Hi Jarkko, On 4/14/2022 4:21 AM, Jarkko Sakkinen wrote: > On Wed, 2022-04-13 at 14:10 -0700, Reinette Chatre wrote: >> 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@xxxxxxxxx> >> --- >> No changes since V3. >> >> Changes since V2: >> - Remove references to ioctl() to relax permissions and update to reflect >> function renaming sgx_ioc_enclave_restrict_perm() -> >> sgx_ioc_enclave_restrict_permissions(). >> - Rename sgx_ioc_enclave_modt -> sgx_ioc_enclave_modify_type >> >> Changes since V1: >> - New patch. >> >> Documentation/x86/sgx.rst | 15 +++++++++++++++ >> 1 file changed, 15 insertions(+) >> >> diff --git a/Documentation/x86/sgx.rst b/Documentation/x86/sgx.rst >> index 265568a9292c..10287c558485 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_type >> + sgx_ioc_enclave_remove_pages >> + >> Enclave vDSO >> ------------ >> > > Reviewed-by: Jarkko Sakkinen <jarkko@xxxxxxxxxx> > Thank you. Reinette
