From 6a443def87d2698f4fa2d7b57e7f4e5f0f61671a Mon Sep 17 00:00:00 2001 From: Brijesh Singh Date: Thu, 15 Apr 2021 15:55:40 +0000 Subject: KVM: SVM: Add KVM_SEV_RECEIVE_FINISH command The command finalize the guest receiving process and make the SEV guest ready for the execution. Cc: Thomas Gleixner Cc: Ingo Molnar Cc: "H. Peter Anvin" Cc: Paolo Bonzini Cc: Joerg Roedel Cc: Borislav Petkov Cc: Tom Lendacky Cc: x86@kernel.org Cc: kvm@vger.kernel.org Cc: linux-kernel@vger.kernel.org Reviewed-by: Steve Rutherford Signed-off-by: Brijesh Singh Signed-off-by: Ashish Kalra Message-Id: Signed-off-by: Paolo Bonzini --- arch/x86/kvm/svm/sev.c | 23 +++++++++++++++++++++++ 1 file changed, 23 insertions(+) (limited to 'arch/x86/kvm/svm') diff --git a/arch/x86/kvm/svm/sev.c b/arch/x86/kvm/svm/sev.c index ff6435527a67..3f766da43708 100644 --- a/arch/x86/kvm/svm/sev.c +++ b/arch/x86/kvm/svm/sev.c @@ -1551,6 +1551,26 @@ e_free_hdr: 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; +} + int svm_mem_enc_op(struct kvm *kvm, void __user *argp) { struct kvm_sev_cmd sev_cmd; @@ -1631,6 +1651,9 @@ 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; -- cgit