ss.</td></tr></table>
<blockquote>
<p>1. Software is not required to check the HLE feature flag to use XACQUIRE or XRELEASE, as they are treated as regular prefix if HLE feature flag reports 0.</p></blockquote>
<h2 id="description">Description<a class="anchor" href="#description">
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		</a></h2>
<p>The XACQUIRE prefix is a hint to start lock elision on the memory address specified by the instruction and the XRELEASE prefix is a hint to end lock elision on the memory address specified by the instruction.<