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| author | Brijesh Singh | 2021-04-29 19:07:28 +0200 |
|---|---|---|
| committer | Eduardo Habkost | 2021-06-01 15:32:23 +0200 |
| commit | 3ea1a80243d5b5ba23d8c2b7d3a86034ea0ade22 (patch) | |
| tree | 9cd64f57fe932e5e34ac83a215339c1d2308472f /linux-headers | |
| parent | i386: use global kvm_state in hyperv_enabled() check (diff) | |
| download | qemu-3ea1a80243d5b5ba23d8c2b7d3a86034ea0ade22.tar.gz qemu-3ea1a80243d5b5ba23d8c2b7d3a86034ea0ade22.tar.xz qemu-3ea1a80243d5b5ba23d8c2b7d3a86034ea0ade22.zip | |
target/i386/sev: add support to query the attestation report
The SEV FW >= 0.23 added a new command that can be used to query the
attestation report containing the SHA-256 digest of the guest memory
and VMSA encrypted with the LAUNCH_UPDATE and sign it with the PEK.
Note, we already have a command (LAUNCH_MEASURE) that can be used to
query the SHA-256 digest of the guest memory encrypted through the
LAUNCH_UPDATE. The main difference between previous and this command
is that the report is signed with the PEK and unlike the LAUNCH_MEASURE
command the ATTESATION_REPORT command can be called while the guest
is running.
Add a QMP interface "query-sev-attestation-report" that can be used
to get the report encoded in base64.
Cc: James Bottomley <jejb@linux.ibm.com>
Cc: Tom Lendacky <Thomas.Lendacky@amd.com>
Cc: Eric Blake <eblake@redhat.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: kvm@vger.kernel.org
Reviewed-by: James Bottomley <jejb@linux.ibm.com>
Tested-by: James Bottomley <jejb@linux.ibm.com>
Signed-off-by: Brijesh Singh <brijesh.singh@amd.com>
Reviewed-by: Connor Kuehl <ckuehl@redhat.com>
Message-Id: <20210429170728.24322-1-brijesh.singh@amd.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Diffstat (limited to 'linux-headers')
| -rw-r--r-- | linux-headers/linux/kvm.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/linux-headers/linux/kvm.h b/linux-headers/linux/kvm.h index 020b62a619..897f831374 100644 --- a/linux-headers/linux/kvm.h +++ b/linux-headers/linux/kvm.h @@ -1591,6 +1591,8 @@ enum sev_cmd_id { KVM_SEV_DBG_ENCRYPT, /* Guest certificates commands */ KVM_SEV_CERT_EXPORT, + /* Attestation report */ + KVM_SEV_GET_ATTESTATION_REPORT, KVM_SEV_NR_MAX, }; @@ -1643,6 +1645,12 @@ struct kvm_sev_dbg { __u32 len; }; +struct kvm_sev_attestation_report { + __u8 mnonce[16]; + __u64 uaddr; + __u32 len; +}; + #define KVM_DEV_ASSIGN_ENABLE_IOMMU (1 << 0) #define KVM_DEV_ASSIGN_PCI_2_3 (1 << 1) #define KVM_DEV_ASSIGN_MASK_INTX (1 << 2) |