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KVM: SVM: Add support for KVM_SEV_SEND_CANCEL command

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After completion of SEND_START, but before SEND_FINISH, the source VMM can
issue the SEND_CANCEL command to stop a migration. This is necessary so
that a cancelled migration can restart with a new target later.

Reviewed-by: Nathan Tempelman <natet@google.com>
Reviewed-by: Brijesh Singh <brijesh.singh@amd.com>
Signed-off-by: Steve Rutherford <srutherford@google.com>
Message-Id: <20210412194408.2458827-1-srutherford@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Steve Rutherford 2021-04-20 05:01:20 -04:00 • committed by Paolo Bonzini
parent fddecf6a23
commit 5569e2e7a6
5 changed files with 45 additions and 0 deletions
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2
include/uapi/linux/kvm.h
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@ -1674,6 +1674,8 @@ enum sev_cmd_id {
KVM_SEV_CERT_EXPORT,
/* Attestation report */
KVM_SEV_GET_ATTESTATION_REPORT,
/* Guest Migration Extension */
KVM_SEV_SEND_CANCEL,
KVM_SEV_NR_MAX,
};