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addresspool.go
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addresspool.go
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/*
* This file is part of the KubeVirt project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
* Copyright 2021 Red Hat, Inc.
*
*/
package gpu
import (
v1 "kubevirt.io/api/core/v1"
"kubevirt.io/kubevirt/pkg/virt-launcher/virtwrap/device/hostdevice"
)
// NewPCIAddressPool creates a PCI address pool based on the provided list of host-devices and
// the environment variables that describe the resource.
func NewPCIAddressPool(gpuDevices []v1.GPU) *hostdevice.AddressPool {
return hostdevice.NewAddressPool(v1.PCIResourcePrefix, extractResources(gpuDevices))
}
// NewMDEVAddressPool creates a MDEV address pool based on the provided list of host-devices and
// the environment variables that describe the resource.
func NewMDEVAddressPool(gpuDevices []v1.GPU) *hostdevice.AddressPool {
return hostdevice.NewAddressPool(v1.MDevResourcePrefix, extractResources(gpuDevices))
}
func extractResources(gpuDevices []v1.GPU) []string {
var resourceSet = make(map[string]struct{})
for _, gpuDevice := range gpuDevices {
resourceSet[gpuDevice.DeviceName] = struct{}{}
}
var resources []string
for resource, _ := range resourceSet {
resources = append(resources, resource)
}
return resources
}