Date: Sun, 14 Jun 2015 18:24:18 +0200 From: Polytropon <freebsd@edvax.de> To: tak.official@gmail.com Cc: FreeBSD Questions <freebsd-questions@freebsd.org> Subject: Re: reload kernel without reboot? Message-ID: <20150614182418.56857acc.freebsd@edvax.de> In-Reply-To: <CAPkyVLwy_cW9fuY4CLgGtXKcLb7qeLNk9VdiHQA3OYy-rbq6ew@mail.gmail.com> References: <CAPkyVLwy_cW9fuY4CLgGtXKcLb7qeLNk9VdiHQA3OYy-rbq6ew@mail.gmail.com>
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On Sun, 14 Jun 2015 13:24:59 +0430, takCoder wrote: > my question is: Is there a way to reload freebsd kernel in which i don't > need to restart to apply the changes? Probably not, because the kernel is the first thing the OS boot mechanism will load, and this is required at the earliest stage of OS booting for the kernel to work as intended. What you would need is to change the kernel binary content (after source change and compile run) both on disk and in memory, with all its location references and dependency resolutions so the result parts will work consistently again. I'd say that's a very hard task, nearly impossible. However, if you are able to move the things you want to "dynamically load and unload" into kernel modules - there might be a solution for you. Kernel modules can be dealt with easily using kldload and kldunload. However, the kernel itself cannot be unloaded and reloaded with those tools. -- Polytropon Magdeburg, Germany Happy FreeBSD user since 4.0 Andra moi ennepe, Mousa, ...
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