github.com/SagerNet/gvisor@v0.0.0-20210707092255-7731c139d75c/pkg/hostarch/hostarch_x86.go (about)

     1  // Copyright 2018 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  // +build amd64 386
    16  
    17  package hostarch
    18  
    19  import "encoding/binary"
    20  
    21  const (
    22  	// PageSize is the system page size.
    23  	PageSize = 1 << PageShift
    24  
    25  	// HugePageSize is the system huge page size.
    26  	HugePageSize = 1 << HugePageShift
    27  
    28  	// PageShift is the binary log of the system page size.
    29  	PageShift = 12
    30  
    31  	// HugePageShift is the binary log of the system huge page size.
    32  	HugePageShift = 21
    33  )
    34  
    35  var (
    36  	// ByteOrder is the native byte order (little endian).
    37  	ByteOrder = binary.LittleEndian
    38  )