I don’t think MdePkg is the right place. MdePkg only includes the approved industry standard.
As Gerd and I discussed before, this protocol should be in OvmfPkg. Please move to https://github.com/tianocore/edk2/tree/master/OvmfPkg/Include/Protocol Thank you Yao, Jiewen > -----Original Message----- > From: Dionna Glaze <dionnagl...@google.com> > Sent: Thursday, January 26, 2023 8:57 AM > To: devel@edk2.groups.io > Cc: Dionna Glaze <dionnagl...@google.com>; Gerd Hoffmann > <kra...@redhat.com>; James Bottomley <j...@linux.ibm.com>; Yao, Jiewen > <jiewen....@intel.com>; Tom Lendacky <thomas.lenda...@amd.com>; Ard > Biesheuvel <a...@kernel.org>; Xu, Min M <min.m...@intel.com>; Andrew Fish > <af...@apple.com>; Kinney, Michael D <michael.d.kin...@intel.com> > Subject: [PATCH v10 2/4] MdePkg: Introduce the SevMemoryAcceptance > protocol > > The default behavior for unaccepted memory in SEV-SNP is to accept all > memory when ExitBootServices is called. An OS loader can use this > protocol to disable this behavior to assume responsibility for memory > acceptance and to affirm that the OS can handle the unaccepted memory > type. > > This is a candidate for standardization. > > Cc: Gerd Hoffmann <kra...@redhat.com> > Cc: James Bottomley <j...@linux.ibm.com> > Cc: Jiewen Yao <jiewen....@intel.com> > Cc: Tom Lendacky <thomas.lenda...@amd.com> > Cc: Ard Biesheuvel <a...@kernel.org> > Cc: "Min M. Xu" <min.m...@intel.com> > Cc: Andrew Fish <af...@apple.com> > Cc: "Michael D. Kinney" <michael.d.kin...@intel.com> > > Signed-off-by: Dionna Glaze <dionnagl...@google.com> > --- > MdePkg/Include/Protocol/Bz3987SevMemoryAcceptance.h | 44 > ++++++++++++++++++++ > MdePkg/MdePkg.dec | 3 ++ > 2 files changed, 47 insertions(+) > > diff --git a/MdePkg/Include/Protocol/Bz3987SevMemoryAcceptance.h > b/MdePkg/Include/Protocol/Bz3987SevMemoryAcceptance.h > new file mode 100644 > index 0000000000..c3691e1c93 > --- /dev/null > +++ b/MdePkg/Include/Protocol/Bz3987SevMemoryAcceptance.h > @@ -0,0 +1,44 @@ > +/** @file > + The file provides the protocol that disables the behavior that all memory > + gets accepted at ExitBootServices(). This protocol is only meant to be > called > + by the OS loader, and not EDK2 itself. The SEV naming is due to the > coincidence > + that only SEV-SNP needs this protocol, since SEV-SNP kernel support > released > + before kernel support for unaccepted memory. The technology enablement > thus > + does not strictly imply support for the unaccepted memory type. > + > + Copyright (c) 2023, Google LLC. All rights reserved.<BR> > + SPDX-License-Identifier: BSD-2-Clause-Patent > +**/ > + > +#ifndef SEV_MEMORY_ACCEPTANCE_H_ > +#define SEV_MEMORY_ACCEPTANCE_H_ > + > +#define BZ3987_SEV_MEMORY_ACCEPTANCE_PROTOCOL_GUID \ > + {0xc5a010fe, \ > + 0x38a7, \ > + 0x4531, \ > + {0x8a, 0x4a, 0x05, 0x00, 0xd2, 0xfd, 0x16, 0x49}} > + > +typedef struct _BZ3987_SEV_MEMORY_ACCEPTANCE_PROTOCOL \ > + BZ3987_SEV_MEMORY_ACCEPTANCE_PROTOCOL; > + > +/** > + @param This A pointer to a BZ3987_SEV_MEMORY_ACCEPTANCE_PROTOCOL. > +**/ > +typedef > + EFI_STATUS > +(EFIAPI *BZ3987_SEV_ALLOW_UNACCEPTED_MEMORY)( > + IN BZ3987_SEV_MEMORY_ACCEPTANCE_PROTOCOL *This > + ); > + > +/// > +/// The BZ3987_SEV_MEMORY_ACCEPTANCE_PROTOCOL allows the OS loader > to > +/// indicate to EDK2 that ExitBootServices should not accept all memory. > +/// > +struct _BZ3987_SEV_MEMORY_ACCEPTANCE_PROTOCOL { > + BZ3987_SEV_ALLOW_UNACCEPTED_MEMORY AllowUnacceptedMemory; > +}; > + > +extern EFI_GUID gBz3987SevMemoryAcceptanceProtocolGuid; > + > +#endif > diff --git a/MdePkg/MdePkg.dec b/MdePkg/MdePkg.dec > index 3d08f20d15..b82d6e46a4 100644 > --- a/MdePkg/MdePkg.dec > +++ b/MdePkg/MdePkg.dec > @@ -1031,6 +1031,9 @@ > gEfiPeiDelayedDispatchPpiGuid = { 0x869c711d, 0x649c, 0x44fe, { 0x8b, > 0x9e, > 0x2c, 0xbb, 0x29, 0x11, 0xc3, 0xe6 }} > > [Protocols] > + ## Include/Protocol/Bz3987SevMemoryAcceptance.h > + gBz3987SevMemoryAcceptanceProtocolGuid = { 0xc5a010fe, 0x38a7, 0x4531, > {0x8a, 0x4a, 0x05, 0x00, 0xd2, 0xfd, 0x16, 0x49 }} > + > ## Include/Protocol/MemoryAccept.h > gEdkiiMemoryAcceptProtocolGuid = { 0x38c74800, 0x5590, 0x4db4, { 0xa0, > 0xf3, 0x67, 0x5d, 0x9b, 0x8e, 0x80, 0x26 }} > > -- > 2.39.1.456.gfc5497dd1b-goog -=-=-=-=-=-=-=-=-=-=-=- Groups.io Links: You receive all messages sent to this group. View/Reply Online (#99054): https://edk2.groups.io/g/devel/message/99054 Mute This Topic: https://groups.io/mt/96534753/21656 Group Owner: devel+ow...@edk2.groups.io Unsubscribe: https://edk2.groups.io/g/devel/unsub [arch...@mail-archive.com] -=-=-=-=-=-=-=-=-=-=-=-
