On 2021-04-04 18:04, Jarkko Sakkinen wrote: > On Fri, Apr 02, 2021 at 08:31:19PM +0200, Jethro Beekman wrote: >> On 2021-04-02 17:53, Dave Hansen wrote: >>> On 4/2/21 1:38 AM, Jethro Beekman wrote: >>>>> So, we're talking here about pages that have been EEADDED, but for >>>>> which we do not want to include the entire contents of the page? >>>>> Do these contents always include the beginning of the page, or can >>>>> the holes be anywhere? >>>> Holes can be anywhere, and EEXTEND calls need not be sequential in >>>> memory address or even relate to the most recently EADDed page. >>> >>> I think you're referring to the SGX architecture itself here. The >>> architecture permits this, right? >> >> Yes. >> >>> But, why would an enclave loader application ever do this? >> >> e.g. to save space >> >>> Is this something we want to support in Linux? >> >> Why not? Is there a good reason to not fully support this part of the CPU architecture? > > Yes, in generic sense :-) > > If one would disagree, that would be same as saying that everything should > execute in ring-0 because that only gives "full support". How is that the same? Please make an effort to reasonably interpret what I'm saying. -- Jethro Beekman | Fortanix
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