<!DOCTYPE html><htmllang="en"><head><metacharset="utf-8"><metaname="viewport"content="width=device-width, initial-scale=1.0"><metaname="generator"content="rustdoc"><metaname="description"content="Memory management implementation"><title>os::mm - Rust</title><script>if(window.location.protocol!=="file:")document.head.insertAdjacentHTML("beforeend","SourceSerif4-Regular-46f98efaafac5295.ttf.woff2,FiraSans-Regular-018c141bf0843ffd.woff2,FiraSans-Medium-8f9a781e4970d388.woff2,SourceCodePro-Regular-562dcc5011b6de7d.ttf.woff2,SourceCodePro-Semibold-d899c5a5c4aeb14a.ttf.woff2".split(",").map(f=>`<link rel="preload" as="font" type="font/woff2" crossorigin href="../../static.files/${f}">`).join(""))</script><linkrel="stylesheet"href="../../static.files/normalize-76eba96aa4d2e634.css"><linkrel="stylesheet"href="../../static.files/rustdoc-b21aa549bf6d91ff.css"><metaname="rustdoc-vars"data-root-path="../../"data-static-root-path="../../static.files/"data-current-crate="os"data-themes=""data-resource-suffix=""data-rustdoc-version="1.80.0-nightly (f705de596 2024-04-30)"data-channel="nightly"data-search-js="search-bf21c90c8c1d92b1.js"data-settings-js="settings-4313503d2e1961c2.js"><scriptsrc="../../static.files/storage-e32f0c247825364d.js"></script><scriptdefersrc="../sidebar-items.js"></script><scriptdefersrc="../../static.files/main-20a3ad099b048cf2.js"></script><noscript><linkrel="stylesheet"href="../../static.files/noscript-09095024cf37855e.css"></noscript><linkrel="alternate icon"type="image/png"href="../../static.files/favicon-32x32-422f7d1d52889060.png"><linkrel="icon"type="image/svg+xml"href="../../static.files/favicon-2c020d218678b618.svg"></head><bodyclass="rustdoc mod"><!--[if lte IE 11]><div class="warning">This old browser is unsupported and will most likely display funky things.</div><![endif]--><navclass="mobile-topbar"><buttonclass="sidebar-menu-toggle"title="show sidebar"></button></nav><navclass="sidebar"><divclass="sidebar-crate"><h2><ahref="../../os/index.html">os</a><spanclass="version">0.1.0</span></h2></div><h2class="location"><ahref="#">Module mm</a></h2><divclass="sidebar-elems"><section><ulclass="block"><li><ahref="#reexports">Re-exports</a></li><li><ahref="#modules">Modules</a></li><li><ahref="#structs">Structs</a></li><li><ahref="#functions">Functions</a></li></ul></section><h2><ahref="../index.html">In crate os</a></h2></div></nav><divclass="sidebar-resizer"></div><main><divclass="width-limiter"><navclass="sub"><formclass="search-form"><span></span><divid="sidebar-button"tabindex="-1"><ahref="../../os/all.html"title="show sidebar"></a></div><inputclass="search-input"name="search"aria-label="Run search in the documentation"autocomplete="off"spellcheck="false"placeholder="Type ‘S’ or ‘/’ to search, ‘?’ for more options…"type="search"><divid="help-button"tabindex="-1"><ahref="../../help.html"title="help">?</a></div><divid="settings-menu"tabindex="-1"><ahref="../../settings.html"title="settings">Settings</a></div></form></nav><sectionid="main-content"class="content"><divclass="main-heading"><h1>Module <ahref="../index.html">os</a>::<wbr><aclass="mod"href="#">mm</a><buttonid="copy-path"title="Copy item path to clipboard">Copy item path</button></h1><spanclass="out-of-band"><aclass="src"href="../../src/os/mm/mod.rs.html#1-26">source</a> · <buttonid="toggle-all-docs"title="collapse all docs">[<span>−</span>]</button></span></div><detailsclass="toggle top-doc"open><summaryclass="hideme"><span>Expand description</span></summary><divclass="docblock"><p>Memory management implementation</p>
</div></details><h2id="reexports"class="section-header">Re-exports<ahref="#reexports"class="anchor">§</a></h2><ulclass="item-table"><li><divclass="item-name"id="reexport.KERNEL_SPACE"><code>pub use memory_set::<aclass="struct"href="memory_set/struct.KERNEL_SPACE.html"title="struct os::mm::memory_set::KERNEL_SPACE">KERNEL_SPACE</a>;</code></div></li><li><divclass="item-name"id="reexport.KERNEL_SPACE-1"><code>pub use memory_set::KERNEL_SPACE;</code></div></li></ul><h2id="modules"class="section-header">Modules<ahref="#modules"class="anchor">§</a></h2><ulclass="item-table"><li><divclass="item-name"><aclass="mod"href="address/index.html"title="mod os::mm::address">address</a><spantitle="Restricted Visibility"> 🔒</span></div><divclass="desc docblock-short">Implementation of physical and virtual address and page number.</div></li><li><divclass="item-name"><aclass="mod"href="frame_allocator/index.html"title="mod os::mm::frame_allocator">frame_allocator</a><spantitle="Restricted Visibility"> 🔒</span></div><divclass="desc docblock-short">Implementation of <ahref="frame_allocator/trait.FrameAllocator.html"title="trait os::mm::frame_allocator::FrameAllocator"><code>FrameAllocator</code></a> which
controls all the frames in the operating system.</div></li><li><divclass="item-name"><aclass="mod"href="heap_allocator/index.html"title="mod os::mm::heap_allocator">heap_allocator</a><spantitle="Restricted Visibility"> 🔒</span></div><divclass="desc docblock-short">The global allocator</div></li><li><divclass="item-name"><aclass="mod"href="memory_set/index.html"title="mod os::mm::memory_set">memory_set</a><spantitle="Restricted Visibility"> 🔒</span></div><divclass="desc docblock-short">Implementation of <ahref="memory_set/struct.MapArea.html"title="struct os::mm::memory_set::MapArea"><code>MapArea</code></a> and <ahref="memory_set/struct.MemorySet.html"title="struct os::mm::memory_set::MemorySet"><code>MemorySet</code></a>.</div></li><li><divclass="item-name"><aclass="mod"href="page_table/index.html"title="mod os::mm::page_table">page_table</a><spantitle="Restricted Visibility"> 🔒</span></div><divclass="desc docblock-short">Implementation of <ahref="page_table/struct.PageTableEntry.html"title="struct os::mm::page_table::PageTableEntry"><code>PageTableEntry</code></a> and <ahref="page_table/struct.PageTable.html"title="struct os::mm::page_table::PageTable"><code>PageTable</code></a>.</div></li></ul><h2id="structs"class="section-header">Structs<ahref="#structs"class="anchor">§</a></h2><ulclass="item-table"><li><divclass="item-name"><aclass="struct"href="struct.FrameTracker.html"title="struct os::mm::FrameTracker">FrameTracker</a></div><divclass="desc docblock-short">manage a frame which has the same lifecycle as the tracker</div></li><li><divclass="item-name"><aclass="struct"href="struct.KERNEL_SPACE.html"title="struct os::mm::KERNEL_SPACE">KERNEL_SPACE</a></div><divclass="desc docblock-short">a memory set instance through lazy_static! managing kernel space</div></li><li><divclass="item-name"><aclass="struct"href="struct.MapPermission.html"title="struct os::mm::MapPermission">MapPermission</a></div><divclass="desc docblock-short">map permission corresponding to that in pte: <code>R W X U</code></div></li><li><divclass="item-name"><aclass="struct"href="struct.MemorySet.html"title="struct os::mm::MemorySet">MemorySet</a></div><divclass="desc docblock-short">memory set structure, controls virtual-memory space</div></li><li><divclass="item-name"><aclass="struct"href="struct.PageTableEntry.html"title="struct os::mm::PageTableEntry">PageTableEntry</a></div><divclass="desc docblock-short">page table entry structure</div></li><li><divclass="item-name"><aclass="struct"href="struct.PhysAddr.html"title="struct os::mm::PhysAddr">PhysAddr</a></div><divclass="desc docblock-short">physical address</div></li><li><divclass="item-name"><aclass="struct"href="struct.PhysPageNum.html"title="struct os::mm::PhysPageNum">PhysPageNum</a></div><divclass="desc docblock-short">physical page number</div></li><li><divclass="item-name"><aclass="struct"href="struct.VirtAddr.html"title="struct os::mm::VirtAddr">VirtAddr</a></div><divclass="desc docblock-short">virtual address</div></li><li><divclass="item-name"><aclass="struct"href="struct.VirtPageNum.html"title="struct os::mm::VirtPageNum">VirtPageNum</a></div><divclass="desc docblock-short">virtual page number</div></li></ul><h2id="functions"class="section-header">Functions<ahref="#functions"class="anchor">§</a></h2><ulclass="item-table"><li><divclass="item-name"><aclass="fn"href="fn.frame_alloc.html"title="fn os::mm::frame_alloc">frame_alloc</a></div><divclass="desc docblock-short">allocate a frame</div></li><li><divclass="item-name"><aclass="fn"href="fn.init.html"title="fn os::mm::init">init</a></div><divclass="desc docblock-short">initiate heap allocator, frame allocator and kernel space</div></li><li><divclass="item-name"><aclass="fn"href="fn.remap_test.html"title="fn os::mm::remap_test">remap_test</a></div><divclass="desc docblock-short">Check PageTable running correctly</div></li><li><divclass="item-name"><aclass="fn"href="fn.translated_byte_buffer.html"title="fnos::mm:
