// Copyright (c) 2018 Intel Corporation
//
// SPDX-License-Identifier: Apache-2.0
//

package main

import (
	"github.com/sirupsen/logrus"
)

const (
	cpuFlagsTag        = genericCPUFlagsTag
	archCPUVendorField = genericCPUVendorField
	archCPUModelField  = genericCPUModelField
)

// archRequiredCPUFlags maps a CPU flag value to search for and a
// human-readable description of that value.
var archRequiredCPUFlags = map[string]string{
	"vmx":    "Virtualization support",
	"lm":     "64Bit CPU",
	"sse4_1": "SSE4.1",
}

// archRequiredCPUAttribs maps a CPU (non-CPU flag) attribute value to search for
// and a human-readable description of that value.
var archRequiredCPUAttribs = map[string]string{
	"GenuineIntel": "Intel Architecture CPU",
}

// archRequiredKernelModules maps a required module name to a human-readable
// description of the modules functionality and an optional list of
// required module parameters.
var archRequiredKernelModules = map[string]kernelModule{
	"kvm": {
		desc: "Kernel-based Virtual Machine",
	},
	"kvm_intel": {
		desc: "Intel KVM",
		parameters: map[string]string{
			"nested": "Y",
			// "VMX Unrestricted mode support". This is used
			// as a heuristic to determine if the system is
			// "new enough" to run a Kata Container
			// (atleast a Westmere).
			"unrestricted_guest": "Y",
		},
	},
	"vhost": {
		desc: "Host kernel accelerator for virtio",
	},
	"vhost_net": {
		desc: "Host kernel accelerator for virtio network",
	},
}

// kvmIsUsable determines if it will be possible to create a full virtual machine
// by creating a minimal VM and then deleting it.
func kvmIsUsable() error {
	return genericKvmIsUsable()
}

func archHostCanCreateVMContainer() error {
	return kvmIsUsable()
}

// hostIsVMContainerCapable checks to see if the host is theoretically capable
// of creating a VM container.
func hostIsVMContainerCapable(details vmContainerCapableDetails) error {
	return genericHostIsVMContainerCapable(details)
}

func archKernelParamHandler(onVMM bool, fields logrus.Fields, msg string) bool {
	return genericArchKernelParamHandler(onVMM, fields, msg)
}

func getCPUDetails() (vendor, model string, err error) {
	return genericGetCPUDetails()
}