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
Signed-off-by: Kai Huang
---
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 22b681ca37dd..51f212cef50d 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,
base-commit: 466e81ff12013d026e2d0154266fce82bce2ee9b
--
2.38.1