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Tue, 17 Mar 2020 21:25:01 +0000 (UTC) X-Greylist: domain auto-whitelisted by SQLgrey-1.7.6 Received: from mga03.intel.com (mga03.intel.com [134.134.136.65]) by fraxinus.osuosl.org (Postfix) with ESMTPS id 27F35873FA for ; Tue, 17 Mar 2020 21:25:01 +0000 (UTC) IronPort-SDR: nZNGOhu8jUU/qgPoW7ViLJkJ4vMAuqCSBxqc8+eVmV/ZZ3u13w48Ad59OjHGT1O4bHTBrAX3KI tc7qCiXZiAEw== X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga006.jf.intel.com ([10.7.209.51]) by orsmga103.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 17 Mar 2020 14:25:00 -0700 IronPort-SDR: E/XxKLvzbd76Edz4DBiEjgXjvB5DhmPwJNrjXVgFuhT1EfqbjKYf8TfObqf7cJrznNaIvQPf0J AwSPLn0zck3g== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.70,565,1574150400"; d="scan'208";a="247961428" Received: from dslea-mobl.amr.corp.intel.com (HELO [10.251.3.73]) ([10.251.3.73]) by orsmga006.jf.intel.com with ESMTP; 17 Mar 2020 14:24:59 -0700 Subject: Re: [PATCH] treewide: Rename "unencrypted" to "decrypted" To: Borislav Petkov References: <20200317111822.GA15609@zn.tnic> <2cb4a8ae-3b13-67bd-c021-aee47fdf58c5@intel.com> <20200317210602.GG15609@zn.tnic> From: Dave Hansen Openpgp: preference=signencrypt Autocrypt: addr=dave.hansen@intel.com; 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Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.9.0 MIME-Version: 1.0 In-Reply-To: <20200317210602.GG15609@zn.tnic> Content-Language: en-US Cc: "Schofield, Alison" , Peter Zijlstra , Benjamin Herrenschmidt , Dave Hansen , Heiko Carstens , Paul Mackerras , Christoph Hellwig , linux-s390@vger.kernel.org, Michael Ellerman , x86@kernel.org, Christian Borntraeger , Ingo Molnar , Borislav Petkov , Tom Lendacky , Vasily Gorbik , "Shutemov, Kirill" , Andy Lutomirski , Thomas Gleixner , Robin Murphy , lkml , iommu@lists.linux-foundation.org, linuxppc-dev@lists.ozlabs.org X-BeenThere: iommu@lists.linux-foundation.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Development issues for Linux IOMMU support List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: iommu-bounces@lists.linux-foundation.org Sender: "iommu" On 3/17/20 2:06 PM, Borislav Petkov wrote: > On Tue, Mar 17, 2020 at 01:35:12PM -0700, Dave Hansen wrote: >> On 3/17/20 4:18 AM, Borislav Petkov wrote: >>> Back then when the whole SME machinery started getting mainlined, it >>> was agreed that for simplicity, clarity and sanity's sake, the terms >>> denoting encrypted and not-encrypted memory should be "encrypted" and >>> "decrypted". And the majority of the code sticks to that convention >>> except those two. So rename them. >> Don't "unencrypted" and "decrypted" mean different things? >> >> Unencrypted to me means "encryption was never used for this data". >> >> Decrypted means "this was/is encrypted but here is a plaintext copy". > Maybe but linguistical semantics is not the point here. > > The idea is to represent a "binary" concept of memory being encrypted > or memory being not encrypted. And at the time we decided to use > "encrypted" and "decrypted" for those two things. Yeah, agreed. We're basically trying to name "!encrypted". > Do you see the need to differentiate a third "state", so to speak, of > memory which was never encrypted? No, there are just two states. I just think the "!encrypted" case should not be called "decrypted". _______________________________________________ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/iommu