From: Kai Huang <[email protected]> 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 <[email protected]> Signed-off-by: Kai Huang <[email protected]> Message-Id: <[email protected]> Signed-off-by: Paolo Bonzini <[email protected]> --- target/i386/cpu.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/target/i386/cpu.c b/target/i386/cpu.c index ae502f0bfeab..6c742c891022 100644 --- a/target/i386/cpu.c +++ b/target/i386/cpu.c @@ -1233,7 +1233,7 @@ FeatureWordInfo feature_word_info[FEATURE_WORDS] = { .feat_names = { "sgx1", "sgx2", NULL, NULL, NULL, NULL, NULL, NULL, - NULL, NULL, NULL, NULL, + NULL, NULL, NULL, "sgx-edeccssa", NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, @@ -1273,7 +1273,7 @@ FeatureWordInfo feature_word_info[FEATURE_WORDS] = { .feat_names = { NULL, "sgx-debug", "sgx-mode64", NULL, "sgx-provisionkey", "sgx-tokenkey", NULL, "sgx-kss", - NULL, NULL, NULL, NULL, + NULL, NULL, "sgx-aex-notify", NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, -- 2.38.1
