Re: [RFC PATCH v3 14/27] x86/sgx: Add helpers to expose ECREATE and EINIT to KVM

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On Thu, Feb 04, 2021, Kai Huang wrote:
> Hi Sean,
> 
> Do you think is it reasonable to move this patch to KVM? sgx_virt_ecreate() can be
> merged to handle ECREATE patch, and sgx_virt_einit() can be merged to handle EINIT
> patch. W/o the context of that two patches, it doesn't makes too much sense to have
> them standalone under x86 here I think. And nobody except KVM will use them.

Short answer, no.  To do that, nearly all of arch/x86/kernel/cpu/sgx/encls.h
would need to be exposed via asm/sgx.h.  The macro insanity and fault/error code
shenanigans really should be kept as private crud in SGX.  That's the primary
motivation for putting these in sgx/virt.c instead of KVM, my changelog just did
a really poor job of explaining that.



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