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| author | Tom Lendacky <thomas.lendacky@amd.com> | 2021-01-07 12:48:17 -0600 |
|---|---|---|
| committer | mergify[bot] <37929162+mergify[bot]@users.noreply.github.com> | 2021-01-07 19:34:39 +0000 |
| commit | 45388d046c3506bd49dca29aed8ec74756e6165c (patch) | |
| tree | ffbfffd7b1b1ac07b8df443d3a77ae81d63ca6ab /OvmfPkg/AmdSevDxe | |
| parent | b97dc4b92ba1cc9f351854aed1c35c636d2d3992 (diff) | |
| download | edk2-45388d046c3506bd49dca29aed8ec74756e6165c.zip edk2-45388d046c3506bd49dca29aed8ec74756e6165c.tar.gz edk2-45388d046c3506bd49dca29aed8ec74756e6165c.tar.bz2 | |
OvmfPkg: Obtain SEV encryption mask with the new MemEncryptSevLib API
BZ: https://bugzilla.tianocore.org/show_bug.cgi?id=3108
The early assembler code performs validation for some of the SEV-related
information, specifically the encryption bit position. The new
MemEncryptSevGetEncryptionMask() interface provides access to this
validated value.
To ensure that we always use a validated encryption mask for an SEV-ES
guest, update all locations that use CPUID to calculate the encryption
mask to use the new interface.
Also, clean up some call areas where extra masking was being performed
and where a function call was being used instead of the local variable
that was just set using the function.
Cc: Jordan Justen <jordan.l.justen@intel.com>
Cc: Laszlo Ersek <lersek@redhat.com>
Cc: Ard Biesheuvel <ard.biesheuvel@arm.com>
Cc: Rebecca Cran <rebecca@bsdio.com>
Cc: Peter Grehan <grehan@freebsd.org>
Cc: Brijesh Singh <brijesh.singh@amd.com>
Cc: Anthony Perard <anthony.perard@citrix.com>
Cc: Julien Grall <julien@xen.org>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
Signed-off-by: Tom Lendacky <thomas.lendacky@amd.com>
Message-Id: <9de678c0d66443c6cc33e004a4cac0a0223c2ebc.1610045305.git.thomas.lendacky@amd.com>
Diffstat (limited to 'OvmfPkg/AmdSevDxe')
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