Arvind Ram Prakash 8ae6b1ad6c fix(security): apply SMCCC_ARCH_WORKAROUND_4 to affected cpus ... This patch implements SMCCC_ARCH_WORKAROUND_4 and allows discovery through SMCCC_ARCH_FEATURES. This mechanism is enabled if CVE_2024_7881 [1] is enabled by the platform. If CVE_2024_7881 mitigation is implemented, the discovery call returns 0, if not -1 (SMC_ARCH_CALL_NOT_SUPPORTED). For more information about SMCCC_ARCH_WORKAROUND_4 [2], please refer to the SMCCC Specification reference provided below. [1]: https://developer.arm.com/Arm%20Security%20Center/Arm%20CPU%20Vulnerability%20CVE-2024-7881 [2]: https://developer.arm.com/documentation/den0028/latest Signed-off-by: Arvind Ram Prakash <arvind.ramprakash@arm.com> Change-Id: I1b1ffaa1f806f07472fd79d5525f81764d99bc79		2025-01-30 16:45:35 -06:00
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arm_arch_svc_setup.c	fix(security): apply SMCCC_ARCH_WORKAROUND_4 to affected cpus	2025-01-30 16:45:35 -06:00