linux-kernel - Re: [PATCH v3 4/6] x86,s390/mm: Move sme_active() and sme_me

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Date:   Thu, 18 Jul 2019 19:56:55 +0200
From:   Christoph Hellwig <hch@....de>
To:     "Lendacky, Thomas" <Thomas.Lendacky@....com>
Cc:     Thiago Jung Bauermann <bauerman@...ux.ibm.com>,
        "x86@...nel.org" <x86@...nel.org>,
        "iommu@...ts.linux-foundation.org" <iommu@...ts.linux-foundation.org>,
        "linux-fsdevel@...r.kernel.org" <linux-fsdevel@...r.kernel.org>,
        "linuxppc-dev@...ts.ozlabs.org" <linuxppc-dev@...ts.ozlabs.org>,
        "linux-s390@...r.kernel.org" <linux-s390@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>, Borislav Petkov <bp@...en8.de>,
        "H. Peter Anvin" <hpa@...or.com>, Christoph Hellwig <hch@....de>,
        Marek Szyprowski <m.szyprowski@...sung.com>,
        Robin Murphy <robin.murphy@....com>,
        Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>,
        Alexey Dobriyan <adobriyan@...il.com>,
        Halil Pasic <pasic@...ux.ibm.com>,
        Mike Anderson <andmike@...ux.ibm.com>,
        Ram Pai <linuxram@...ibm.com>
Subject: Re: [PATCH v3 4/6] x86,s390/mm: Move sme_active() and sme_me_mask
 to x86-specific header

On Thu, Jul 18, 2019 at 05:42:18PM +0000, Lendacky, Thomas wrote:
> You may want to try and build the out-of-tree nvidia driver just to be
> sure you can remove the EXPORT_SYMBOL(). But I believe that was related
> to the DMA mask check, which now removed, may no longer be a problem.

Out of tree driver simply don't matter for kernel development decisions.