linux-kernel - Re: [PATCH 6/8] x86/kaslr: Simplify process_gb_huge

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Message-ID: <20200728105821.GC222284@gmail.com>
Date:   Tue, 28 Jul 2020 12:58:21 +0200
From:   Ingo Molnar <mingo@...nel.org>
To:     Arvind Sankar <nivedita@...m.mit.edu>
Cc:     Kees Cook <keescook@...omium.org>, x86@...nel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 6/8] x86/kaslr: Simplify process_gb_huge_pages


* Arvind Sankar <nivedita@...m.mit.edu> wrote:

> Short-circuit the whole function on 32-bit.
> 
> Replace the loop to determine the number of 1Gb pages with arithmetic.
> 
> Fix one minor bug: if the end of the region is aligned on a 1Gb
> boundary, the current code will not use the last available 1Gb page due
> to an off-by-one error.

Please split this up into two patches: first the minor bugfix, and 
then the cleanup which will then be an invariant patch, in principle.

Thanks,

	Ingo