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Message-ID: <CA+55aFyRV9KXzeQZpVYsZYVUJm-ASgu_4_1+8Y8-0KH-YT2M8Q@mail.gmail.com>
Date: Thu, 15 Mar 2018 16:46:57 -0700
From: Linus Torvalds <torvalds@...ux-foundation.org>
To: Kees Cook <keescook@...omium.org>
Cc: Andrew Morton <akpm@...ux-foundation.org>, Josh Poimboeuf <jpoimboe@...hat.com>,
Rasmus Villemoes <linux@...musvillemoes.dk>, Randy Dunlap <rdunlap@...radead.org>,
Miguel Ojeda <miguel.ojeda.sandonis@...il.com>, Ingo Molnar <mingo@...nel.org>,
David Laight <David.Laight@...lab.com>, Ian Abbott <abbotti@....co.uk>,
linux-input <linux-input@...r.kernel.org>, linux-btrfs <linux-btrfs@...r.kernel.org>,
Network Development <netdev@...r.kernel.org>,
Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
Kernel Hardening <kernel-hardening@...ts.openwall.com>
Subject: Re: [PATCH v4 1/2] kernel.h: Introduce const_max() for VLA removal
On Thu, Mar 15, 2018 at 4:41 PM, Kees Cook <keescook@...omium.org> wrote:
>
> I much prefer explicit typing, but both you and Rasmus mentioned
> wanting the int/sizeof_t mixing.
Well, the explicit typing allows that mixing, in that you can just
have "const_max_t(5,sizeof(x))"
So I'm ok with that.
What I'm *not* so much ok with is "const_max(5,sizeof(x))" erroring
out, or silently causing insane behavior due to hidden subtle type
casts..
Linus
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