Date: Tue, 26 Aug 1997 10:31:25 -0400 (EDT) From: Peter Dufault <dufault@hda.com> To: julian@whistle.com (Julian Elischer) Cc: hackers@freebsd.org Subject: Re: special malloc needs... Message-ID: <199708261431.KAA00906@hda.hda.com> In-Reply-To: <Pine.BSF.3.95.970825221211.8912E-100000@current1.whistle.com> from Julian Elischer at "Aug 25, 97 10:13:35 pm"
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> There is only one way I can think of doing what is requested.. > > write a silly little pseudo device that allocates a couple of meg > of physical contig ram at startup > > mmap it into your address space.. Exactly. And it isn't a stupid question - you may want to play around with some hardware from user space. May as well have a common mmap against "/dev/contig". You're still a lot better off in a user space sandbox than an LKM. The problem is the abuse this could engender from people foolishly fragmenting memory, etc. -- Peter Dufault (dufault@hda.com) Realtime development, Machine control, HD Associates, Inc. Safety critical systems, Agency approval
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