Re: [PATCH] drm/i915: clarify reasoning for the access_ok call

From: Chris Wilson
Date: Mon Mar 11 2013 - 17:13:36 EST

On Mon, Mar 11, 2013 at 02:04:51PM -0700, Kees Cook wrote:
> Probably not. It just seemed like the existing comment was
> insufficient after the removal of the redundant VERIFY_READ check that
> happened recently.

That's certainly true, the remaining comment is a little cryptic.
Something more like:

/* We need to check that we can read the entire relocation array, but
* as we may need to update the presumed_offsets upon execution, we
* need to check now for full write access.

Chris Wilson, Intel Open Source Technology Centre
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