Re: [PATCH v8 1/4] syscalls: Verify address limit before returning to user-mode

* Thomas Garnier [off-list ref] wrote:

quoted

BTW., a further simplification would be:

#ifndef ADDR_LIMIT_CHECK_PRE
# define ADDR_LIMIT_CHECK_PRE ...
#endif

This way architectures could override this generic functionality simply by
defining the helpers. Architectures that don't do that get the generic version.

I don't think architectures need to do that. The optimizations are
embedding the checks on their architecture-specific code to make it
faster and remove the size impact. The pre/post is fine for the rest.

Indeed, only the generic code needs to turn off that code - architectures will 
place these callbacks elsewhere.

Thanks,

	Ingo