Re: [RFC][PATCH] Randomize kernel base address on boot

Ingo Molnar
2011-05-29T19:57:22Z

* H. Peter Anvin <hpa@zytor.com> wrote:

> On 05/29/2011 11:44 AM, Ingo Molnar wrote:
> >
> > We could put a 2MB hole between end of text (end of X) and start of
> > readonly data (start of NX), and another 2MB hole between end of
> > readonly and start of data.
> >
>
> It still means you have memory which is X-mapped when it doesn't need to
> be, since there will be RAM in that region.

But it ought to be rather harmless in this particular case, because
the high alias addresses are all randomized!

Thanks,

Ingo