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-<table class="head">
- <tr>
- <td class="head-ltitle">PMAP(9)</td>
- <td class="head-vol">Kernel Developer's Manual</td>
- <td class="head-rtitle">PMAP(9)</td>
- </tr>
-</table>
-<div class="manual-text">
-<section class="Sh">
-<h1 class="Sh" id="NAME"><a class="permalink" href="#NAME">NAME</a></h1>
-<p class="Pp"><code class="Nm">pmap</code> &#x2014;
- <span class="Nd">machine-dependent portion of virtual memory
- subsystem</span></p>
-</section>
-<section class="Sh">
-<h1 class="Sh" id="SYNOPSIS"><a class="permalink" href="#SYNOPSIS">SYNOPSIS</a></h1>
-<p class="Pp"><code class="In">#include
- &lt;<a class="In">sys/param.h</a>&gt;</code>
- <br/>
- <code class="In">#include &lt;<a class="In">vm/vm.h</a>&gt;</code>
- <br/>
- <code class="In">#include &lt;<a class="In">vm/pmap.h</a>&gt;</code></p>
-</section>
-<section class="Sh">
-<h1 class="Sh" id="DESCRIPTION"><a class="permalink" href="#DESCRIPTION">DESCRIPTION</a></h1>
-<p class="Pp">The <code class="Nm">pmap</code> module is the machine-dependent
- portion of the <span class="Ux">FreeBSD</span> VM (Virtual Memory)
- sub-system. Each function documented herein must have its own
- architecture-dependent implementation.</p>
-<p class="Pp">The <code class="Nm">pmap</code> module is responsible for
- managing hardware-dependent objects such as page tables, address maps, TLBs,
- etc.</p>
-<p class="Pp">Machine-dependent code must provide the header file
- <code class="In">&lt;<a class="In">machine/pmap.h</a>&gt;</code>. This file
- contains the definition of the <var class="Vt">pmap</var> structure:</p>
-<div class="Bd Pp Bd-indent Li">
-<pre>struct pmap {
- /* Contents defined by pmap implementation. */
-};
-typedef struct pmap *pmap_t;</pre>
-</div>
-<p class="Pp">This header file may also define other data structures used by the
- <code class="Nm">pmap</code> implementation.</p>
-<p class="Pp">The header file
- <code class="In">&lt;<a class="In">vm/pmap.h</a>&gt;</code> defines a
- structure for tracking <code class="Nm">pmap</code> statistics (see below).
- This structure is defined as:</p>
-<div class="Bd Pp Bd-indent Li">
-<pre>struct pmap_statistics {
- long resident_count; /* number of mapped pages */
- long wired_count; /* number of wired pages */
-};</pre>
-</div>
-<p class="Pp">The implementation's <var class="Vt">struct pmap</var> must
- contain an instance of this structure having the name
- <var class="Va">pm_stats</var>, and it must be updated by the implementation
- after each relevant <code class="Nm">pmap</code> operation.</p>
-</section>
-<section class="Sh">
-<h1 class="Sh" id="SEE_ALSO"><a class="permalink" href="#SEE_ALSO">SEE
- ALSO</a></h1>
-<p class="Pp"><a class="Xr">pmap_activate(9)</a>,
- <a class="Xr">pmap_clear_modify(9)</a>, <a class="Xr">pmap_copy(9)</a>,
- <a class="Xr">pmap_copy_page(9)</a>, <a class="Xr">pmap_enter(9)</a>,
- <a class="Xr">pmap_extract(9)</a>,
- <a class="Xr">pmap_extract_and_hold(9)</a>,
- <a class="Xr">pmap_growkernel(9)</a>, <a class="Xr">pmap_init(9)</a>,
- <a class="Xr">pmap_is_modified(9)</a>,
- <a class="Xr">pmap_is_prefaultable(9)</a>,
- <a class="Xr">pmap_kextract(9)</a>, <a class="Xr">pmap_map(9)</a>,
- <a class="Xr">pmap_mincore(9)</a>, <a class="Xr">pmap_object_init_pt(9)</a>,
- <a class="Xr">pmap_page_exists_quick(9)</a>,
- <a class="Xr">pmap_page_init(9)</a>, <a class="Xr">pmap_pinit(9)</a>,
- <a class="Xr">pmap_pinit0(9)</a>, <a class="Xr">pmap_protect(9)</a>,
- <a class="Xr">pmap_qenter(9)</a>, <a class="Xr">pmap_qremove(9)</a>,
- <a class="Xr">pmap_quick_enter_page(9)</a>,
- <a class="Xr">pmap_quick_remove_page(9)</a>,
- <a class="Xr">pmap_release(9)</a>, <a class="Xr">pmap_remove(9)</a>,
- <a class="Xr">pmap_remove_all(9)</a>,
- <a class="Xr">pmap_remove_pages(9)</a>,
- <a class="Xr">pmap_resident_count(9)</a>,
- <a class="Xr">pmap_ts_referenced(9)</a>, <a class="Xr">pmap_unwire(9)</a>,
- <a class="Xr">pmap_wired_count(9)</a>, <a class="Xr">pmap_zero_area(9)</a>,
- <a class="Xr">pmap_zero_page(9)</a>, <a class="Xr">vm_map(9)</a></p>
-</section>
-<section class="Sh">
-<h1 class="Sh" id="AUTHORS"><a class="permalink" href="#AUTHORS">AUTHORS</a></h1>
-<p class="Pp">This manual page was written by <span class="An">Bruce M
- Simpson</span>
- &lt;<a class="Mt" href="mailto:bms@spc.org">bms@spc.org</a>&gt;.</p>
-</section>
-</div>
-<table class="foot">
- <tr>
- <td class="foot-date">January 12, 2024</td>
- <td class="foot-os">FreeBSD 15.0</td>
- </tr>
-</table>