Linked by Thom Holwerda on Thu 21st Jul 2011 14:10 UTC, submitted by Jennimc
Mozilla & Gecko clones "Over the last couple of weeks, Mozilla has finally stepped up its 64-bit testing process. There are now five slaves dedicated to building Firefox for Windows x64, which means that from Firefox 8 and onwards, you'll be able to pick up 64-bit builds that are functionally identical to its 32-bit cousins but operating in native 64-bit CPU and memory space." Th 64bit version is about 10% faster, benchmarks show.
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RE[6]: Old news
by Surtur on Fri 22nd Jul 2011 17:18 UTC in reply to "RE[5]: Old news"
Surtur
Member since:
2009-04-15

Did you bang your head or something?


No need for argumentum ad hominem.

While proper quoting would be a nice thing, to make my point, I was giving you in my first paragraph an idea why 64bit OS versions (aside from 4GB of memory), like in my case OpenBSD, may make sense for some people:

While this may be true for many users like you I personally consider (being an OpenBSD user) native NX-bit support without hacks quite a feature


This refers to the situation that for OpenBSD/i386 (refering to the slides) only the emulation of W^X is used. If you want to use true W^X you have to use OpenBSD/amd64. Aside from that as this emulation seems to work for all IA-32 Processors, hence:

(When we are at it, which has nothing to do with it, OpenBSD even emulates it for Processors not capable of.)


To let that aside and go to Linux which you were actually refering to:

Some desktop Linux distributions such as Fedora Core 6, Ubuntu and openSUSE do not enable the HIGHMEM64 option by default, which is required to gain access to the NX bit in 32-bit mode, in their default kernel; this is because the PAE mode that is required to use the NX bit causes pre-Pentium Pro (including Pentium MMX) and Celeron M and Pentium M processors without NX support to fail to boot.


As pointed out explicitly in my last post this refers to the fact that there may be cases for people where this
Running 64Bit Linux before that was just useless, really
is wrong. (Quite clear as it is an generalization).

Hereby did I with no word question the capability of Microsoft Windows regarding DEP.

Hope I now made it clear for you this time...

Edited 2011-07-22 17:19 UTC

Reply Parent Score: 1