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| author | Reinette Chatre <reinette.chatre@intel.com> | 2022-05-10 21:08:57 +0300 |
|---|---|---|
| committer | Dave Hansen <dave.hansen@linux.intel.com> | 2022-07-07 20:13:03 +0300 |
| commit | 629b5155d01b699e50ee63a3973402c64d0ac5d6 (patch) | |
| tree | 630c041c4132897a2ac9282ea21816cc204186c3 /Documentation/x86 | |
| parent | a0506b3b063641f0a05b2a4399442a38aad22291 (diff) | |
| download | linux-629b5155d01b699e50ee63a3973402c64d0ac5d6.tar.xz | |
Documentation/x86: Introduce enclave runtime management section
Enclave runtime management is introduced following the pattern
of the section describing enclave building. Provide a brief
summary of enclave runtime management, pointing to the functions
implementing the ioctl()s that will contain details within their
kernel-doc.
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com>
Reviewed-by: Jarkko Sakkinen <jarkko@kernel.org>
Link: https://lkml.kernel.org/r/1da0b9a938b28e68e6870ebd5291490d680e700b.1652137848.git.reinette.chatre@intel.com
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 ------------ |