linux-kernel - Re: [PATCH] powerpc/mm: Fix KUAP warning by providing copy_from_kernel_nofault

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Message-ID: <20201205130045.GA28606@lst.de>
Date:   Sat, 5 Dec 2020 14:00:45 +0100
From:   Christoph Hellwig <hch@....de>
To:     Christophe Leroy <christophe.leroy@...roup.eu>
Cc:     Christoph Hellwig <hch@....de>,
        Michael Ellerman <mpe@...erman.id.au>,
        Benjamin Herrenschmidt <benh@...nel.crashing.org>,
        Paul Mackerras <paulus@...ba.org>, viro@...iv.linux.org.uk,
        akpm@...ux-foundation.org, linux-kernel@...r.kernel.org,
        linuxppc-dev@...ts.ozlabs.org, linux-mm@...ck.org,
        Linus Torvalds <torvalds@...ux-foundation.org>
Subject: Re: [PATCH] powerpc/mm: Fix KUAP warning by providing
 copy_from_kernel_nofault_allowed()

Yes, I think at this point in the release cycle the specific powerpc
fix is safer anyway.  But this screams for an eventual general solution.