<p>This PR fixes a long-standing accounting bug preventing large images from being downloaded.</p>

<hr>

<h4>You can view, comment on, or merge this pull request online at:</h4>
<p>  <a href='https://github.com/ipxe/ipxe/pull/105'>https://github.com/ipxe/ipxe/pull/105</a></p>

<h4>Commit Summary</h4>
<ul>
  <li>memtop_umalloc: fix "out of memory" detection when expanding bottom arena</li>
  <li>memtop_umalloc: take alignment into account when checking boundaries</li>
</ul>

<h4>File Changes</h4>
<ul>
  <li>
    <strong>M</strong>
    <a href="https://github.com/ipxe/ipxe/pull/105/files#diff-0">src/arch/x86/interface/pcbios/memtop_umalloc.c</a>
    (8)
  </li>
</ul>

<h4>Patch Links:</h4>
<ul>
  <li><a href='https://github.com/ipxe/ipxe/pull/105.patch'>https://github.com/ipxe/ipxe/pull/105.patch</a></li>
  <li><a href='https://github.com/ipxe/ipxe/pull/105.diff'>https://github.com/ipxe/ipxe/pull/105.diff</a></li>
</ul>

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