mirror of
https://github.com/aljazceru/kata-containers.git
synced 2026-01-20 23:04:22 +01:00
9b23d4f143
Since we prefer vsock over virtio serial port, we add 'vhost_vsock' in kernel mosules list. But vhost_vsock.ko shouldn't be the definitely required kernel modules, afterall, we could also use virtio serial port. if kata-env shows SupportsVSocks as false, users could run kata-check to manually load vhost_vsock.ko and get detailed info(errors) Fixes: #1512 Signed-off-by: Penny Zheng <penny.zheng@arm.com>
130 lines
3.2 KiB
Go
130 lines
3.2 KiB
Go
// Copyright (c) 2018 Intel Corporation
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//
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// SPDX-License-Identifier: Apache-2.0
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//
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package main
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import (
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"fmt"
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"github.com/sirupsen/logrus"
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"strings"
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)
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const (
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cpuFlagsTag = genericCPUFlagsTag
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archCPUVendorField = genericCPUVendorField
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// On s390x the cpu model is indicated by the field machine.
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// Example:
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// processor 0: version = FF, identification = 3FEC87, machine = 2964
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archCPUModelField = "machine"
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)
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// archRequiredCPUFlags maps a CPU flag value to search for and a
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// human-readable description of that value.
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var archRequiredCPUFlags = map[string]string{}
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// archRequiredCPUAttribs maps a CPU (non-CPU flag) attribute value to search for
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// and a human-readable description of that value.
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var archRequiredCPUAttribs = map[string]string{}
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// archRequiredKernelModules maps a required module name to a human-readable
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// description of the modules functionality and an optional list of
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// required module parameters.
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var archRequiredKernelModules = map[string]kernelModule{
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"kvm": {
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desc: "Kernel-based Virtual Machine",
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required: true,
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},
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"vhost_vsock": {
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desc: "Host Support for Linux VM Sockets",
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required: false,
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},
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}
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func setCPUtype() error {
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return nil
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}
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// kvmIsUsable determines if it will be possible to create a full virtual machine
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// by creating a minimal VM and then deleting it.
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func kvmIsUsable() error {
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return genericKvmIsUsable()
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}
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func archHostCanCreateVMContainer() error {
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return kvmIsUsable()
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}
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// hostIsVMContainerCapable checks to see if the host is theoretically capable
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// of creating a VM container.
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func hostIsVMContainerCapable(details vmContainerCapableDetails) error {
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_, err := getCPUInfo(details.cpuInfoFile)
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if err != nil {
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return err
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}
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count, err := checkKernelModules(details.requiredKernelModules, archKernelParamHandler)
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if err != nil {
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return err
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}
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if count == 0 {
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return nil
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}
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return fmt.Errorf("ERROR: %s", failMessage)
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}
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func archKernelParamHandler(onVMM bool, fields logrus.Fields, msg string) bool {
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return genericArchKernelParamHandler(onVMM, fields, msg)
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}
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// getS390xCPUDetails returns the cpu information
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func getS390xCPUDetails() (vendor, model string, err error) {
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prefixModel := "processor"
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cpuinfo, err := getCPUInfo(procCPUInfo)
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if err != nil {
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return "", "", err
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}
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lines := strings.Split(cpuinfo, "\n")
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for _, line := range lines {
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if archCPUVendorField != "" {
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if strings.HasPrefix(line, archCPUVendorField) {
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fields := strings.Split(line, ":")
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if len(fields) > 1 {
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vendor = strings.TrimSpace(fields[1])
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}
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}
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}
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if archCPUModelField != "" {
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if strings.HasPrefix(line, prefixModel) {
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fields := strings.Split(strings.TrimSpace(line), ",")
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cpuModel := strings.Split(fields[2], "=")
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model = strings.TrimSpace(cpuModel[1])
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}
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}
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}
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if vendor == "" {
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return "", "", fmt.Errorf("cannot find vendor field in file %v", procCPUInfo)
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}
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if model == "" {
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return "", "", fmt.Errorf("Error in parsing cpu model from %v", procCPUInfo)
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}
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return vendor, model, nil
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}
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func getCPUDetails() (vendor, model string, err error) {
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if vendor, model, err := genericGetCPUDetails(); err == nil {
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return vendor, model, nil
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}
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return getS390xCPUDetails()
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}
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