[edk2-devel] [PATCH] OvmfPkg: Fix SevMemoryAcceptance memory attributes

[Dionna Glaze via groups.io]

> >
> > This change is made given a request from Ard. The CC capability is not
> > applied to other system memory ranges that probably should also have
> > that capability, given that it's encrypted and accepted. I haven't
> > considered carefully where EFI_MEMORY_CPU_CRYPTO should be added to
> > conventional memory, given the acceptance happens before DXE
> > initializes. Perhaps
> > CoreConvertResourceDescriptorHobAttributesToCapabilities? This is more
> > of a question to Ard and Thomas.
> >
>
> It's not clear to me whether the CC attribute applies to the host or
> the guest. From the guest PoV, there is really no distinction, whereas
> on the host, I could imagine that only CC capable memory can be used
> for handing out to VMs.
>

That's a good point. The UEFI spec language is hard to interpret here.
Min or Jiewen, do you have more context on the EFI_MEMORY_CPU_CRYPTO
attribute?


-- 
-Dionna Glaze, PhD (she/her)


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