linux-kernel - Re: [PATCH v9 2/2] iommu/amd: Add basic debugfs infrastructure for AMD IOMMU

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Date:   Tue, 25 Sep 2018 09:51:04 +0200
From:   Joerg Roedel <joro@...tes.org>
To:     Geert Uytterhoeven <geert@...ux-m68k.org>
Cc:     gary.hook@....com, Linux IOMMU <iommu@...ts.linux-foundation.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Arnd Bergmann <arnd@...db.de>,
        Masahiro Yamada <yamada.masahiro@...ionext.com>,
        linux-kbuild <linux-kbuild@...r.kernel.org>
Subject: Re: [PATCH v9 2/2] iommu/amd: Add basic debugfs infrastructure for
 AMD IOMMU

On Mon, Aug 27, 2018 at 08:56:50AM +0200, Geert Uytterhoeven wrote:
> If it is that bad, shouldn't this option be protected by some Kconfig
> trickery to avoid it being enabled in allmodconfig/allyesconfig builds?

It is fine to have it in allmodconfig/allyesconfig, I just don't want
any distro-kernel enable it so that these internals become a user-space
ABI or leak security sensitive data on everyones system. This is
intended to be a pure debugging feature for development.


Regards,

	Joerg