[PATCH][Kasan][PING] Allow to override Asan shadow offset from command line

[Jakub Jelinek]

On Mon, Sep 15, 2014 at 01:46:14PM +0400, Yury Gribov wrote:
> On 09/08/2014 06:29 PM, Yury Gribov wrote:
> >Kasan developers has asked for an option to override offset of Asan
> >shadow memory region. This should simplify experimenting with memory
> >layouts on 64-bit architectures.
> >
> >I've bootstrapped and regtested this on x64.
> >
> >Ok to commit?

I don't like it at all.  For the kernel-address perhaps it might make sense
as a param, but for userland, as it is an ABI changing option, I'm afraid
people would start to create objects/shared libraries/binaries with
ABI incompatible values.
So, if you need it for kernel, use a param that can be eventually dropped,
and limit it to kernel-address mode only.

	Jakub