Re: [PATCH v3 2/7] x86/sgx: Add infrastructure to identify SGX EPC pages

[Dave Hansen]

On 7/30/21 9:46 AM, Sean Christopherson wrote:
> Out of curiosity, on multi-socket systems, are EPC sections clustered in a single
> address range, or are they interleaved with regular RAM?  If they're clustered,
> you could track the min/max across all sections to optimize the common case that
> an address isn't in any EPC section.

They're interleaved on the systems that I've seen:

	Socket 0 - RAM
	Socket 0 - EPC
	Socket 1 - RAM
	Socket 1 - EPC

It would probably be pretty expensive in terms of the physical address
remapping resources to cluster them.