Re: [v6 11/15] arm64/kasan: explicitly zero kasan shadow memory

[Pasha Tatashin]

On 2017-08-08 09:15, David Laight wrote:
> From: Pasha Tatashin
> > Sent: 08 August 2017 12:49
> > Thank you for looking at this change. What you described was in my
> > previous iterations of this project.
> >
> > See for example here: https://lkml.org/lkml/2017/5/5/369
> >
> > I was asked to remove that flag, and only zero memory in place when
> > needed. Overall the current approach is better everywhere else in the
> > kernel, but it adds a little extra code to kasan initialization.
>
> Perhaps you could #define the function prototype(s?) so that the flags
> are not passed unless it is a kasan build?

Hi David,

Thank you for suggestion. I think a kasan specific vmemmap (what I 
described in the previous e-mail) would be a better solution over having 
different prototypes with different builds.  It would be cleaner to have 
all kasan specific code in one place.

Pasha