Talk:Physical Address Extension

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PAE is A Processor Feature

“ Physical Address Extension (PAE) is a memory management feature for the IA-32 architecture... ”

Definitively, PAE is a processor feature, extending 32-bit instruction set to address more than 4GB Physical Memory. The quoted description is not strictly correct! In Intel document, PAE, is also used to reference to Page Address Extension mode.

“ When AMD defined their AMD64 architecture as an extension of x86, they defined an enhanced version of PAE to be used while the processor was in 64-bit mode ("long mode"). ”

Not strictly correct description, it is not an enhanced version of PAE, it is an enhanced version of paging schema for this new paging schema does not apply onto the Legacy 32-bit mode operation. In other words, no 32-bit linear address mapped on the 4-level paging... CopperQA (talk) 22:55, 18 September 2015 (UTC)

Regarding "page address extension": I can find no support for your position. I don't know what Intel documents you're looking at. I notice you didn't give a link... but I will.

In the most recent Intel® 64 and IA-32 Architectures Software Developer’s Manual, downloadable here, the term "page address extension" flatly does not occur. But "physical address extension" does, 20 times.

Nor does this seem to be a recent change. Here is the 1999 version of a part of the same document, chapter 3, "System Programming". Again, the term "page address extension" does not occur. "Physical address extension" does (10 times).

You will also find that Microsoft calls it "physical address extension".

The Mindshare, Inc. book on Pentum Architecture: Tom Shanley's Pentium Pro and Pentium II System Architecture, which is widely recognized as authoritative, uses "physical address extension".

You're just wrong.

Google search: "page address extension" gives about 8,000 hits. For "physical address extension", about 150,000.

Personal note: I am aware that "Page ..." is a widely-understood alternate name, but appears to me to have no official standing. I prefer "Physical..." because, besides being the official name, it's more precise. "Page address extension" could be interpreted as referring to addresses of either physical or virtual pages, which of course would be incorrect. If the two terms had equal or nearly equal standing, even within an order of magnitude in terms of hit counts, I would still argue vehemently for WP's preferring "physical..." on that basis. But they don't have equal standing. Jeh (talk) 02:45, 19 September 2015 (UTC)

This is a typical way of explanation by Jeh, this section is talking about PAE is a processor feature, and an enhanced paging schema. But all his/her words are dealing with

“ In Intel document, PAE, is also used to reference to Page Address Extension mode. ”

,

trying best to use this as the reason or proof to get rid of the one who figures out his/her mistake. I do not think this reply would help to answer this section or improve the main article. CopperQA (talk) 03:02, 19 September 2015 (UTC)

I haven't gotten around to replying to your complaint about "enhanced paging schema". Jeh (talk) 04:28, 19 September 2015 (UTC)

Readers who are interested in the phrase page address extension (PAE) mode, please check page 18 of http://download.intel.com/support/processors/xeon/sb/309159.pdf CopperQA (talk) 03:16, 19 September 2015 (UTC)

Ok, you found an authoritative reference for the use of the term. Still, googling for { page address extension site:intel.com } yields only 11 hits. Change to "physical" and we get more than ten times that many. The Software Developer's Manual is still the more authoritative source, backed up by AMD, Microsoft, Mindshare, etc., so the article name should not change. But I have added the mention of this alternate name to the lede, with your link as a ref. Note that we already had a redirect from Page Address Extension, accordingly the term is bolded in the new text. Jeh (talk) 04:25, 19 September 2015 (UTC)

I have completely no ideas whether I should say thank you to Jeh, because I just mentioned, In Intel document, PAE', is also used to reference to Page Address Extension, without additional word around it. Wow, ridiculous! I wonder whether there would be some normal replies in the future? CopperQA (talk) 04:45, 19 September 2015 (UTC)

Meaningless Replies or Damaging Threats towards Wikipedia

From Jeh,

Reported as likely sock of serial sockmaster Janagewen. https://en.wikipedia.org/wiki/Wikipedia:Sockpuppet_investigations/Janagewen Jeh (talk) 00:00, 19 September 2015 (UTC)

this list might be enlarged in uncertain future time. CopperQA (talk) 00:30, 19 September 2015 (UTC)