Misplaced Pages

This is an old revision of this page, as edited by ClueBot III (talk | contribs) at 00:04, 30 November 2018 (Archiving 1 discussion to Talk:Physical Address Extension/Archives/2018/September. (BOT)). The present address (URL) is a permanent link to this revision, which may differ significantly from the current revision.

This article has not yet been rated on Misplaced Pages's content assessment scale. It is of interest to the following WikiProjects:

Please add the quality rating to the {{WikiProject banner shell}} template instead of this project banner. See WP:PIQA for details. Microsoft Windows: Computing Mid‑importance This article is within the scope of WikiProject Microsoft Windows, a collaborative effort to improve the coverage of Microsoft Windows on Misplaced Pages. If you would like to participate, please visit the project page, where you can join the discussion and see a list of open tasks.Microsoft WindowsWikipedia:WikiProject Microsoft WindowsTemplate:WikiProject Microsoft WindowsMicrosoft Windows Mid This article has been rated as Mid-importance on the project's importance scale. This article is supported by WikiProject Computing (assessed as Mid-importance). Please add the quality rating to the {{WikiProject banner shell}} template instead of this project banner. See WP:PIQA for details. Computing Mid‑importance This article is within the scope of WikiProject Computing, a collaborative effort to improve the coverage of computers, computing, and information technology on Misplaced Pages. If you would like to participate, please visit the project page, where you can join the discussion and see a list of open tasks.ComputingWikipedia:WikiProject ComputingTemplate:WikiProject ComputingComputing Mid This article has been rated as Mid-importance on the project's importance scale.

Archives (Index)

2014/August 2015/February 2015/June 2015/August 2016/July 2017/January 2017/June 2018/September 2020/February 2022/February

This page is archived by ClueBot III.

As to the PAE kernel for Linux

That is a long and old news that even though the processors, x86 or IA-32, lack support of PAE, could also be equipped with PAE kernel. As to the further information, one could retrieve such information from Linux kernel source, from http://www.kernel.org. — Preceding unsigned comment added by 119.53.112.209 (talk) 00:42, 9 May 2017 (UTC)

The only kernels that can run on a processor without PAE support are 1) kernels without PAE support and 2) kernels that check whether the hardware supports PAE, enables it if and only if present, and, depending on whether PAE is enabled or not, use different code to manage page table entries.

If you look at the Linux kernel source, in arch/x86/include/asm/pgtable_32_types.h, you'll see a comment

   /*
    * The Linux x86 paging architecture is 'compile-time dual-mode', it
    * implements both the traditional 2-level x86 page tables and the
    * newer 3-level PAE-mode page tables.
    */

and, in fact, whether the kernel uses pre-PAE or PAE page tables on 32-bit x86 processors is set at compile time, not determined at run time, so a kernel with PAE support will work only on a machine that supports PAE; a kernel without PAE support will work on a machine that supports PAE, but it won't use PAE and will only handle 4GB of physical memory.

So, no, you can't run a PAE kernel on a processor that lacks PAE support; anybody who believes that it does either hasn't read the Linux kernel source or read it but didn't understand it. Guy Harris (talk) 03:34, 9 May 2017 (UTC)

yeah, you are definitely correct! — Preceding unsigned comment added by 119.53.116.164 (talk) 12:50, 9 May 2017 (UTC)

 Done

32 bit Windows specific

If the Microsoft Windows discussed is specific to 32 bit, then it would be more clearer to put them in the header. As many people who reads the page for quick reference may miss this detail.

Tsenapathy (talk) 17:40, 29 November 2018 (UTC)

PAE is a processor feature. Information about support in specific OSs (Windows or otherwise) therefore does not belong in the article header. The processor feature would exist even if no OSs supported it. Jeh (talk) 17:59, 29 November 2018 (UTC)

• All unassessed articles
• C-Class Microsoft Windows articles
• Mid-importance Microsoft Windows articles
• C-Class Computing articles
• Mid-importance Computing articles
• All Computing articles
• WikiProject Microsoft Windows articles