Date: Wed, 3 May 1995 23:58:12 +0200 (MET DST) From: J Wunsch <j@uriah.heep.sax.de> To: babkin@hq.icb.chel.su (Serge A. Babkin) Cc: hackers@FreeBSD.org Subject: Re: How to allocate kernel address space ? Message-ID: <199505032158.XAA20768@uriah.heep.sax.de> In-Reply-To: <199505031211.RAA08593@hq.icb.chel.su> from "Serge A. Babkin" at May 3, 95 05:11:22 pm
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As Serge A. Babkin wrote: > > Is there any function for allocating of kernel address space (not > memory but address space for device's memory) ? I studied the > existing drivers and I found that they assume that virtual > address space in kernel mode is equal to the physical one. I think the ``ISA hole'' (0xa0000 - 0xfffff) is pre-mapped. For everything else, you will have to map it yourself. Our VM guys will certainly be of more help... -- cheers, J"org joerg_wunsch@uriah.heep.sax.de -- http://www.sax.de/~joerg/ Never trust an operating system you don't have sources for. ;-)
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