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H A Dlink_elf.cdiff 151430 Mon Oct 17 23:21:55 MDT 2005 peter Add support for kernel modules with a single PT_LOAD section.

While here, support up to four sections because it was trivial to do
and cheap. (One pointer per section).

For amd64 with "-fpic -shared" format .ko files, using a single PT_LOAD
section is important to avoid wasting about 1MB of KVM and physical ram
for the 'gap' between the two PT_LOAD sections. amd64 normally uses
.o format kld files and isn't affected normally. But -fpic -shared modules
are actually possible to produce and load... (And with a bugfix to
binutils, we can build and use plain -shared .ko files without -fpic)

i386 only wastes 4K per .ko file, so that isn't such a big deal there.

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