linux-kernel - Re: [PATCH 3/3] fs/core/vmcore: Move sev

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Date:   Fri, 12 Jul 2019 16:08:12 +0200
From:   Christoph Hellwig <hch@....de>
To:     Halil Pasic <pasic@...ux.ibm.com>
Cc:     Thiago Jung Bauermann <bauerman@...ux.ibm.com>, x86@...nel.org,
        iommu@...ts.linux-foundation.org, linux-fsdevel@...r.kernel.org,
        linuxppc-dev@...ts.ozlabs.org, linux-s390@...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>,
        Mike Anderson <andmike@...ux.ibm.com>,
        Ram Pai <linuxram@...ibm.com>
Subject: Re: [PATCH 3/3] fs/core/vmcore: Move sev_active() reference to x86
 arch code

On Fri, Jul 12, 2019 at 03:09:12PM +0200, Halil Pasic wrote:
> This is the implementation for the guys that don't
> have ARCH_HAS_MEM_ENCRYPT.
> 
> Means sev_active() may not be used in such code after this
> patch. What about 
> 
> static inline bool force_dma_unencrypted(void)
> {
>         return sev_active();
> }
> 
> in kernel/dma/direct.c?

FYI, I have this pending in the dma-mapping tree:

http://git.infradead.org/users/hch/dma-mapping.git/commitdiff/e67a5ed1f86f4370991c601f2fcad9ebf9e1eebb