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The new SGX Asynchronous Exit (AEX) notification mechanism (AEX-notify) allows one enclave to receive a notification in the ERESUME after the enclave exit due to an AEX. EDECCSSA is a new SGX user leaf function (ENCLU[EDECCSSA]) to facilitate the AEX notification handling. Whether the hardware supports to create enclave with AEX-notify support is enumerated via CPUID.(EAX=0x12,ECX=0x1):EAX[10]. The new EDECCSSA user leaf function is enumerated via CPUID.(EAX=0x12,ECX=0x0):EAX[11]. Add support to allow to expose the new SGX AEX-notify feature and the new EDECCSSA user leaf function to KVM guest. Link: https://lore.kernel.org/lkml/166760360549.4906.809756297092548496.tip-bot2@tip-bot2/ Link: https://lore.kernel.org/lkml/166760360934.4906.2427175408052308969.tip-bot2@tip-bot2/ Reviewed-by: Yang Zhong <yang.zhong@linux.intel.com> Signed-off-by: Kai Huang <kai.huang@intel.com> Message-Id: <20221109024834.172705-1-kai.huang@intel.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> |
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