Messages in this thread | | | Date | Fri, 3 Dec 2021 10:49:44 -0800 | Subject | Re: [PATCH 10/25] x86/sgx: Support enclave page permission changes | From | Reinette Chatre <> |
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Hi Dave,
On 12/3/2021 10:14 AM, Dave Hansen wrote: > On 12/1/21 11:23 AM, Reinette Chatre wrote: >> Enclave page permission changes need to be approached with care and >> for this reason this initial support is to allow enclave page >> permission changes _only_ if the new permissions are the same or >> more restrictive that the permissions originally vetted at the time the >> pages were added to the enclave. Support for extending enclave page >> permissions beyond what was originally vetted is deferred. > > It's probably worth adding a few examples here: > > * RWX => RW => RX => RW => R => RWX > * RW => R => RW > * RX => R => RX >
Indeed - that would make the implications of this change clear.
Will do. Thank you very much.
Reinette
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