Re: [PATCH v6 0/1] KVM: SEV: Add KVM_SEV_SNP_HV_REPORT_REQ command

[Thomas Courrege]

On 29-01-2026 11:35, Thomas Courrege wrote:
>
> -- 
> Regards,
> Thomas
> On 28-01-2026 20:49, Thomas Courrege wrote:
>> Overview
>> --------
>> The SEV-SNP Firmware ABI allows the hypervisor to request an
>> attestation report via the SEV_CMD_SNP_HV_REPORT_REQ firmware command.
> This allow KVM to expose more of AMD’s SEV‑SNP features.
>
> It also allow developers to easily request attestation.
> It could maybe be use by some cloud provider to easily provide an
> attestation report through their API, in case the Guest doesn't respond
> fast enough or even to compare the reports.
>> Testing
>> -------
>> For testing this via QEMU, please use the following tree:
>>         https://github.com/Th0rOnDoR/qemu
>>
>> Patch History
>> -------------
>> v5 -> v6:
>> Fix typos issues in documentation
>>
>> v4 -> v5:
>> Set variables in reverse christmas tree order
>> Fix and clean the rsp_size logic
>>
>> v3 -> v4:
>> Add newline in documentation to avoid a warning
>> Add base commit
>>
>> v2 -> v3:
>> Add padding to structure, code format
>> Write back the full MSG_REPORT_RSP structure
>> Remove the memzero_explicit for the report
>>
>> v1 -> v2:
>> Renaming, code format
>> Zeroes the report before returning
>>
>>
>> Any feedback is appreciated.
>>
>> Thanks,
>> Thomas
>>
>>
>> Thomas Courrege (1):
>>   KVM: SEV: Add KVM_SEV_SNP_HV_REPORT_REQ command
>>
>>  .../virt/kvm/x86/amd-memory-encryption.rst    | 28 +++++++++
>>  arch/x86/include/uapi/asm/kvm.h               |  9 +++
>>  arch/x86/kvm/svm/sev.c                        | 63 +++++++++++++++++++
>>  drivers/crypto/ccp/sev-dev.c                  |  1 +
>>  include/linux/psp-sev.h                       | 31 +++++++++
>>  5 files changed, 132 insertions(+)
>>
>>
>> base-commit: e89f0e9a0a007e8c3afb8ecd739c0b3255422b00

Gentle ping

Regards,
Thomas