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From: Florian Philipp <f.philipp@addcom.de>
To: gentoo-user@lists.gentoo.org
Subject: Re: [gentoo-user] Semi OT: 64 bit processors, the Linux Kernel, and x86 Gentoo.
Date: Fri, 25 May 2007 15:06:20 +0200	[thread overview]
Message-ID: <200705251506.24136.f.philipp@addcom.de> (raw)
In-Reply-To: <d9a0a6da0705250531x7742feb1ja345e7ca2480af18@mail.gmail.com>

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Am Freitag 25 Mai 2007 14:31 schrieb Denis:
> > > What makes the difference between a 64 bit kernel, and a 32 bit kernel?
> >
> > Use of 64-bit machine code [*], particularly instructions that make use
> > of 64-bit native[**] registers[***].
>
> Is there any slowdown for the 64-bit set-up when it has to run 32-bit
> software?
>
> Aside from not having the 64-bit Flash for Firefox, are most popular
> packages in Gentoo portage 64-bit compatible?

There is no additional slow down for AMD64 / EM64T since it's (simplified) 
just a normal 86 with some extra registers and instructions to handle them.* 

There are some annoyances (for example Google Earth doesn't start at the 
moment) but I don't miss anything else. And concerning flash: There are ways 
to work around it (somewhere in the wiki, look for an AMD64-Howto). 

* simplified

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  reply	other threads:[~2007-05-25 13:13 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2007-05-25  9:53 [gentoo-user] Semi OT: 64 bit processors, the Linux Kernel, and x86 Gentoo burlingk
2007-05-25 11:08 ` Boyd Stephen Smith Jr.
2007-05-25 12:31   ` Denis
2007-05-25 13:06     ` Florian Philipp [this message]
  -- strict thread matches above, loose matches on Subject: below --
2007-05-25 14:12 burlingk
2007-05-25 19:54 ` Peter Alfredsen
2007-05-25 12:44 burlingk
2007-05-25 13:54 ` Peter Alfredsen
2007-05-25  9:09 burlingk
2007-05-25  9:28 ` Boyd Stephen Smith Jr.
2007-05-25  7:12 burlingk
2007-05-25  8:07 ` Boyd Stephen Smith Jr.

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