May 2013 (UTC)
thread_title:  Userland 

message: This article is totally hosed and utter bullshit.  — Preceding unsigned comment added by 96.47.97.42 (talk) 20:21, 30 August 2016 (UTC)
replies: text: Fixed lede. User:Dreamer (aka Mark)  — Preceding unsigned comment added by 96.47.97.42 (talk) 20:37, 30 August 2016 (UTC)

text: How so? -- Evilninja (talk) 21:48, 30 August 2016 (UTC)
thread_title:  Utter Bullshit 

message: What's the difference between these three things? The lead section should clarify this. This article is really poorly written at the moment anyway, too.
104.228.101.152 (talk) 05:29, 22 December 2016 (UTC)
thread_title:  "User land", "User mode", "User space" 

message: Kernel space currently redirects here.  Can we also please have kernelspace redirect here? 47.32.217.164 (talk) 18:21, 20 August 2017 (UTC)
replies: text: -- intgr [talk] 18:29, 20 August 2017 (UTC)
thread_title:  Kernelspace redirect 

message: "The term userland (or User Space) refers to all code that runs outside the operating system's kernel.[1]"
The citation is to Eric Raymond, so it's not going to be an inclusive definition. In Windows, user space refers to code running above the executive. Below the executive the kernel is one piece. The discrepancy is because of basic differences in the microkernel/monolithic kernel approaches. In any case, this entire article does a disservice to non-Linux architectures including other forms of Unix. SchmuckyTheCat (talk) 05:30, 1 January 2019 (UTC)
replies: text: Do you have any better OS-independent or Windows-specific sources? I don't think these terms are used much in the Windows world although the concepts are analogous. -- intgr [talk] 17:28, 2 January 2019 (UTC)
replies: text: Russonivich (sp?) books on Windows Internals might have a definition. The concepts are analogous and several Windows architecture articles point to this article, so it's important to get it right and neutral. SchmuckyTheCat (talk) 09:55, 4 January 2019 (UTC)

text: My key issue with this article is its reliance on Linux as the only example. This implies that "user space" is a feature of Linux and not a concept. The table, using only Linux as its example, drives home this impression. It might be helpful if the table were either clearly labeled to indicate that Linux is being used as but one example, or the table should include non-Linux examples. Both microkernels and monolithic kernels have the concept of "user space" and "kernel space;" the only difference is scope. Similarly, Windows may not use the term "user space" but the concept exists nonetheless. I also take issue with the "Notes" section. One could argue that "user space" is/is not an architectural element of OS design; however, conceptually, CP/M, DOS, Windows, etc. do have the (more rudimentary) concept of "user space" and "kernel space" through the use of services, interrupt hooks, TSRs, etc.  There may not be OS-independent sources to cite; as a matter of fact, many different OSes may need to be cited to provide a more rounded impression of the concept. I'm not comfortable with the primary citation being a personal website defining jargon. Rusty.pole (talk) 12:39, 26 February 2019 (UTC)
thread_title: Lunix bias