linux-kernel - Re: [PATCH] ARC: uaccess: get_user to zero out dest in cause of fault

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Message-ID: <365D9EA9-67B4-47E1-8BD3-1C0095F717DA@zytor.com>
Date:   Mon, 22 Aug 2016 17:09:10 -0700
From:   "H. Peter Anvin" <hpa@...or.com>
To:     David Miller <davem@...emloft.net>, torvalds@...ux-foundation.org
CC:     viro@...iv.linux.org.uk, jakub@...hat.com,
        Vineet.Gupta1@...opsys.com, linux-arch@...r.kernel.org,
        linux-kernel@...r.kernel.org, mingo@...hat.com
Subject: Re: [PATCH] ARC: uaccess: get_user to zero out dest in cause of fault

On August 22, 2016 4:57:10 PM PDT, David Miller <davem@...emloft.net> wrote:
>From: Linus Torvalds <torvalds@...ux-foundation.org>
>Date: Mon, 22 Aug 2016 16:48:00 -0700
>
>> How new is it? The whole point was that we'd not have to worry and
>> wait for gcc features..
>
>It's been around for a long time.
>
>I'd say at least gcc-3.0 and later support it.

I think on some architectures it simply calls the library function, but that's okay.
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