linux-kernel - Re: [PATCH v3 2/7] x86: use s64* for old arg of atomic64_try

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Message-ID: <4201c3bf-1e00-e98d-e5ae-4de2976b4a1d@virtuozzo.com>
Date:   Fri, 16 Jun 2017 18:41:35 +0300
From:   Andrey Ryabinin <aryabinin@...tuozzo.com>
To:     Dmitry Vyukov <dvyukov@...gle.com>, mark.rutland@....com,
        peterz@...radead.org, mingo@...hat.com, will.deacon@....com,
        hpa@...or.com
Cc:     Andrew Morton <akpm@...ux-foundation.org>,
        kasan-dev@...glegroups.com, linux-mm@...ck.org,
        linux-kernel@...r.kernel.org, x86@...nel.org
Subject: Re: [PATCH v3 2/7] x86: use s64* for old arg of
 atomic64_try_cmpxchg()

On 06/06/2017 01:11 PM, Dmitry Vyukov wrote:
> atomic64_try_cmpxchg() declares old argument as long*,
> this makes it impossible to use it in portable code.
> If caller passes long*, it becomes 32-bits on 32-bit arches.
> If caller passes s64*, it does not compile on x86_64.
> 
> Change type of old arg to s64*.
> 
> Signed-off-by: Dmitry Vyukov <dvyukov@...gle.com>
> Cc: Mark Rutland <mark.rutland@....com>
> Cc: Peter Zijlstra <peterz@...radead.org>
> Cc: Will Deacon <will.deacon@....com>
> Cc: Andrew Morton <akpm@...ux-foundation.org>
> Cc: Andrey Ryabinin <aryabinin@...tuozzo.com>
> Cc: Ingo Molnar <mingo@...hat.com>
> Cc: "H. Peter Anvin" <hpa@...or.com>
> Cc: kasan-dev@...glegroups.com
> Cc: linux-mm@...ck.org
> Cc: linux-kernel@...r.kernel.org
> Cc: x86@...nel.org
> ---

Reviewed-by: Andrey Ryabinin <aryabinin@...tuozzo.com>