On 02-03-2026 15:36, 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
> =============
> v6 -> v7:
> Rebase after 7.0 merge window
>
> 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 | 27 ++++++++
> 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, 131 insertions(+)
>
>
> base-commit: 55365ab85a93edec22395547cdc7cbe73a98231b
Gentle ping.
Thanks,
Thomas