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([103.48.69.244]) by smtp.gmail.com with ESMTPSA id d2e1a72fcca58-7398cd1cc3dsm5902926b3a.80.2025.04.01.10.05.51 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 01 Apr 2025 10:05:56 -0700 (PDT) From: Yuvraj Sakshith To: kvmarm@lists.linux.dev, op-tee@lists.trustedfirmware.org, kvm@vger.kernel.org Cc: maz@kernel.org, oliver.upton@linux.dev, joey.gouly@arm.com, suzuki.poulose@arm.com, yuzenghui@huawei.com, catalin.marinas@arm.com, will@kernel.org, jens.wiklander@linaro.org, sumit.garg@kernel.org, mark.rutland@arm.com, lpieralisi@kernel.org, sudeep.holla@arm.com, pbonzini@redhat.com, praan@google.com, Yuvraj Sakshith Subject: [RFC PATCH 1/7] firmware: smccc: Add macros for Trusted OS/App owner check on SMC value Date: Tue, 1 Apr 2025 22:35:21 +0530 Message-ID: <20250401170527.344092-2-yuvraj.kernel@gmail.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20250401170527.344092-1-yuvraj.kernel@gmail.com> References: <20250401170527.344092-1-yuvraj.kernel@gmail.com> Precedence: bulk X-Mailing-List: kvm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 This patch adds ARM_SMCCC_IS_OWNER_TRUSTED_APP() and ARM_SMCCC_IS_OWNER_TRUSTED_OS() macros. These can be used to identify if the SMC is targetted at a Trusted OS/App in the secure world. Signed-off-by: Yuvraj Sakshith --- include/linux/arm-smccc.h | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/include/linux/arm-smccc.h b/include/linux/arm-smccc.h index f19be5754090..da2b4565d5b3 100644 --- a/include/linux/arm-smccc.h +++ b/include/linux/arm-smccc.h @@ -56,6 +56,14 @@ #define ARM_SMCCC_OWNER_TRUSTED_OS 50 #define ARM_SMCCC_OWNER_TRUSTED_OS_END 63 +#define ARM_SMCCC_IS_OWNER_TRUSTED_APP(smc_val) \ + ((ARM_SMCCC_OWNER_NUM(smc_val) >= ARM_SMCCC_OWNER_TRUSTED_APP) && \ + (ARM_SMCCC_OWNER_NUM(smc_val) <= ARM_SMCCC_OWNER_TRUSTED_APP_END)) + +#define ARM_SMCCC_IS_OWNER_TRUSTED_OS(smc_val) \ + ((ARM_SMCCC_OWNER_NUM(smc_val) >= ARM_SMCCC_OWNER_TRUSTED_OS) && \ + (ARM_SMCCC_OWNER_NUM(smc_val) <= ARM_SMCCC_OWNER_TRUSTED_OS_END)) + #define ARM_SMCCC_FUNC_QUERY_CALL_UID 0xff01 #define ARM_SMCCC_QUIRK_NONE 0