github.com/metacubex/gvisor@v0.0.0-20240320004321-933faba989ec/pkg/sentry/devices/nvproxy/save_restore.go (about)

     1  // Copyright 2023 The gVisor Authors.
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License");
     4  // you may not use this file except in compliance with the License.
     5  // You may obtain a copy of the License at
     6  //
     7  //     http://www.apache.org/licenses/LICENSE-2.0
     8  //
     9  // Unless required by applicable law or agreed to in writing, software
    10  // distributed under the License is distributed on an "AS IS" BASIS,
    11  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    12  // See the License for the specific language governing permissions and
    13  // limitations under the License.
    14  
    15  package nvproxy
    16  
    17  import (
    18  	goContext "context"
    19  	"fmt"
    20  
    21  	"github.com/metacubex/gvisor/pkg/abi/nvgpu"
    22  	"github.com/metacubex/gvisor/pkg/context"
    23  )
    24  
    25  func (n *nvproxy) beforeSave() {
    26  	n.objsMu.Lock()
    27  	defer n.objsMu.Unlock()
    28  	for _, o := range n.objsLive {
    29  		o.Release(context.Background())
    30  	}
    31  	n.objsLive = nil
    32  }
    33  
    34  func (n *nvproxy) afterLoad(goContext.Context) {
    35  	Init()
    36  	abiCons, ok := abis[n.version]
    37  	if !ok {
    38  		panic(fmt.Sprintf("driver version %q not found in abis map", n.version))
    39  	}
    40  	n.abi = abiCons.cons()
    41  	n.objsLive = make(map[nvgpu.Handle]*object)
    42  }