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SubjectRe: [PATCH 10/25] x86/sgx: Support enclave page permission changes
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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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