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Date: Thu, 19 Mar 2020 18:42:54 +0100
From: Borislav Petkov <bp@alien8.de>
Subject: Re: [PATCH -v2] treewide: Rename "unencrypted" to "decrypted"
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To: Thomas Gleixner <tglx@linutronix.de>
Cc: Robin Murphy <robin.murphy@arm.com>, Christoph Hellwig <hch@lst.de>, lkml <linux-kernel@vger.kernel.org>, Benjamin Herrenschmidt <benh@kernel.crashing.org>, Paul Mackerras <paulus@samba.org>, Michael Ellerman <mpe@ellerman.id.au>, Heiko Carstens <heiko.carstens@de.ibm.com>, Vasily Gorbik <gor@linux.ibm.com>, Christian Borntraeger <borntraeger@de.ibm.com>, Ingo Molnar <mingo@redhat.com>, x86@kernel.org, Dave Hansen <dave.hansen@linux.intel.com>, Andy Lutomirski <luto@kernel.org>, Peter Zijlstra <peterz@infradead.org>, Marek Szyprowski <m.szyprowski@samsung.com>, linuxppc-dev@lists.ozlabs.org, linux-s390@vger.kernel.org, iommu@lists.linux-foundation.org, Tom Lendacky <thomas.lendacky@amd.com>

On Thu, Mar 19, 2020 at 06:25:49PM +0100, Thomas Gleixner wrote:
> TBH, I don't see how
> 
> 	if (force_dma_decrypted(dev))
> 		set_memory_encrypted((unsigned long)cpu_addr, 1 << page_order);
>
> makes more sense than the above. It's both non-sensical unless there is

9087c37584fb ("dma-direct: Force unencrypted DMA under SME for certain DMA masks")

> a big fat comment explaining what this is about.

ACK to that.

-- 
Regards/Gruss,
    Boris.

https://people.kernel.org/tglx/notes-about-netiquette