cvs commit: src/sys/conf kern.post.mk kmod.mk

[Ruslan Ermilov]

On Thu, Oct 27, 2005 at 10:42:44PM +0200, Dag-Erling Sm?rgrav wrote:
> Now I'm even more confused - I just built and installed a kernel using
> yesterday's sources (kern.post.mk 1.86, kmod.mk 1.197); the modules
> that were installed have debugging symbols, and work flawlessly, which
> contradicts your commit logs.
> 
> What problem are you trying to solve?
> 
On amd64, different format module objects are used.  When loading
modules with debugging, they consume much more space than
non-debug versions:

hammer# pwd
/usr/src/sys/modules/if_tun
hammer# make DEBUG_FLAGS=-g -s
hammer# kldload ./if_tun.ko
hammer# kldstat |grep if_tun
14    1 0xffffffffa7b76000 1f6d     if_tun.ko
hammer# kldunload if_tun.ko
hammer# kldload ./if_tun.ko.debug
hammer# kldstat | grep if_tun
14    1 0xffffffffa7beb000 ad77     if_tun.ko.debug

Note the difference in the 4th field.  Also, such modules have
currently unsupported relocation type, R_X86_64_32, which is
easy to fix if needs be.


Cheers,
-- 
Ruslan Ermilov
ru at FreeBSD.org
FreeBSD committer
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