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Re: [Qemu-devel] [RFC PATCH v1 06/10] KVM: SVM: Add KVM_SEV_RECEIVE_FINI
From: |
Lendacky, Thomas |
Subject: |
Re: [Qemu-devel] [RFC PATCH v1 06/10] KVM: SVM: Add KVM_SEV_RECEIVE_FINISH command |
Date: |
Fri, 26 Apr 2019 21:11:54 +0000 |
On 4/24/19 11:10 AM, Singh, Brijesh wrote:
> The command finalize the guest receiving process and make the SEV guest
> ready for the execution.
>
> Cc: Thomas Gleixner <address@hidden>
> Cc: Ingo Molnar <address@hidden>
> Cc: "H. Peter Anvin" <address@hidden>
> Cc: Paolo Bonzini <address@hidden>
> Cc: "Radim Krčmář" <address@hidden>
> Cc: Joerg Roedel <address@hidden>
> Cc: Borislav Petkov <address@hidden>
> Cc: Tom Lendacky <address@hidden>
> Cc: address@hidden
> Cc: address@hidden
> Cc: address@hidden
> Signed-off-by: Brijesh Singh <address@hidden>
> ---
> .../virtual/kvm/amd-memory-encryption.rst | 8 +++++++
> arch/x86/kvm/svm.c | 23 +++++++++++++++++++
> 2 files changed, 31 insertions(+)
>
> diff --git a/Documentation/virtual/kvm/amd-memory-encryption.rst
> b/Documentation/virtual/kvm/amd-memory-encryption.rst
> index b9c3dc02f344..72c45f93abd7 100644
> --- a/Documentation/virtual/kvm/amd-memory-encryption.rst
> +++ b/Documentation/virtual/kvm/amd-memory-encryption.rst
> @@ -346,6 +346,14 @@ Returns: 0 on success, -negative on error
> __u32 trans_len;
> };
>
> +15. KVM_SEV_RECEIVE_FINISH
> +------------------------
> +
> +After completion of the migration flow, the KVM_SEV_RECEIVE_FINISH command
> can be
> +issued by the hypervisor to make the guest ready for the execution.
for execution.
Thanks,
Tom
> +
> +Returns: 0 on success, -negative on error
> +
> References
> ==========
>
> diff --git a/arch/x86/kvm/svm.c b/arch/x86/kvm/svm.c
> index c81cac09c5af..74b57ab742ad 100644
> --- a/arch/x86/kvm/svm.c
> +++ b/arch/x86/kvm/svm.c
> @@ -7350,6 +7350,26 @@ static int sev_receive_update_data(struct kvm *kvm,
> struct kvm_sev_cmd *argp)
> return ret;
> }
>
> +static int sev_receive_finish(struct kvm *kvm, struct kvm_sev_cmd *argp)
> +{
> + struct kvm_sev_info *sev = &to_kvm_svm(kvm)->sev_info;
> + struct sev_data_receive_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_RECEIVE_FINISH, data, &argp->error);
> +
> + kfree(data);
> + return ret;
> +}
> +
> static int svm_mem_enc_op(struct kvm *kvm, void __user *argp)
> {
> struct kvm_sev_cmd sev_cmd;
> @@ -7406,6 +7426,9 @@ static int svm_mem_enc_op(struct kvm *kvm, void __user
> *argp)
> case KVM_SEV_RECEIVE_UPDATE_DATA:
> r = sev_receive_update_data(kvm, &sev_cmd);
> break;
> + case KVM_SEV_RECEIVE_FINISH:
> + r = sev_receive_finish(kvm, &sev_cmd);
> + break;
> default:
> r = -EINVAL;
> goto out;
>
- Re: [Qemu-devel] [RFC PATCH v1 01/10] KVM: SVM: Add KVM_SEV SEND_START command, (continued)
[Qemu-devel] [RFC PATCH v1 09/10] KVM: x86: Introduce KVM_GET_PAGE_ENC_BITMAP ioctl, Singh, Brijesh, 2019/04/24
[Qemu-devel] [RFC PATCH v1 10/10] mm: x86: Invoke hypercall when page encryption status is changed, Singh, Brijesh, 2019/04/24
[Qemu-devel] [RFC PATCH v1 02/10] KVM: SVM: Add KVM_SEND_UPDATE_DATA command, Singh, Brijesh, 2019/04/24
[Qemu-devel] [RFC PATCH v1 04/10] KVM: SVM: Add support for KVM_SEV_RECEIVE_START command, Singh, Brijesh, 2019/04/24
[Qemu-devel] [RFC PATCH v1 06/10] KVM: SVM: Add KVM_SEV_RECEIVE_FINISH command, Singh, Brijesh, 2019/04/24
- Re: [Qemu-devel] [RFC PATCH v1 06/10] KVM: SVM: Add KVM_SEV_RECEIVE_FINISH command,
Lendacky, Thomas <=
[Qemu-devel] [RFC PATCH v1 05/10] KVM: SVM: Add KVM_SEV_RECEIVE_UPDATE_DATA command, Singh, Brijesh, 2019/04/24
[Qemu-devel] [RFC PATCH v1 03/10] KVM: SVM: Add KVM_SEV_SEND_FINISH command, Singh, Brijesh, 2019/04/24
[Qemu-devel] [RFC PATCH v1 07/10] KVM: x86: Add AMD SEV specific Hypercall3, Singh, Brijesh, 2019/04/24
[Qemu-devel] [RFC PATCH v1 08/10] KVM: X86: Introduce KVM_HC_PAGE_ENC_STATUS hypercall, Singh, Brijesh, 2019/04/24
Re: [Qemu-devel] [RFC PATCH v1 00/10] Add AMD SEV guest live migration support, Steve Rutherford, 2019/04/24