Date: Mon, 17 Oct 2005 23:21:55 +0000 (UTC) From: Peter Wemm <peter@FreeBSD.org> To: src-committers@FreeBSD.org, cvs-src@FreeBSD.org, cvs-all@FreeBSD.org Subject: cvs commit: src/sys/kern link_elf.c Message-ID: <200510172321.j9HNLtNJ013650@repoman.freebsd.org>
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peter 2005-10-17 23:21:55 UTC
FreeBSD src repository
Modified files:
sys/kern link_elf.c
Log:
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.
Revision Changes Path
1.85 +9 -6 src/sys/kern/link_elf.c
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