Date: Fri, 15 Sep 2006 10:35:11 -0400 From: John Baldwin <jhb@freebsd.org> To: freebsd-arch@freebsd.org Cc: LI Xin <delphij@delphij.net> Subject: Re: How to map a page with userland program? Message-ID: <200609151035.12069.jhb@freebsd.org> In-Reply-To: <450AB80B.1050100@delphij.net> References: <450AB80B.1050100@delphij.net>
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On Friday 15 September 2006 10:26, LI Xin wrote: > Dear folks, > > Is there a continent and MI way to map a kernel page into userland > address space under the same virtual address? It seems that this can be > implemented through some routines in MD part of pmap, but is it possible > to use higher level VM routines to do the job? Not to the same userland virtual address. Why do you need the same virtual address anyway? If it's for pointers use offsets relative to the start of the page instead. -- John Baldwin
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