BZ: https://bugzilla.tianocore.org/show_bug.cgi?id=2198
A hypervisor is not allowed to update an SEV-ES guest's register state,
so when booting an SEV-ES guest AP, the hypervisor is not allowed to
set the RIP to the guest requested value. Instead an SEV-ES AP must be
re-directed from within the guest to the actual requested staring location
as specified in the INIT-SIPI-SIPI sequence.
Use the SEV-ES work area for the reset vector code that contains support
to jump to the desired RIP location after having been started. This is
required for only the very first AP reset.
This new OVMF source file, ResetVectorVtf0.asm, is used in place of the
original file through the use of the include path order set in
OvmfPkg/ResetVector/ResetVector.inf under "[BuildOptions]".
Cc: Jordan Justen <jordan.l.justen@intel.com>
Cc: Laszlo Ersek <lersek@redhat.com>
Cc: Ard Biesheuvel <ard.biesheuvel@arm.com>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
Signed-off-by: Tom Lendacky <thomas.lendacky@amd.com>
Regression-tested-by: Laszlo Ersek <lersek@redhat.com>
In some environments, the accessed bit should be set to allow the
global descriptor table (GDT) to reside in unmodifiable flash
memory.
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@9675 6f19259b-4bc3-4df7-8a09-765794883524
Previously it was:
ESI/RSI - SEC Core entry point
EDI/RDI - PEI Core entry point
EBP/RBP - Start of BFV
Now it is:
RAX/EAX Initial value of the EAX register
(BIST: Built-in Self Test)
DI 'BP': boot-strap processor, or
'AP': application processor
RBP/EBP Address of Boot Firmware Volume (BFV)
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@9571 6f19259b-4bc3-4df7-8a09-765794883524
