github.com/MerlinKodo/gvisor@v0.0.0-20231110090155-957f62ecf90e/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  //go:build amd64 || 386
    16  // +build amd64 386
    17  
    18  package hostarch
    19  
    20  import "encoding/binary"
    21  
    22  const (
    23  	// PageSize is the system page size.
    24  	PageSize = 1 << PageShift
    25  
    26  	// HugePageSize is the system huge page size.
    27  	HugePageSize = 1 << HugePageShift
    28  
    29  	// CacheLineSize is the size of the cache line.
    30  	CacheLineSize = 1 << CacheLineShift
    31  
    32  	// PageShift is the binary log of the system page size.
    33  	PageShift = 12
    34  
    35  	// HugePageShift is the binary log of the system huge page size.
    36  	HugePageShift = 21
    37  
    38  	// CacheLineShift is the binary log of the cache line size.
    39  	CacheLineShift = 6
    40  )
    41  
    42  var (
    43  	// ByteOrder is the native byte order (little endian).
    44  	ByteOrder = binary.LittleEndian
    45  )