On Fri, Mar 21, 2025 at 02:34:42PM +0200, Elena Reshetova wrote:
> Add error codes for ENCLS[EUPDATESVN], then SGX CPUSVN update
> process can know the execution state of EUPDATESVN.
> 

Enumerate the error codes. Do we need all of the three added?

> Code is from previous submission in 
> https://lore.kernel.org/all/20220520103904.1216-1-cathy.zh...@intel.com/T/#m1becf67078dc8c59d454e2e6c6d67ca64db341a4
"Link: 
https://lore.kernel.org/all/20220520103904.1216-1-cathy.zh...@intel.com/T/#m1becf67078dc8c59d454e2e6c6d67ca64db341a4";

> 
> Co-developed-by: Cathy Zhang <cathy.zh...@intel.com>
> Signed-off-by: Cathy Zhang <cathy.zh...@intel.com>

> Co-developed-by: Elena Reshetova <elena.reshet...@intel.com>
Should be removed:
https://docs.kernel.org/process/submitting-patches.html#when-to-use-acked-by-cc-and-co-developed-by

> Signed-off-by: Elena Reshetova <elena.reshet...@intel.com>
> ---
>  arch/x86/include/asm/sgx.h | 8 ++++++++
>  1 file changed, 8 insertions(+)
> 
> diff --git a/arch/x86/include/asm/sgx.h b/arch/x86/include/asm/sgx.h
> index 6a0069761508..8ba39bbf4e91 100644
> --- a/arch/x86/include/asm/sgx.h
> +++ b/arch/x86/include/asm/sgx.h
> @@ -73,6 +73,11 @@ 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_EPC_NOT_READY:               EPC is not ready for SVN update.
> + * %SGX_NO_UPDATE:           EUPDATESVN was successful, but CPUSVN was not
> + *                           updated because current SVN was not newer than
> + *                           CPUSVN.
>   * %SGX_UNMASKED_EVENT:              An unmasked event, e.g. INTR, was 
> received
>   */
>  enum sgx_return_code {
> @@ -81,6 +86,9 @@ enum sgx_return_code {
>       SGX_CHILD_PRESENT               = 13,
>       SGX_INVALID_EINITTOKEN          = 16,
>       SGX_PAGE_NOT_MODIFIABLE         = 20,
> +     SGX_INSUFFICIENT_ENTROPY        = 29,
> +     SGX_EPC_NOT_READY               = 30,
>  +    SGX_NO_UPDATE                   = 31,



>       SGX_UNMASKED_EVENT              = 128,
>  };
>  
> -- 
> 2.45.2
> 
> 

BR, Jarkko

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