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

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