Hi Syed. On Thu, Mar 31, 2011 at 12:55 AM, sk.syed2 <[email protected]> wrote:
> > The 2 lines above > > 1: orr r3, r7, r5, lsl #20 @ flags + kernel base ==> Correct > > str r3, [r4, r5, lsl #2] @ identity mapping ==> ?? > > > > create a section entry using index based on physical address. > Lets say before mmu is turned on PC is at physical address XXX, also > say at XXX there is going to be mmu on instruction. The next > instruction fetch would be from XXX + 4 which would now be VIRTUAL > address(as mmu is turned on), which should still get converted to (via > page tables set up as above) to XXX + 4 (in physical). This is called > identity mapping as specified in the comments. Hope this helps. > > [Prakash]Awesome. This is indeed very insightful. I am now starting to understand this portion of the kernel better. Thanks a lot. :-) > _______________________________________________ > Kernelnewbies mailing list > [email protected] > http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies > -Prakash
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