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Date:   Thu, 28 Jun 2018 08:17:59 +0200
From:   Luc Van Oostenryck <luc.vanoostenryck@gmail.com>
To:     Catalin Marinas <catalin.marinas@arm.com>
Cc:     Ramana Radhakrishnan <ramana.radhakrishnan@arm.com>,
        Andrey Konovalov <andreyknvl@google.com>,
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Subject: Re: [PATCH v4 0/7] arm64: untag user pointers passed to the kernel
Message-ID: <20180628061758.j6bytsaj5jk4aocg@ltop.local>
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On Wed, Jun 27, 2018 at 06:17:58PM +0100, Catalin Marinas wrote:
> 
> sparse is indeed an option. The current implementation doesn't warn on
> an explicit cast from (void __user *) to (unsigned long) since that's a
> valid thing in the kernel. I couldn't figure out if there's any other
> __attribute__ that could be used to warn of such conversion.

Hi,

sparse doesn't have such attribute but would an new option that would warn
on such cast be a solution for your case?

-- Luc