Date: Sat, 3 Jan 2009 01:50:40 +0100 From: Luigi Rizzo <rizzo@iet.unipi.it> To: "M. Warner Losh" <imp@bsdimp.com> Cc: current@FreeBSD.org Subject: Re: RFC: new utility, kmodpatch Message-ID: <20090103005040.GA64606@onelab2.iet.unipi.it> In-Reply-To: <20090102.163308.-1929116900.imp@bsdimp.com> References: <20090101183026.GA15385@onelab2.iet.unipi.it> <20090102.115022.1102529931.imp@bsdimp.com> <20090102210133.GA57653@onelab2.iet.unipi.it> <20090102.163308.-1929116900.imp@bsdimp.com>
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On Fri, Jan 02, 2009 at 04:33:08PM -0700, M. Warner Losh wrote:
> In message: <20090102210133.GA57653@onelab2.iet.unipi.it>
> Luigi Rizzo <rizzo@iet.unipi.it> writes:
...
> : The usage model I expect is that people will be told something like this
> :
> : To support the BenQ T33 phone on FreeBSD/i386 6.x or 7.x do
> : kmodpatch -t "umass.ko umass_devdescrs 4 4 4 2" - - @0 0x4050 0x4a5 0x0101 0x4200
> :
> : to support the Asus M2N-Vm DVI MCP67 ethernet on FreeBSD/i386 7.x do
> : kmodpatch -t "if_nfe.ko nfe_devs 2 2 s" - - @0 0x10de 0x54c -
> : and please note TX flow control does not work
>
> This is a good interface for our users?
i don't know -- in the end it is
"if you trust me, cut&paste this line into a root shell"
which I believe is simpler than
"if you trust me, apply this patch, rebuild the kernel and reinstall"
> It is interesting technology, I'm not sure it is the right tool for
> the device aliasing...
> It does require some extra care to introduce duplicate entries into
> the table, or reserve space.
or just overwrite some entry that is unused in your setting,
which again does not work in 100% of the cases but it is very
close to that.
> With proper aliasing, we could publish
> one big file that has all the new aliases since the last release and
> there'd be no need to modify the leaf drivers. With these
in principle yes, though that i expect that the source of info is not
freebsd.org (which often does not have a chance to check/try
whether an alias is correct), but rather mailing lists or other users
which happen to have the same device and tried it.
cheers
luigi
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