From: Ashish Kalra <Ashish.Kalra@amd.com>
To: pbonzini@redhat.com
Cc: tglx@linutronix.de, mingo@redhat.com, hpa@zytor.com,
joro@8bytes.org, bp@suse.de, thomas.lendacky@amd.com,
x86@kernel.org, kvm@vger.kernel.org,
linux-kernel@vger.kernel.org, srutherford@google.com,
seanjc@google.com, venu.busireddy@oracle.com,
brijesh.singh@amd.com
Subject: [PATCH v13 03/12] KVM: SVM: Add KVM_SEV_SEND_FINISH command
Date: Thu, 15 Apr 2021 15:54:15 +0000 [thread overview]
Message-ID: <5082bd6a8539d24bc55a1dd63a1b341245bb168f.1618498113.git.ashish.kalra@amd.com> (raw)
In-Reply-To: <cover.1618498113.git.ashish.kalra@amd.com>
From: Brijesh Singh <brijesh.singh@amd.com>
The command is used to finailize the encryption context created with
KVM_SEV_SEND_START command.
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Joerg Roedel <joro@8bytes.org>
Cc: Borislav Petkov <bp@suse.de>
Cc: Tom Lendacky <thomas.lendacky@amd.com>
Cc: x86@kernel.org
Cc: kvm@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Reviewed-by: Steve Rutherford <srutherford@google.com>
Signed-off-by: Brijesh Singh <brijesh.singh@amd.com>
Signed-off-by: Ashish Kalra <ashish.kalra@amd.com>
---
.../virt/kvm/amd-memory-encryption.rst | 8 +++++++
arch/x86/kvm/svm/sev.c | 23 +++++++++++++++++++
2 files changed, 31 insertions(+)
diff --git a/Documentation/virt/kvm/amd-memory-encryption.rst b/Documentation/virt/kvm/amd-memory-encryption.rst
index 3c5456e0268a..26c4e6c83f62 100644
--- a/Documentation/virt/kvm/amd-memory-encryption.rst
+++ b/Documentation/virt/kvm/amd-memory-encryption.rst
@@ -335,6 +335,14 @@ Returns: 0 on success, -negative on error
__u32 trans_len;
};
+12. KVM_SEV_SEND_FINISH
+------------------------
+
+After completion of the migration flow, the KVM_SEV_SEND_FINISH command can be
+issued by the hypervisor to delete the encryption context.
+
+Returns: 0 on success, -negative on error
+
References
==========
diff --git a/arch/x86/kvm/svm/sev.c b/arch/x86/kvm/svm/sev.c
index 30527285a39a..92325d9527ce 100644
--- a/arch/x86/kvm/svm/sev.c
+++ b/arch/x86/kvm/svm/sev.c
@@ -1350,6 +1350,26 @@ static int sev_send_update_data(struct kvm *kvm, struct kvm_sev_cmd *argp)
return ret;
}
+static int sev_send_finish(struct kvm *kvm, struct kvm_sev_cmd *argp)
+{
+ struct kvm_sev_info *sev = &to_kvm_svm(kvm)->sev_info;
+ struct sev_data_send_finish *data;
+ int ret;
+
+ if (!sev_guest(kvm))
+ return -ENOTTY;
+
+ data = kzalloc(sizeof(*data), GFP_KERNEL);
+ if (!data)
+ return -ENOMEM;
+
+ data->handle = sev->handle;
+ ret = sev_issue_cmd(kvm, SEV_CMD_SEND_FINISH, data, &argp->error);
+
+ kfree(data);
+ return ret;
+}
+
int svm_mem_enc_op(struct kvm *kvm, void __user *argp)
{
struct kvm_sev_cmd sev_cmd;
@@ -1409,6 +1429,9 @@ int svm_mem_enc_op(struct kvm *kvm, void __user *argp)
case KVM_SEV_SEND_UPDATE_DATA:
r = sev_send_update_data(kvm, &sev_cmd);
break;
+ case KVM_SEV_SEND_FINISH:
+ r = sev_send_finish(kvm, &sev_cmd);
+ break;
default:
r = -EINVAL;
goto out;
--
2.17.1
next prev parent reply other threads:[~2021-04-15 15:54 UTC|newest]
Thread overview: 43+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-04-15 15:52 [PATCH v13 00/12] Add AMD SEV guest live migration support Ashish Kalra
2021-04-15 15:53 ` [PATCH v13 01/12] KVM: SVM: Add KVM_SEV SEND_START command Ashish Kalra
2021-04-20 8:50 ` Paolo Bonzini
2021-04-15 15:53 ` [PATCH v13 02/12] KVM: SVM: Add KVM_SEND_UPDATE_DATA command Ashish Kalra
2021-04-15 15:54 ` Ashish Kalra [this message]
2021-04-15 15:54 ` [PATCH v13 04/12] KVM: SVM: Add support for KVM_SEV_RECEIVE_START command Ashish Kalra
2021-04-20 8:38 ` Paolo Bonzini
2021-04-20 9:18 ` Paolo Bonzini
2021-04-15 15:55 ` [PATCH v13 05/12] KVM: SVM: Add KVM_SEV_RECEIVE_UPDATE_DATA command Ashish Kalra
2021-04-20 8:40 ` Paolo Bonzini
2021-04-20 8:43 ` Paolo Bonzini
2021-04-15 15:55 ` [PATCH v13 06/12] KVM: SVM: Add KVM_SEV_RECEIVE_FINISH command Ashish Kalra
2021-04-15 15:56 ` [PATCH v13 07/12] KVM: x86: Add AMD SEV specific Hypercall3 Ashish Kalra
2021-04-15 15:57 ` [PATCH v13 08/12] KVM: X86: Introduce KVM_HC_PAGE_ENC_STATUS hypercall Ashish Kalra
2021-04-20 11:10 ` Paolo Bonzini
2021-04-20 17:24 ` Sean Christopherson
2021-04-15 15:57 ` [PATCH v13 09/12] mm: x86: Invoke hypercall when page encryption status is changed Ashish Kalra
2021-04-20 9:39 ` Paolo Bonzini
2021-04-21 10:05 ` Borislav Petkov
2021-04-21 12:00 ` Paolo Bonzini
2021-04-21 14:09 ` Borislav Petkov
2021-04-21 12:12 ` Ashish Kalra
2021-04-21 13:50 ` Brijesh Singh
2021-04-21 13:52 ` Borislav Petkov
2021-04-15 15:58 ` [PATCH v13 10/12] KVM: x86: Introduce new KVM_FEATURE_SEV_LIVE_MIGRATION feature & Custom MSR Ashish Kalra
2021-04-19 23:06 ` Sean Christopherson
2021-04-20 10:49 ` Paolo Bonzini
2021-04-20 9:47 ` Paolo Bonzini
2021-04-15 15:58 ` [PATCH v13 11/12] EFI: Introduce the new AMD Memory Encryption GUID Ashish Kalra
2021-04-15 16:01 ` [PATCH v13 12/12] x86/kvm: Add guest support for detecting and enabling SEV Live Migration feature Ashish Kalra
2021-04-20 10:52 ` Paolo Bonzini
2021-04-21 14:44 ` Borislav Petkov
2021-04-21 15:22 ` Ashish Kalra
2021-04-21 15:32 ` Borislav Petkov
2021-04-21 15:38 ` Paolo Bonzini
2021-04-21 18:48 ` Ashish Kalra
2021-04-21 19:19 ` Ashish Kalra
2021-04-16 21:43 ` [PATCH v13 00/12] Add AMD SEV guest live migration support Steve Rutherford
2021-04-19 14:40 ` Ashish Kalra
2021-04-20 11:11 ` Paolo Bonzini
2021-04-20 18:51 ` Borislav Petkov
2021-04-20 19:08 ` Paolo Bonzini
2021-04-20 20:28 ` Borislav Petkov
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