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Mon, 21 Sep 2026 15:24:25 -0700 (PDT) X-Received: by 2002:a17:90b:4b85:b0:3a0:42a9:9c73 with SMTP id 98e67ed59e1d1-3a042a99fd2mr5462337a91.38.1790029465452; Mon, 21 Sep 2026 15:24:25 -0700 (PDT) Received: from localhost ([50.35.44.179]) by smtp.gmail.com with ESMTPSA id 5a478bee46e88-33e613014aasm34921eec.22.2026.09.21.15.24.24 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 21 Sep 2026 15:24:25 -0700 (PDT) Date: Mon, 21 Sep 2026 15:24:22 -0700 From: Jonathan Cameron To: "Aneesh Kumar K.V (Arm)" Cc: linux-coco@lists.linux.dev, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Jason Gunthorpe , Catalin Marinas , Greg KH , Jeremy Linton , Jonathan Cameron , Lorenzo Pieralisi , Mark Rutland , Sudeep Holla , Will Deacon , Steven Price , Suzuki K Poulose , Andre Przywara , Suzuki K Poulose Subject: Re: [PATCH v12 4/7] arm64: realm: Move Realm memory encryption ops to RSI code Message-ID: <20260921152422.00006d80@oss.qualcomm.com> In-Reply-To: <20260921053807.354802-5-aneesh.kumar@kernel.org> References: <20260921053807.354802-1-aneesh.kumar@kernel.org> <20260921053807.354802-5-aneesh.kumar@kernel.org> Organization: Qualcomm X-Mailer: Claws Mail 4.4.0 (GTK 3.24.51; x86_64-w64-mingw32) Precedence: bulk X-Mailing-List: linux-coco@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-Proofpoint-ORIG-GUID: xKl_OxJWZUiV_3T41sX72I0PfzeA5ZKt X-Authority-Analysis: v=2.4 cv=PZhqFShd c=1 sm=1 tr=0 ts=6ab1ae9a cx=c_pps a=vVfyC5vLCtgYJKYeQD43oA==:117 a=aNnz9XPx1a4JIXSYt2cE/A==:17 a=kj9zAlcOel0A:10 a=VdqzKS8jKosA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=_K5XuSEh1TEqbUxoQ0s3:22 a=VwQbUJbxAAAA:8 a=OqFrNVoMAAAA:8 a=7CQSdrXTAAAA:8 a=Ikd4Dj_1AAAA:8 a=EUspDBNiAAAA:8 a=O44U9CcMlGbnah6vnssA:9 a=CjuIK1q_8ugA:10 a=rl5im9kqc5Lf4LNbBjHf:22 a=H-multw7KC1Cw6hvqdV4:22 a=a-qgeE7W1pNrGK8U0ZQC:22 X-Proofpoint-GUID: xKl_OxJWZUiV_3T41sX72I0PfzeA5ZKt X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwOTIxMDMyOCBTYWx0ZWRfXzhx58sVLtBZL IMRnMwa8UH7He6qYVzZ9OmA+uas9UwK/98CBOHjjp+QaK10PWeOdepIzliCcd9PkJreLsm2yp+k jj4Gl6OOjpDvDhbj3gVloethtCvLKDFCTq0O+Gha1m3aYAiRPQcLp1MyjRXuJxZqgUIN0YHQaRA tFWIn2mgX74lwG3qZZJj9YUsaYSxUhliFQzYUriPzN4Ae7KlPz6ozrbpXDtI2ndd1WuZiDsi4bj 6IPhyzwSIlf02zE5Wb5mib+ivTm79Ezezb1mWFusoE2B7y8A5Rw37B/Iv5JG3mqFL+UOEgveMwg yzsigbuKhohrzlDLxKA8u2xF2d2CHzGfvgmYOur3TaEmmgqm3cjK9ZpPCz1c4om3wuK9ibhpACT 3R/7NUkEuh55XTaqmKIVfp7NkSUw6EIQ5jajJNwIL/MNf7mtKXPIL+twy+ggd1pxnDcV2iB2wZB 8uC1SPN1Qb3mi3YRnIw== X-Proofpoint-Spam-Info: AW1haW4tMjYwOTIxMDMyOCBTYWx0ZWRfXxb2HohGFM8g5 0QRQYFihWV9cm7vtOCENJYNaqzeyzXiMFLW9JhU27R/nD7T3u7gTkXFBYOOhr+NUUDIwpBa9zHT tLWNi24vQXVwIj0+OmbdDvBbzy7gJ1s= X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1176,Hydra:6.1.134,FMLib:17.12.100.49 definitions=2026-09-21_06,2026-09-21_02,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 clxscore=1015 malwarescore=0 spamscore=0 impostorscore=0 priorityscore=1501 lowpriorityscore=0 suspectscore=0 bulkscore=0 phishscore=0 adultscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2609040000 definitions=main-2609210328 On Mon, 21 Sep 2026 11:08:04 +0530 "Aneesh Kumar K.V (Arm)" wrote: > Realm memory encryption callbacks are CCA-specific. Keep the Realm callback > registration with the RSI initialization code instead of pageattr.c, which > only needs to provide the low-level page-attribute transition helper. > > Export __set_memory_enc_dec() within arm64 so the RSI code can wrap it with > the Realm-specific encrypt/decrypt callbacks and warning policy. > > No functional changes in this patch. > > Reviewed-by: Suzuki K Poulose > Reviewed-by: Catalin Marinas > Reviewed-by: Jason Gunthorpe > Signed-off-by: Aneesh Kumar K.V (Arm) Mostly for completeness and so I don't read it in a possible v13. Reviewed-by: Jonathan Cameron