diff options
Diffstat (limited to 'meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.14.71-e3000/0080-KVM-SVM-Add-support-for-SEV-LAUNCH_SECRET-command.patch')
-rw-r--r-- | meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.14.71-e3000/0080-KVM-SVM-Add-support-for-SEV-LAUNCH_SECRET-command.patch | 117 |
1 files changed, 117 insertions, 0 deletions
diff --git a/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.14.71-e3000/0080-KVM-SVM-Add-support-for-SEV-LAUNCH_SECRET-command.patch b/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.14.71-e3000/0080-KVM-SVM-Add-support-for-SEV-LAUNCH_SECRET-command.patch new file mode 100644 index 00000000..fa17dc72 --- /dev/null +++ b/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.14.71-e3000/0080-KVM-SVM-Add-support-for-SEV-LAUNCH_SECRET-command.patch @@ -0,0 +1,117 @@ +From df27d409eaaf9275190905f8714ca2c1ae2c19b5 Mon Sep 17 00:00:00 2001 +From: Brijesh Singh <brijesh.singh@amd.com> +Date: Mon, 4 Dec 2017 10:57:38 -0600 +Subject: [PATCH 80/95] KVM: SVM: Add support for SEV LAUNCH_SECRET command +MIME-Version: 1.0 +Content-Type: text/plain; charset=UTF-8 +Content-Transfer-Encoding: 8bit + +The command is used for injecting a secret into the guest memory region. + +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: "Radim Krčmář" <rkrcmar@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 +Signed-off-by: Brijesh Singh <brijesh.singh@amd.com> +Reviewed-by: Borislav Petkov <bp@suse.de> +Signed-off-by: Sudheesh Mavila <sudheesh.mavila@amd.com> +--- + arch/x86/kvm/svm.c | 68 ++++++++++++++++++++++++++++++++++++++++++++++++++++++ + 1 file changed, 68 insertions(+) + +diff --git a/arch/x86/kvm/svm.c b/arch/x86/kvm/svm.c +index 94461e3..83a4dfe 100755 +--- a/arch/x86/kvm/svm.c ++++ b/arch/x86/kvm/svm.c +@@ -6503,6 +6503,71 @@ static int sev_dbg_crypt(struct kvm *kvm, struct kvm_sev_cmd *argp, bool dec) + return ret; + } + ++static int sev_launch_secret(struct kvm *kvm, struct kvm_sev_cmd *argp) ++{ ++ struct kvm_sev_info *sev = &kvm->arch.sev_info; ++ struct sev_data_launch_secret *data; ++ struct kvm_sev_launch_secret params; ++ struct page **pages; ++ void *blob, *hdr; ++ unsigned long n; ++ int ret; ++ ++ if (!sev_guest(kvm)) ++ return -ENOTTY; ++ ++ if (copy_from_user(¶ms, (void __user *)(uintptr_t)argp->data, sizeof(params))) ++ return -EFAULT; ++ ++ pages = sev_pin_memory(kvm, params.guest_uaddr, params.guest_len, &n, 1); ++ if (!pages) ++ return -ENOMEM; ++ ++ /* ++ * The secret must be copied into contiguous memory region, lets verify ++ * that userspace memory pages are contiguous before we issue command. ++ */ ++ if (get_num_contig_pages(0, pages, n) != n) { ++ ret = -EINVAL; ++ goto e_unpin_memory; ++ } ++ ++ ret = -ENOMEM; ++ data = kzalloc(sizeof(*data), GFP_KERNEL); ++ if (!data) ++ goto e_unpin_memory; ++ ++ blob = psp_copy_user_blob(params.trans_uaddr, params.trans_len); ++ if (IS_ERR(blob)) { ++ ret = PTR_ERR(blob); ++ goto e_free; ++ } ++ ++ data->trans_address = __psp_pa(blob); ++ data->trans_len = params.trans_len; ++ ++ hdr = psp_copy_user_blob(params.hdr_uaddr, params.hdr_len); ++ if (IS_ERR(hdr)) { ++ ret = PTR_ERR(hdr); ++ goto e_free_blob; ++ } ++ data->trans_address = __psp_pa(blob); ++ data->trans_len = params.trans_len; ++ ++ data->handle = sev->handle; ++ ret = sev_issue_cmd(kvm, SEV_CMD_LAUNCH_UPDATE_SECRET, data, &argp->error); ++ ++ kfree(hdr); ++ ++e_free_blob: ++ kfree(blob); ++e_free: ++ kfree(data); ++e_unpin_memory: ++ sev_unpin_memory(kvm, pages, n); ++ return ret; ++} ++ + static int svm_mem_enc_op(struct kvm *kvm, void __user *argp) + { + struct kvm_sev_cmd sev_cmd; +@@ -6541,6 +6606,9 @@ static int svm_mem_enc_op(struct kvm *kvm, void __user *argp) + case KVM_SEV_DBG_ENCRYPT: + r = sev_dbg_crypt(kvm, &sev_cmd, false); + break; ++ case KVM_SEV_LAUNCH_SECRET: ++ r = sev_launch_secret(kvm, &sev_cmd); ++ break; + default: + r = -EINVAL; + goto out; +-- +2.7.4 + |