Re: [PATCH v26 10/22] x86/sgx: Linux Enclave Driver

[Jarkko Sakkinen]

On Sat, Feb 15, 2020 at 09:32:34AM +0200, Jarkko Sakkinen wrote:
> On Thu, Feb 13, 2020 at 02:59:52PM +0100, Jethro Beekman wrote:
> > Besides only partially measuring a page, there are some other fringe
> > cases that are technically possible, although I haven't seen any
> > toolchains that do that. These include not interleaving EADD and
> > EEXTEND, not using logical ordering for the EEXTENDs, and call EEXTEND
> > multiple times on the same chunk. Maximum interoperability would
> > require supporting any EADD/EEXTEND sequence.
> 
> The reason why EEXTEND deals with chunks is nothing to do with the
> granularity but just to amortize the algorithm. I did ask about this
> and this is the answer that I got.

I mean asked from people who have been involed in the development of
this CPU feature.

/Jarkko