Date: Wed, 07 Jan 2009 12:48:10 -0700 (MST) From: "M. Warner Losh" <imp@bsdimp.com> To: rizzo@iet.unipi.it Cc: svn-src-head@freebsd.org, sobomax@freebsd.org, luigi@freebsd.org, src-committers@freebsd.org, svn-src-all@freebsd.org Subject: Re: svn: head/sys/i386/conf Message-ID: <20090107.124810.1933499588.imp@bsdimp.com> In-Reply-To: <20090106224658.GB3130@onelab2.iet.unipi.it> References: <200901061510.n06FAQ0g034585@svn.freebsd.org> <4963D4E9.707@FreeBSD.org> <20090106224658.GB3130@onelab2.iet.unipi.it>
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In message: <20090106224658.GB3130@onelab2.iet.unipi.it>
Luigi Rizzo <rizzo@iet.unipi.it> writes:
: On Tue, Jan 06, 2009 at 02:02:17PM -0800, Maxim Sobolev wrote:
: > Luigi Rizzo wrote:
: > >+# through getenv() (or kenv(1) in userland). The format of the file
: > >+# is 'variable=value' , same as for hints files.
: >
: > What do you think about extending comment with the following:
: >
: > "hints files" -> "hints or loader.conf(5) files".
:
: i don't know -- in fact, I have a curiosity here:
: loader.conf is processed by some code in loader.4th which in turn
: is interpreted by loader.conf, and this chain does some magic
: on certain variable names (and can also do $variable expansion).
:
: Instead, I believe that 'hints' (and presumably 'env' values) are
: passed directly to the kernel, so there are no special manipulation
: of variable names or values. Is that correct ?
hints are either compiled into the kernel, or are loaded into the
kernel environment by reading /boot/device.hints. There's nothing
really magical about it. You could put all your hints into
/boot/loader.conf if you wanted... If you compile them directly into
the kernel, the loader can't help...
Warner
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