I understand about Linear virtual address and Physical address. How is the logical address generated ? Can you please explain.
Thanks, Prabhu On Wed, Apr 20, 2011 at 9:33 PM, mindentropy <[email protected]> wrote: > 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. > > _______________________________________________ > Kernelnewbies mailing list > [email protected] > http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies >
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