1<html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><title>i915_gem_object_save_bit_17_swizzle</title><meta name="generator" content="DocBook XSL Stylesheets V1.78.1"><link rel="home" href="index.html" title="Linux GPU Driver Developer's Guide"><link rel="up" href="ch04s03.html#id-1.4.3.5.7" title="GTT Fences and Swizzling"><link rel="prev" href="API-i915-gem-object-do-bit-17-swizzle.html" title="i915_gem_object_do_bit_17_swizzle"><link rel="next" href="API-i915-gem-set-tiling.html" title="i915_gem_set_tiling"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center"><span class="phrase">i915_gem_object_save_bit_17_swizzle</span></th></tr><tr><td width="20%" align="left"><a accesskey="p" href="API-i915-gem-object-do-bit-17-swizzle.html">Prev</a> </td><th width="60%" align="center">GTT Fences and Swizzling</th><td width="20%" align="right"> <a accesskey="n" href="API-i915-gem-set-tiling.html">Next</a></td></tr></table><hr></div><div class="refentry"><a name="API-i915-gem-object-save-bit-17-swizzle"></a><div class="titlepage"></div><div class="refnamediv"><h2>Name</h2><p>i915_gem_object_save_bit_17_swizzle — 
2     save bit 17 swizzling
3 </p></div><div class="refsynopsisdiv"><h2>Synopsis</h2><div class="funcsynopsis"><table border="0" class="funcprototype-table" summary="Function synopsis" style="cellspacing: 0; cellpadding: 0;"><tr><td><code class="funcdef">void <b class="fsfunc">i915_gem_object_save_bit_17_swizzle </b>(</code></td><td>struct drm_i915_gem_object * <var class="pdparam">obj</var><code>)</code>;</td></tr></table><div class="funcprototype-spacer"> </div></div></div><div class="refsect1"><a name="id-1.4.3.5.7.9.5"></a><h2>Arguments</h2><div class="variablelist"><dl class="variablelist"><dt><span class="term"><em class="parameter"><code>obj</code></em></span></dt><dd><p>
4     i915 GEM buffer object
5    </p></dd></dl></div></div><div class="refsect1"><a name="id-1.4.3.5.7.9.6"></a><h2>Description</h2><p>
6   This function saves the bit 17 of each page frame number so that swizzling
7   can be fixed up later on with <code class="function"><a class="link" href="API-i915-gem-object-do-bit-17-swizzle.html" title="i915_gem_object_do_bit_17_swizzle">i915_gem_object_do_bit_17_swizzle</a></code>. This must
8   be called before the backing storage can be unpinned.
9</p></div></div><div class="navfooter"><hr><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="API-i915-gem-object-do-bit-17-swizzle.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="ch04s03.html#id-1.4.3.5.7">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="API-i915-gem-set-tiling.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top"><span class="phrase">i915_gem_object_do_bit_17_swizzle</span> </td><td width="20%" align="center"><a accesskey="h" href="index.html">Home</a></td><td width="40%" align="right" valign="top"> <span class="phrase">i915_gem_set_tiling</span></td></tr></table></div></body></html>
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