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[175.34.8.244]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-2df9142b00dsm33448475ad.49.2026.09.27.18.28.49 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Sun, 27 Sep 2026 18:28:55 -0700 (PDT) Message-ID: <699c086a-afb1-4738-bddf-54e98b8a3c34@redhat.com> Date: Mon, 28 Sep 2026 11:28:48 +1000 Precedence: bulk X-Mailing-List: linux-coco@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v19 17/20] KVM: arm64: CCA: WARN on injected undef exceptions To: Suzuki K Poulose , kvm@vger.kernel.org, kvmarm@lists.linux.dev Cc: 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, 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 References: <20260920212845.707-1-suzuki.poulose@arm.com> <20260920212845.707-18-suzuki.poulose@arm.com> From: Gavin Shan In-Reply-To: <20260920212845.707-18-suzuki.poulose@arm.com> X-Mimecast-Spam-Score: 0 X-Mimecast-MFC-PROC-ID: 1Asl-GXhqBhYwMyUDiZC72flJXdWNVEl7tOu2pLU87s_1790558937 X-Mimecast-Originator: redhat.com Content-Language: en-US Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit On 9/21/26 7:28 AM, 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 > --- > Changes since v15: > * Switch to KVM_BUG() to mark the VM as bugged as well. > Changes since v6: > * if (x) WARN(1, ...) makes no sense, just WARN(x, ...)! > --- > arch/arm64/kvm/inject_fault.c | 1 + > 1 file changed, 1 insertion(+) > Reviewed-by: Gavin Shan