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Diffstat (limited to 'Documentation/x86')
| -rw-r--r-- | Documentation/x86/sgx.rst | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/Documentation/x86/sgx.rst b/Documentation/x86/sgx.rst index 265568a9292c..2bcbffacbed5 100644 --- a/Documentation/x86/sgx.rst +++ b/Documentation/x86/sgx.rst @@ -100,6 +100,21 @@ pages and establish enclave page permissions. sgx_ioc_enclave_init sgx_ioc_enclave_provision +Enclave runtime management +-------------------------- + +Systems supporting SGX2 additionally support changes to initialized +enclaves: modifying enclave page permissions and type, and dynamically +adding and removing of enclave pages. When an enclave accesses an address +within its address range that does not have a backing page then a new +regular page will be dynamically added to the enclave. The enclave is +still required to run EACCEPT on the new page before it can be used. + +.. kernel-doc:: arch/x86/kernel/cpu/sgx/ioctl.c + :functions: sgx_ioc_enclave_restrict_permissions + sgx_ioc_enclave_modify_types + sgx_ioc_enclave_remove_pages + Enclave vDSO ------------ |