double kernel page table entry for the same physical page?!

[Dan Malek]

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