linux-kernel - Re: [tip:x86/mm] x86, mm: Use a bitfield to mask nuisance get

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <CA+55aFzmWfOQzVMPJUah3oEsn-aaeN5qtO=7P3MQUfLZmEFJZA@mail.gmail.com>
Date:	Mon, 11 Feb 2013 20:47:15 -0800
From:	Linus Torvalds <torvalds@...ux-foundation.org>
To:	"H. Peter Anvin" <hpa@...or.com>
Cc:	Ingo Molnar <mingo@...nel.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Jamie Lokier <jamie@...reable.org>,
	ville.syrjala@...ux.intel.com, Borislav Petkov <bp@...en8.de>,
	Russell King - ARM Linux <linux@....linux.org.uk>,
	Thomas Gleixner <tglx@...utronix.de>,
	linux-tip-commits@...r.kernel.org, "H.J. Lu" <hjl.tools@...il.com>
Subject: Re: [tip:x86/mm] x86, mm: Use a bitfield to mask nuisance get_user() warnings

On Mon, Feb 11, 2013 at 8:42 PM, Linus Torvalds
<torvalds@...ux-foundation.org> wrote:
>
> But I don't see anything fundamentally wrong with it. Certainly it
> looks much better than the disgusting and warning-prone
>
>     unsigned long long __val_gu8
>
> thing.

Oh. I just realized. That was your _baseline_ in the comparisons, wasn't it?

Can you please make the baseline be the current mainline git version
of <asm/uaccess.h>, not the first "unsigned long long __val_gu8"
version of the 64-bit get_user()?

Because we should compare against the straightforward code, not the
one that could have messed things up already..

              Linus
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/