Subject: Re: [patch 1/3] powerpc: Move 64bit VDSO to improve context switch performance

From: Benjamin Herrenschmidt <[email-masked]>
Date: Tue, 14 Jul 2009 17:07:13 +1000

On Tue, 2009-07-14 at 16:53 +1000, Anton Blanchard wrote:
> plain text document attachment (move_vdso_v2)
> On 64bit applications the VDSO is the only thing in segment 0. Since the VDSO
> is position independent we can remove the hint and let get_unmapped_area pick
> an area. This will mean the vdso will be near other mmaps and will share
> an SLB entry:

Don't we lose randomization ? Or do we randomize the whole mem map
nowadays ?

Cheers,
Ben.