Subject: Re: double kernel page table entry for the same physical page?!

From: Dan Malek <[email-masked]>
Date: Wed, 13 Jul 2005 15:36:13 -0700

On Jul 13, 2005, at 2:48 PM, ming lei wrote:

> Why linux kernel does such thing and no one consider
> it's a problem?

Because we don't write software that accesses the memory
from both of those locations, unless it is very intentional
and necessary.  If you are just fishing for ways software
_could_ do bad things, there are tons of them.  It's our
job to write it so it doesn't :-)

Thanks.

	-- Dan