Re: [PATCH v25 07/21] x86/sgx: Enumerate and track EPC sections

Jarkko Sakkinen
2020-02-06T15:35:27Z

On Wed, Feb 05, 2020 at 11:57:00AM -0800, Sean Christopherson wrote:
> 3. Breaks on-demand paging when running in a VM, e.g. if the VMM chooses
> to allocate a physical EPC page when it's actually accessed by the
> VM. I don't expect this to be a problem any time soon, as all VMMs
> will likely preallocate EPC pages until KVM (or any other hypervisor)
> gains EPC oversusbscription support, which may or may not ever happen.
> But, I'd prefer to simply not have the problem in the first place.

So wouldn't it be better to revisit this when the VM changes are added.

/Jarkko