[6.6] HYGON:Support CSV(2) guest attestation, CSV firmware update, CSV(2) guest migration, CSV(2) guest reboot, x86-psp communicate interfaces

Documentation/virt/coco/csv-guest.rst

@@ -0,0 +1,33 @@
+.. SPDX-License-Identifier: GPL-2.0
+
+===================================================================
+CSV Guest API Documentation
+===================================================================
+
+1. General description
+======================
+
+The CSV guest driver exposes IOCTL interfaces via the /dev/csv-guest misc
+device to allow userspace to get certain CSV guest-specific details.
+
+2. API description
+==================
+
+In this section, for each supported IOCTL, the following information is
+provided along with a generic description.
+
+:Input parameters: Parameters passed to the IOCTL and related details.
+:Output: Details about output data and return value (with details about
+         the non common error values).
+
+2.1 CSV_CMD_GET_REPORT
+-----------------------
+
+:Input parameters: struct csv_report_req
+:Output: Upon successful execution, CSV_REPORT data is copied to
+         csv_report_req.report_data and return 0. Return -EINVAL for invalid
+         operands, -EIO on VMMCALL failure or standard error number on other
+         common failures.
+
+The CSV_CMD_GET_REPORT IOCTL can be used by the attestation software to get
+the CSV_REPORT from the CSV module using VMMCALL[KVM_HC_VM_ATTESTATION].

arch/x86/configs/deepin_x86_desktop_defconfig

@@ -4354,6 +4354,7 @@ CONFIG_VFIO_PCI_VGA=y
 CONFIG_VIRT_DRIVERS=y
 CONFIG_VBOXGUEST=m
 CONFIG_NITRO_ENCLAVES=m
+CONFIG_CSV_GUEST=m
 CONFIG_VIRTIO_PCI=y
 CONFIG_VIRTIO_VDPA=m
 CONFIG_VIRTIO_PMEM=m

arch/x86/include/asm/kvm-x86-ops.h

@@ -135,6 +135,9 @@ KVM_X86_OP(msr_filter_changed)
 KVM_X86_OP(complete_emulated_msr)
 KVM_X86_OP(vcpu_deliver_sipi_vector)
 KVM_X86_OP_OPTIONAL_RET0(vcpu_get_apicv_inhibit_reasons);
+KVM_X86_OP_OPTIONAL(vm_attestation)
+KVM_X86_OP_OPTIONAL(control_pre_system_reset)
+KVM_X86_OP_OPTIONAL(control_post_system_reset)
 
 #undef KVM_X86_OP
 #undef KVM_X86_OP_OPTIONAL

arch/x86/include/asm/kvm_host.h

@@ -1751,6 +1751,13 @@ struct kvm_x86_ops {
 	 * Returns vCPU specific APICv inhibit reasons
 	 */
 	unsigned long (*vcpu_get_apicv_inhibit_reasons)(struct kvm_vcpu *vcpu);
+
+	/*
+	 * Interfaces for HYGON CSV guest
+	 */
+	int (*vm_attestation)(struct kvm *kvm, unsigned long gpa, unsigned long len);
+	int (*control_pre_system_reset)(struct kvm *kvm);
+	int (*control_post_system_reset)(struct kvm *kvm);
 };
 
 struct kvm_x86_nested_ops {

arch/x86/kvm/Makefile

@@ -33,6 +33,8 @@ ifdef CONFIG_HYPERV
 kvm-amd-y		+= svm/svm_onhyperv.o
 endif
 
+kvm-amd-$(CONFIG_HYGON_CSV)	+= svm/csv.o
+
 obj-$(CONFIG_KVM)	+= kvm.o
 obj-$(CONFIG_KVM_INTEL)	+= kvm-intel.o
 obj-$(CONFIG_KVM_AMD)	+= kvm-amd.o