Re: [edk2-devel] [PATCH v3 0/2] OvmfPkg: Enable measured direct boot on AMD SEV-SNP

["Lendacky, Thomas via groups.io" <thomas.lendacky=amd.com@groups.io>]

On 3/20/23 05:06, Gerd Hoffmann wrote:
> On Thu, Mar 02, 2023 at 09:15:30AM +0000, Dov Murik wrote:
>> AMD SEV and SEV-ES support measured direct boot with
>> kernel/initrd/cmdline hashes injected by QEMU and verified by OVMF
>> during boot.
>>
>> To enable the same approach for AMD SEV-SNP, we declare the kernel
>> hashes page in the SNP metadata list as a new region type.  When QEMU
>> encounters that region in the list, it will insert the hashes of
>> kernel/initrd/cmdline and encrypt the page (or, if the user turned off
>> kernel hashes, it will validate the page as a zero page).
>>
>> The first patch rearranges the pages in AmdSevX64's MEMFD so they are in
>> the same order both as in the main target (OvmfPkgX64), with the
>> exception of the SEV Launch Secret page which isn't defined in
>> OvmfPkgX64.
>>
>> The second patch modifies the SNP metadata structure such that on
>> AmdSev target the SEV Launch Secret page is explicitly defined in SNP
>> metadata list, and therefore it is not included in the ranges that are
>> pre-validated (zero pages) by the VMM; instead the VMM will insert
>> content into this page (the hashes table), or mark it explicitly as a
>> zero page if no hashes are added.
>>
>> This series is available at:
>> https://github.com/confidential-containers-demo/edk2/tree/snp-kernel-hashes-v3
>>
>> A corresponding QEMU RFC series will be published soon in qemu-devel, or
>> use this tree:
>> https://github.com/confidential-containers-demo/qemu/tree/snp-kernel-hashes-v3
> 
> For the series:
> Acked-by: Gerd Hoffmann <kraxel@redhat.com>

I've noticed that series was never picked up. Any chance that this can be 
merged?

Thanks,
Tom

> 


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