From 7b502832ee69274ce88faa5d64a339f8760b50bf Mon Sep 17 00:00:00 2001 From: Elena Reshetova Date: Thu, 16 Oct 2025 16:11:06 +0300 Subject: [PATCH] x86/sgx: Define error codes for use by ENCLS[EUPDATESVN] Add error codes for ENCLS[EUPDATESVN], then SGX CPUSVN update process can know the execution state of EUPDATESVN and notify userspace. EUPDATESVN will be called when no active SGX users is guaranteed. Only add the error codes that can legally happen. E.g., it could also fail due to "SGX not ready" when there's SGX users but it wouldn't happen in this implementation. Signed-off-by: Elena Reshetova Signed-off-by: Dave Hansen Reviewed-by: Kai Huang Reviewed-by: Jarkko Sakkinen Tested-by: Nataliia Bondarevska --- arch/x86/include/asm/sgx.h | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/arch/x86/include/asm/sgx.h b/arch/x86/include/asm/sgx.h index 6a0069761508b..73348cf4fd78a 100644 --- a/arch/x86/include/asm/sgx.h +++ b/arch/x86/include/asm/sgx.h @@ -73,6 +73,10 @@ enum sgx_encls_function { * public key does not match IA32_SGXLEPUBKEYHASH. * %SGX_PAGE_NOT_MODIFIABLE: The EPC page cannot be modified because it * is in the PENDING or MODIFIED state. + * %SGX_INSUFFICIENT_ENTROPY: Insufficient entropy in RNG. + * %SGX_NO_UPDATE: EUPDATESVN could not update the CPUSVN because the + * current SVN was not newer than CPUSVN. This is the most + * common error code returned by EUPDATESVN. * %SGX_UNMASKED_EVENT: An unmasked event, e.g. INTR, was received */ enum sgx_return_code { @@ -81,6 +85,8 @@ enum sgx_return_code { SGX_CHILD_PRESENT = 13, SGX_INVALID_EINITTOKEN = 16, SGX_PAGE_NOT_MODIFIABLE = 20, + SGX_INSUFFICIENT_ENTROPY = 29, + SGX_NO_UPDATE = 31, SGX_UNMASKED_EVENT = 128, }; -- 2.47.3