Date: Tue, 02 Jun 1998 20:35:34 -0700 From: David Greenman <dg@root.com> To: "Chris Csanady" <cc@swing.ca.sandia.gov> Cc: freebsd-hackers@FreeBSD.ORG Subject: Re: VM Questions Message-ID: <199806030335.UAA19842@implode.root.com> In-Reply-To: Your message of "Tue, 02 Jun 1998 06:43:05 CDT." <199806021143.GAA12205@swing.ca.sandia.gov>
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>First, I was wondering if it is possible given a physical address, >to copy data to it from a virtual address. Or is a virtual mapping >necessary? There must be a virtual mapping. >The other question is how may I map user pages into the kernel? I've >looked through vm_map.c, and it seems that support for this is >lacking. To get around this for now, I am attempting to use almost >exclusively physical address--although am now sure how it will work >out. vm_map.c isn't really the right place to look. A better place would be physio/vmapbuf/vunmapbuf in kern_physio.c and vm_machdep.c. -DG David Greenman Co-founder/Principal Architect, The FreeBSD Project To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
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