From: mindentropy@gmail.com (mindentropy)
To: kernelnewbies@lists.kernelnewbies.org
Subject: VMA of processes and CPU registers
Date: Wed, 20 Apr 2011 21:33:39 +0530 [thread overview]
Message-ID: <201104202133.39612.mindentropy@gmail.com> (raw)
In-Reply-To: <SNT111-DS139832BD4CC4EAD1B5B77EA7930@phx.gbl>
On Wednesday 20 Apr 2011 4:31:08 pm limp wrote:
> Thanks a lot Dace and Vladimir for your replies.
>
> First of all, I forgot to mention that I am talking for x86 architecture.
>
> > The CPU registers will contain the virtual addresses. Each and every
> > time that the CPU tries to access a virtual memory location, then the
> > address will be translated by the MMU into a physical address.
>
> So, AFAIU the translation to physical memory takes place *only* when the
> ALU of the processor has to do some operation which has memory operands
> (in this case the CPU needs to deal with the *real* addresses) but not
> prior to that.
>
The address translation happens in the following way:
Logical Addr-->|Segmentation Unit|-->Linear Addr -->|Paging unit|--> Physical
Addr.
If the paging unit is not setup then the linear addr is the physical addr.
next prev parent reply other threads:[~2011-04-20 16:03 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-04-19 22:56 VMA of processes and CPU registers limp
2011-04-19 23:20 ` Dave Hylands
2011-04-20 11:01 ` limp
2011-04-20 16:03 ` mindentropy [this message]
2011-04-25 8:55 ` Prabhu nath
2011-04-25 16:38 ` mindentropy
2011-04-27 4:33 ` Prabhu nath
2011-04-27 4:48 ` Mulyadi Santosa
2011-04-27 18:30 ` mindentropy
2011-04-20 17:30 ` Dave Hylands
2011-04-20 18:08 ` mindentropy
2011-04-21 1:22 ` Dave Hylands
2011-04-21 19:54 ` mindentropy
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