From 5569e2e7a650dfffd4df7635662b2f92162d6501 Mon Sep 17 00:00:00 2001 From: Steve Rutherford Date: Tue, 20 Apr 2021 05:01:20 -0400 Subject: KVM: SVM: Add support for KVM_SEV_SEND_CANCEL command 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 Reviewed-by: Brijesh Singh Signed-off-by: Steve Rutherford Message-Id: <20210412194408.2458827-1-srutherford@google.com> Signed-off-by: Paolo Bonzini --- include/linux/psp-sev.h | 10 ++++++++++ include/uapi/linux/kvm.h | 2 ++ 2 files changed, 12 insertions(+) (limited to 'include') diff --git a/include/linux/psp-sev.h b/include/linux/psp-sev.h index 73da511b9423..d48a7192e881 100644 --- a/include/linux/psp-sev.h +++ b/include/linux/psp-sev.h @@ -73,6 +73,7 @@ enum sev_cmd { SEV_CMD_SEND_UPDATE_DATA = 0x041, SEV_CMD_SEND_UPDATE_VMSA = 0x042, SEV_CMD_SEND_FINISH = 0x043, + SEV_CMD_SEND_CANCEL = 0x044, /* Guest migration commands (incoming) */ SEV_CMD_RECEIVE_START = 0x050, @@ -392,6 +393,15 @@ struct sev_data_send_finish { u32 handle; /* In */ } __packed; +/** + * struct sev_data_send_cancel - SEND_CANCEL command parameters + * + * @handle: handle of the VM to process + */ +struct sev_data_send_cancel { + u32 handle; /* In */ +} __packed; + /** * struct sev_data_receive_start - RECEIVE_START command parameters * diff --git a/include/uapi/linux/kvm.h b/include/uapi/linux/kvm.h index d07be69f402f..5d1adeb13739 100644 --- a/include/uapi/linux/kvm.h +++ b/include/uapi/linux/kvm.h @@ -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, }; -- cgit v1.2.3