[edk2-devel] [PATCH v5 11/11] OvmfPkg/AmdSev: Enforce hash verification of kernel blobs
Dov Murik
dovmurik at linux.ibm.com
Tue Jul 27 19:07:24 UTC 2021
In the AmdSevX64 build, use BlobVerifierLibSevHashes to enforce
verification of hashes of the kernel/initrd/cmdline blobs fetched from
firmware config.
This allows for secure (measured) boot of SEV guests with QEMU's
-kernel/-initrd/-append switches (with the corresponding QEMU support
for injecting the hashes table into initial measured guest memory).
Cc: Ard Biesheuvel <ardb+tianocore at kernel.org>
Cc: Jordan Justen <jordan.l.justen at intel.com>
Cc: Ashish Kalra <ashish.kalra at amd.com>
Cc: Brijesh Singh <brijesh.singh at amd.com>
Cc: Erdem Aktas <erdemaktas at google.com>
Cc: James Bottomley <jejb at linux.ibm.com>
Cc: Jiewen Yao <jiewen.yao at intel.com>
Cc: Min Xu <min.m.xu at intel.com>
Cc: Tom Lendacky <thomas.lendacky at amd.com>
Ref: https://bugzilla.tianocore.org/show_bug.cgi?id=3457
Signed-off-by: Dov Murik <dovmurik at linux.ibm.com>
Reviewed-by: Tom Lendacky <thomas.lendacky at amd.com>
---
OvmfPkg/AmdSev/AmdSevX64.dsc | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/OvmfPkg/AmdSev/AmdSevX64.dsc b/OvmfPkg/AmdSev/AmdSevX64.dsc
index db8bd59579b9..e6cd10b75922 100644
--- a/OvmfPkg/AmdSev/AmdSevX64.dsc
+++ b/OvmfPkg/AmdSev/AmdSevX64.dsc
@@ -173,7 +173,7 @@ [LibraryClasses]
LockBoxLib|OvmfPkg/Library/LockBoxLib/LockBoxBaseLib.inf
CustomizedDisplayLib|MdeModulePkg/Library/CustomizedDisplayLib/CustomizedDisplayLib.inf
FrameBufferBltLib|MdeModulePkg/Library/FrameBufferBltLib/FrameBufferBltLib.inf
- BlobVerifierLib|OvmfPkg/Library/BlobVerifierLibNull/BlobVerifierLibNull.inf
+ BlobVerifierLib|OvmfPkg/AmdSev/BlobVerifierLibSevHashes/BlobVerifierLibSevHashes.inf
!if $(SOURCE_DEBUG_ENABLE) == TRUE
PeCoffExtraActionLib|SourceLevelDebugPkg/Library/PeCoffExtraActionLibDebug/PeCoffExtraActionLibDebug.inf
@@ -696,7 +696,7 @@ [Components]
}
OvmfPkg/QemuKernelLoaderFsDxe/QemuKernelLoaderFsDxe.inf {
<LibraryClasses>
- NULL|OvmfPkg/Library/BlobVerifierLibNull/BlobVerifierLibNull.inf
+ NULL|OvmfPkg/AmdSev/BlobVerifierLibSevHashes/BlobVerifierLibSevHashes.inf
}
OvmfPkg/VirtioPciDeviceDxe/VirtioPciDeviceDxe.inf
OvmfPkg/Virtio10Dxe/Virtio10.inf
--
2.25.1
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