Date: Wed, 8 Feb 2006 21:00:58 +0200 From: Giorgos Keramidas <keramida@ceid.upatras.gr> To: Dieter <freebsd@sopwith.solgatos.com> Cc: cpghost <cpghost@cordula.ws>, freebsd-questions@freebsd.org Subject: Re: [WISH] Linux kernel as drop-in replacement in FreeBSD? Message-ID: <20060208190058.GA2219@flame.pc> In-Reply-To: <200602081829.SAA13412@sopwith.solgatos.com> References: <20060208065405.GA11496@epia2.farid-hajji.net> <200602081829.SAA13412@sopwith.solgatos.com>
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On 2006-02-08 10:29, Dieter <freebsd@sopwith.solgatos.com> wrote: >>>> since Linux' support for some hardware is better than FreeBSD's, it >>>> would be nice to have an *optional* way of running a FreeBSD system >>>> (userland, including all third party programs) on top of the Linux >>>> kernel. >>> >>> I'd prefer to have a way to use a Linux device driver with a BSD >>> kernel. >> >> Of course, but if I understand drivers correctly, that would be >> nearly impossible... unless the interface between linux device >> drivers and the rest of the linux kernel consisted of a well defined >> API (perhaps it does, I don't know). Basically, a driver can access >> ANY data structure of the kernel, and that's why it's not trivial to >> combine a Linux driver with the FreeBSD kernel. > > If the driver is loaded with "modprobe", wouldn't that have a well > defined API? Only as far as loading & unloading is concerned. Once a driver gets loaded, even before module_load() finishes some times, the driver has full access to the guts of the kernel and can wreak havoc all over the place without any serious problem :) - Giorgos
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