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* [PATCH 0/3] Add safe unaccepted memory behavior
@ 2022-09-22 20:50 Dionna Glaze
  2022-09-22 20:50 ` [PATCH 1/3] OvmfPkg: Realize EfiMemoryAcceptProtocol in AmdSevDxe Dionna Glaze
                   ` (3 more replies)
  0 siblings, 4 replies; 9+ messages in thread
From: Dionna Glaze @ 2022-09-22 20:50 UTC (permalink / raw)
  To: devel
  Cc: Dionna Glaze, Ard Biescheuvel, Min M. Xu, Gerd Hoffmann,
	James Bottomley, Tom Lendacky, Jiewen Yao, Erdem Aktas

These three patches build on the lazy-accept patch series

"Introduce Lazy-accept for Tdx guest"

by adding SEV-SNP support for the MemoryAccept protocol, and
importantly making eager memory acceptance the default behavior.

For unaccepted memory to be enabled, we must know that the booted image
supports the unaccepted memory type. We add a trivial protocol that sets
a dynamic Pcd to true when called in order for the booted image to
signal its support for unaccepted memory. This does not need to be an
OsIndications bit because it does not need to be persisted.

We use the Pcd to disable a new ExitBootServices notification that
accepts all unaccepted memory, removes the unaccepted memory entries in
the memory space map, and then add the same memory ranges back as
conventional memory.

All images that support unaccepted memory must now locate and call this
new ENABLE_UNACCEPTED_MEMORY_PROTOCOL.

Cc: Ard Biescheuvel <ardb@kernel.org>
Cc: "Min M. Xu" <min.m.xu@intel.org>
Cc: Gerd Hoffmann <kraxel@redhat.com>
Cc: James Bottomley <jejb@linux.ibm.com>
Cc: Tom Lendacky <Thomas.Lendacky@amd.com>
Cc: Jiewen Yao <jiewen.yao@intel.com>
Cc: Erdem Aktas <erdemaktas@google.com>

Signed-off-by: Dionna Glaze <dionnaglaze@google.com>

Dionna Glaze (3):
  OvmfPkg: Realize EfiMemoryAcceptProtocol in AmdSevDxe
  DxeMain accepts all memory at EBS if needed
  MdeModulePkg: add EnableUnacceptedMemoryProtocol

 MdeModulePkg/Core/Dxe/DxeMain.h               |  32 +++++
 MdeModulePkg/Core/Dxe/DxeMain.inf             |   3 +
 MdeModulePkg/Core/Dxe/DxeMain/DxeMain.c       |  19 ++-
 MdeModulePkg/Core/Dxe/Mem/Page.c              | 122 ++++++++++++++++++
 MdeModulePkg/MdeModulePkg.dec                 |   9 ++
 MdeModulePkg/MdeModulePkg.uni                 |   6 +
 OvmfPkg/AmdSev/AmdSevX64.dsc                  |   1 +
 OvmfPkg/AmdSevDxe/AmdSevDxe.c                 |  27 ++++
 OvmfPkg/AmdSevDxe/AmdSevDxe.inf               |   3 +
 OvmfPkg/Bhyve/BhyveX64.dsc                    |   2 +
 OvmfPkg/CloudHv/CloudHvX64.dsc                |   2 +
 OvmfPkg/Include/Library/MemEncryptSevLib.h    |  14 ++
 OvmfPkg/IntelTdx/IntelTdxX64.dsc              |   2 +
 .../Ia32/MemEncryptSevLib.c                   |  17 +++
 .../X64/DxeSnpSystemRamValidate.c             |  35 +++++
 .../X64/PeiSnpSystemRamValidate.c             |  17 +++
 .../X64/SecSnpSystemRamValidate.c             |  18 +++
 OvmfPkg/OvmfPkgIa32X64.dsc                    |   2 +
 OvmfPkg/OvmfPkgX64.dsc                        |   2 +
 OvmfPkg/OvmfXen.dsc                           |   2 +
 20 files changed, 334 insertions(+), 1 deletion(-)

-- 
2.37.3.998.g577e59143f-goog


^ permalink raw reply	[flat|nested] 9+ messages in thread

end of thread, other threads:[~2022-09-26  9:36 UTC | newest]

Thread overview: 9+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2022-09-22 20:50 [PATCH 0/3] Add safe unaccepted memory behavior Dionna Glaze
2022-09-22 20:50 ` [PATCH 1/3] OvmfPkg: Realize EfiMemoryAcceptProtocol in AmdSevDxe Dionna Glaze
2022-09-23 17:10   ` Lendacky, Thomas
2022-09-22 20:50 ` [PATCH 2/3] DxeMain accepts all memory at EBS if needed Dionna Glaze
2022-09-22 20:50 ` [PATCH 3/3] MdeModulePkg: add EnableUnacceptedMemoryProtocol Dionna Glaze
2022-09-23 17:19 ` [PATCH 0/3] Add safe unaccepted memory behavior Lendacky, Thomas
2022-09-23 19:34   ` Dionna Glaze
2022-09-23 19:42     ` Lendacky, Thomas
2022-09-26  9:36       ` Gerd Hoffmann

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