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Groups > alt.os.assembly > #18

Re: Protected mode on 64-bit CPU

From Rod Pemberton <NoHaveNotOne@zxdehrnyya.cam>
Newsgroups alt.os.assembly, alt.lang.asm, alt.os.development
Subject Re: Protected mode on 64-bit CPU
Date 2016-09-03 23:17 -0400
Organization Aioe.org NNTP Server
Message-ID <20160903231714.401eef2c@_> (permalink)
References <563a8630-6a56-4480-9b76-d519ca60acbe@googlegroups.com>

Cross-posted to 3 groups.

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On Sat, 3 Sep 2016 19:10:19 -0700 (PDT)
muskrat7@gmail.com wrote:

> Does anyone know why 64-bit long mode does not have built-in hardware
> protection? I know many didn't use the 32-bit hardware segmentation
> but it was a nice option to have if you wanted... Did they just get
> rid of it in 64-bit mode due to the perception it wouldn't be used or
> were there other limitations that prevented this feature?
>

I'm cross-posting this to alt.os.development and alt.lang.asm.

You might also try posts to comp.lang.asm.x86 and comp.arch.


Rod Pemberton

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Thread

Protected mode on 64-bit CPU muskrat7@gmail.com - 2016-09-03 19:10 -0700
  Re: Protected mode on 64-bit CPU Rod Pemberton <NoHaveNotOne@zxdehrnyya.cam> - 2016-09-03 23:17 -0400
    Re: Protected mode on 64-bit CPU "wolfgang kern" <nowhere@never.at> - 2016-09-04 11:27 +0200
    Re: Protected mode on 64-bit CPU James Harris <james.harris.1@gmail.com> - 2016-09-04 13:01 +0100
      Re: Protected mode on 64-bit CPU Muskrat <muskrat7@gmail.com> - 2016-09-04 10:10 -0700
      Re: Protected mode on 64-bit CPU James Harris <james.harris.1@gmail.com> - 2016-09-04 21:53 +0100

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