[edk2-devel] [PATCH v1 0/2] SEV Page Encryption Bitmap support for OVMF.

[Ashish Kalra]

From: Ashish Kalra <ashish.kalra at amd.com>

By default all the SEV guest memory regions are considered encrypted,
if a guest changes the encryption attribute of the page (e.g mark a
page as decrypted) then notify hypervisor. Hypervisor will need to
track the unencrypted pages. The information will be used during
guest live migration, guest page migration and guest debugging.

The patch-set also adds a new SEV and SEV-ES hypercall abstraction
library to support SEV Page encryption/decryption status hypercalls
for SEV and SEV-ES guests.

BaseMemEncryptSevLib invokes hypercalls via this new hypercall library.

A branch containing these patches is available here:
https://github.com/ashkalra/edk2/tree/sev_page_encryption_bitmap_v1

Ashish Kalra (1):
  OvmfPkg/MemEncryptHypercallLib: add library to support SEV hypercalls.

Brijesh Singh (1):
  OvmfPkg/BaseMemEncryptLib: Support to issue unencrypted hypercall

 OvmfPkg/OvmfPkgX64.dsc                        |   1 +
 .../BaseMemEncryptSevLib.inf                  |   1 +
 .../MemEncryptHypercallLib.inf                |  39 +++++++
 .../Include/Library/MemEncryptHypercallLib.h  |  37 ++++++
 .../BaseMemEncryptSevLib/X64/VirtualMemory.c  |  18 +++
 .../MemEncryptHypercallLib.c                  | 105 ++++++++++++++++++
 .../X64/AsmHelperStub.nasm                    |  39 +++++++
 7 files changed, 240 insertions(+)
 create mode 100644 OvmfPkg/Library/MemEncryptHypercallLib/MemEncryptHypercallLib.inf
 create mode 100644 OvmfPkg/Include/Library/MemEncryptHypercallLib.h
 create mode 100644 OvmfPkg/Library/MemEncryptHypercallLib/MemEncryptHypercallLib.c
 create mode 100644 OvmfPkg/Library/MemEncryptHypercallLib/X64/AsmHelperStub.nasm

-- 
2.17.1



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