Date: Wed, 3 May 1995 17:11:22 +0500 (GMT+0500) From: "Serge A. Babkin" <babkin@hq.icb.chel.su> To: hackers@FreeBSD.org Subject: How to allocate kernel address space ? Message-ID: <199505031211.RAA08593@hq.icb.chel.su>
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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. But there is something strange: they convert physical addresses to virtual ones by simply assigning, but they convert virtual addresses to physical ones using kvtop(). Why ? For additional check ? Thank you for your answers. Serge Babkin ! (babkin@hq.icb.chel.su) ! Headquarter of Joint Stock Commercial Bank "Chelindbank" ! Chelyabinsk, Russia
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