Re: [PATCH 0/3] livepatch: add shadow variable API

From: Jiri Kosina
Date: Thu Jun 01 2017 - 16:32:23 EST


On Thu, 1 Jun 2017, Joe Lawrence wrote:

> * the intention is that only livepatched code will be calling
> klp_shadow_*, so it can assume that the current task is patched

Ah, okay, that fully answers my question, thanks. That makes it impossible
though to apply the same technique to a single variable twice, without
further tweaks (either versioning of the variables, or actually stacking
the shadowing itself).

Honestly though, I don't think that's going to be a big issue in practice.

> Maybe I misunderstood the question... if so, I can update the
> documentation file to better describe what's going on.

I think you didn't misunderstand it. But it might be beneficial to have a
few additional explanatory words in the documentation nevertheless :)

Thanks,

--
Jiri Kosina
SUSE Labs