Re: memory alias

[Erik M. <er...@bi...>]

On Thu, Apr 24, 2008 at 10:20:31PM +0800, Ja...@ht... wrote:
> Can someone explain the memory alias for me?
> 
> And why the memory.c will do:
> 
> /* not an alias, write the current address */
> * (u32 *)addr = addr;


When there's no address at that point (i.e.: memory is zero), we found
fresh memory. Otherwise, we must have seen it before and therefore it
was an alias (i.e.: same memory mapped on two different places). If it
is not an alias we write the current address at that address so we can
detect further on if we find this address again.

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You do realise that this disclaimer doesn't allow you to post on
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Erik

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