Date: Mon, 12 Jul 2010 10:13:30 -0400 From: John Baldwin <jhb@freebsd.org> To: Alexandre Fiveg <afiveg@freebsd.org> Cc: Perforce Change Reviews <perforce@freebsd.org> Subject: Re: PERFORCE change 180741 for review Message-ID: <201007121013.30769.jhb@freebsd.org> In-Reply-To: <201007110309.o6B39Lr2057896@repoman.freebsd.org> References: <201007110309.o6B39Lr2057896@repoman.freebsd.org>
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On Saturday, July 10, 2010 11:09:21 pm Alexandre Fiveg wrote: > http://p4web.freebsd.org/@@180741?ac=10 > > Change 180741 by afiveg@cottonmouth on 2010/07/11 03:08:49 > > d_mmap is eliminated from ringmap because of very strange behavior. Now: user-space process calls read(/dev/ringmap ... ) in order get physical addres of ring. Then by calling mmap(/dev/mem, .... , offset=ring_phys_addr) the ring will be mapped into user-space. Oof, this is not appropriate. You should use d_mmap. Can you provide more details on the problems you see with d_mmap? -- John Baldwin
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