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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) MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwOTIyMDMwNCBTYWx0ZWRfX1v3FWCPtK9t5 VEAO79bxUx3FLlTxLDEzyeJ3mJ0HQoNzpcSAmIF2jvSV1c7OvjhKrJs/REL/8d8b9HOgoeLtMDh xuWY9LIt2UJ0+UWjwUVjKTgBG/AcvduuZAyiGFH4kblIlqGXwt2DrCNxQEDoR9o6pHPrBkCqoYb 94bWBT1/o49kJFdqsuLmE9olh15noPjOOpL4PwfmbC8X6DtDYd0RWnM/CrxSfOz3nDsQ0V+5/Dw zeIAuaNHpq57++x1RsGF3bEJLatSrg4YCf76yPW+ZoH1Ctp8/pi+Pk0u5h+2DAH3W9z8tAxzvDV kasQdKgrjXIFM97QtgmBnoBcBspmL2dBFUOn4QcnZYK13ivO5a4q+Ib61JtA8GDkWKwZFNGH3Tg VYgj40KVMxLPSD3r3t1IjwOVsuEXphRsd6D7RnJHgl1Wq7BlSM+0JM8tMtzoEbSOJv6NoUVl/aa +kLUhrL0T1EYNFYmsNQ== X-Authority-Analysis: v=2.4 cv=feI4WEQF c=1 sm=1 tr=0 ts=6ab30734 cx=c_pps a=PfFC4Oe2JQzmKTvty2cRDw==:117 a=JYp8KDb2vCoCEuGobkYCKw==:17 a=kj9zAlcOel0A:10 a=VdqzKS8jKosA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=yOCtJkima9RkubShWh1s:22 a=7CQSdrXTAAAA:8 a=EUspDBNiAAAA:8 a=DI-nzRUvp28q1R9r8mgA:9 a=CjuIK1q_8ugA:10 a=6Ab_bkdmUrQuMsNx7PHu:22 a=a-qgeE7W1pNrGK8U0ZQC:22 X-Proofpoint-GUID: lTCtXGdqC1XceO00qoVzxgmGYpC8_rRn X-Proofpoint-ORIG-GUID: lTCtXGdqC1XceO00qoVzxgmGYpC8_rRn X-Proofpoint-Spam-Info: AW1haW4tMjYwOTIyMDMwNCBTYWx0ZWRfXxuXhwhG6zfje wmRu91r46m1RHa75rBGNSl/sEebn0iofZrpuSoJrbvp2Zra7HVVHpPdzqE384YDUNGn+1n4DNSi koPjnznzx3HTduU3V8wK2Or3nVUO15A= 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 bulkscore=0 phishscore=0 spamscore=0 suspectscore=0 lowpriorityscore=0 clxscore=1015 impostorscore=0 malwarescore=0 priorityscore=1501 adultscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2609040000 definitions=main-2609220304 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.9.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260922_155445_924894_A72541C1 X-CRM114-Status: GOOD ( 12.04 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org 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