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[199.106.103.254]) by smtp.gmail.com with ESMTPSA id 5a478bee46e88-33e96e48e3esm1320134eec.26.2026.09.22.15.54.41 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 22 Sep 2026 15:54:43 -0700 (PDT) Date: Tue, 22 Sep 2026 15:54:38 -0700 From: Jonathan Cameron To: Suzuki K Poulose Cc: kvm@vger.kernel.org, kvmarm@lists.linux.dev, maz@kernel.org, will@kernel.org, catalin.marinas@arm.com, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, steven.price@arm.com, aneesh.kumar@kernel.org, oupton@kernel.org, gshan@redhat.com, joey.gouly@arm.com, tabba@google.com, yuzenghui@huawei.com, linux-coco@lists.linux.dev, gankulkarni@os.amperecomputing.com, sdonthineni@nvidia.com, alpergun@google.com, fj0570is@fujitsu.com, WeiLin.Chang@arm.com, lpieralisi@kernel.org, enju.kohei@fujitsu.com Subject: Re: [PATCH v19 17/20] KVM: arm64: CCA: WARN on injected undef exceptions Message-ID: <20260922155438.00000f3d@oss.qualcomm.com> In-Reply-To: <20260920212845.707-18-suzuki.poulose@arm.com> References: <20260920212845.707-1-suzuki.poulose@arm.com> <20260920212845.707-18-suzuki.poulose@arm.com> 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: sCXXdOBQ_gKusqGNSLF7YGCg4247ykNy X-Proofpoint-Spam-Info: AW1haW4tMjYwOTIyMDMwNCBTYWx0ZWRfX6iO+ICT7OrJ2 eXBsrlb7HHmp8RWdRtKMKlEz72GnErsjJLc3++lj9Hwi91BszNHX8vgI5W0BsP5sI0SHuKA5DLe ZXH9QyknBBRUvgLOZAK4F6mx3JnB9OY= X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwOTIyMDMwNCBTYWx0ZWRfX0NhTTDX8hCEC XqDk0drXLNwDhEa7OaQXr3rnFQrXH3XajayzNGLMzqI7fIGcz04q4bG73a414ecWuD7jYBGF807 4aJxsyftE5P4Z6p0kKDjp7Sb/oGheIvNHFQHCtC9PWD46qhLfWJ5OS1VarN7A8em2vIpsAnvxG7 tjEBAOslrXCFk8YNyUhnu/t8rAAR7SwmFRZkuK8ANYfEyas6KrtilsCm1DgO0R5tpeBtBb7JI5H R+wzRCxtjKfrwDMWNys2XaI4Igy5GfFNHpeNh7OUjB9fGqNumdlt6YpABeVGTD0BEiBrRKTpLhA sgzETVkPjJucsE7govGEbqbvd/2yKffG0SCd9lphLn89xfP8wjV5Nc6IrOf7JnjAwIGnK9A+iUE HzqVgIPaMYc/u9h4LY6NLGj1l+H3UMEhSm6sAA4SJz6gGdJfrUiXa657AjF7NdQ2fuJUe4ZFL76 mMfDEfd1ZWsRZbAMVcw== X-Authority-Analysis: v=2.4 cv=N828hG9B c=1 sm=1 tr=0 ts=6ab30734 cx=c_pps a=Uww141gWH0fZj/3QKPojxA==:117 a=JYp8KDb2vCoCEuGobkYCKw==:17 a=kj9zAlcOel0A:10 a=VdqzKS8jKosA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=DJpcGTmdVt4CTyJn9g5Z:22 a=7CQSdrXTAAAA:8 a=EUspDBNiAAAA:8 a=DI-nzRUvp28q1R9r8mgA:9 a=CjuIK1q_8ugA:10 a=PxkB5W3o20Ba91AHUih5:22 a=a-qgeE7W1pNrGK8U0ZQC:22 X-Proofpoint-GUID: sCXXdOBQ_gKusqGNSLF7YGCg4247ykNy 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=2026-09-22_03,2026-09-21_02,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 clxscore=1015 malwarescore=0 adultscore=0 spamscore=0 impostorscore=0 bulkscore=0 phishscore=0 lowpriorityscore=0 suspectscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2609040000 definitions=main-2609220304 On Sun, 20 Sep 2026 22:28:42 +0100 Suzuki K Poulose wrote: > From: Steven Price > > The RMM doesn't allow injection of a undefined exception into a realm > guest. Add a WARN to catch if this ever happens. > > Signed-off-by: Steven Price Reviewed-by: Jonathan Cameron