rfc: Add Unaccepted Hot-Plug Memory Hint attribute#41
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Propose EFI_MEMORY_UHP and EFI_RESOURCE_ATTRIBUTE_UNACCEPTED_HOT_PLUG so firmware can mark unaccepted memory belonging to a memory hot-plug window, distinct from present-but-unvalidated unaccepted memory. This lets a confidential-computing guest OS defer acceptance of that window until the memory is actually hot-added, with an AMD SEV-SNP reference implementation on OVMF/QEMU. Signed-off-by: Pratik R. Sampat <prsampat@amd.com>
pratiksampat
requested review from
a team,
makubacki and
mdkinney
as code owners
July 15, 2026 16:44
Author
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Link to edk2 Github issue: tianocore/edk2#12810 |
This was referenced Jul 15, 2026
Contributor
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@pratiksampat imo, this does not need an RFC. I think the change is scoped enough and doesn't raise fundamental edk2 questions, just PI/UEFI spec questions that we can discuss this fully in the Code First PR. |
Author
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Sure thing, we can definitely close this out and continue the discussion over edk2's PR. |
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Propose EFI_MEMORY_UHP and EFI_RESOURCE_ATTRIBUTE_UNACCEPTED_HOT_PLUG so firmware can mark unaccepted memory belonging to a memory hot-plug window, distinct from present-but-unvalidated unaccepted memory. This lets a confidential-computing guest OS defer acceptance of that window until the memory is actually hot-added, with an AMD SEV-SNP reference implementation on OVMF/QEMU.