Need help understanding memory models, cpu modes and address translation

[Vaibhav Jain]

Hi,

Thanks a lot for the resources! I just had a cursory look at them and could
see that they explain virtual memory and
address translation in depth. Just wanted to ask if they explain the
concepts Memory models (flat, segmented ) and cpu modes
(real,protected) equally well. I am more confused about
these concepts.

Thanks
Vaibhav Jain

On Wed, Jul 13, 2011 at 10:40 AM, Anuz Pratap Singh Tomar <
chambilkethakur at gmail.com> wrote:

>
>
>   On Wed, Jul 13, 2011 at 6:29 PM, Jeff Haran <jharan at bytemobile.com>wrote:
>
>>  ** **
>>
>> ** **
>>
>> *From:* kernelnewbies-bounces at kernelnewbies.org [mailto:
>> kernelnewbies-bounces at kernelnewbies.org] *On Behalf Of *Vaibhav Jain
>> *Sent:* Wednesday, July 13, 2011 1:38 AM
>> *To:* Daniel Baluta
>> *Cc:* kernelnewbies at kernelnewbies.org
>> *Subject:* Re: Need help understanding memory models,cpu modes and
>> address translation****
>>
>> ** **
>>
>> Hi,
>>
>> Thanks for the link.I really appreciate but I need something more basic
>> and something that
>> explains these concepts from a broader perspective and not in the context
>> of a
>> particular cpu architecture.Please send me more such links if you come
>> across any.
>>
>> Thanks
>> Vaibhav Jain****
>>
>> On Wed, Jul 13, 2011 at 1:14 AM, Daniel Baluta <daniel.baluta at gmail.com>
>> wrote:****
>>
>> Hi,
>>
>> > I am eager to understand the basics of Memory models  (flat, segmented
>> etc)
>> > , CPU modes (real,protected)
>> > and address translation (physical to logical etc.) and how all of them
>> work
>> > together. I am very confused
>> > about this and would really appreciate if someone could provide good
>> > references to these topics.****
>>
>> You may find useful information inside i366 Programmers Manual.
>> Anyhow, reading materials is the first step in understanding these
>> concepts. You will have to actually  read/write/debug pieces of code
>> related to them.
>>
>> thanks,
>> Daniel.
>>
>> [1] pdos.csail.mit.edu/6.828/2010/readings/i386.pdf****
>>
>> ** **
>>
>> You might want to try “Understanding the Linux Virtual Memory Manager” by
>> Mel Gorman. It’s freely available on the web.****
>>
>> ** **
>>
>> It’s Linux specific, but since Linux needs to run on a multitude of
>> different processors with different memory management hardware, the approach
>> it takes to doing so in inherently broad.****
>>
>> ** **
>>
>>
>>
>>
>> A lot of basic concepts can be learnt from JIm Turley's book on 8086
> Other book is modern operating systems by Tanenbaum which explains
> everything in much detail with  code snippets.
>
>
>
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