Date: Fri, 30 Aug 2002 13:02:23 -0500 (CDT) From: mark tinguely <tinguely@web.cs.ndsu.nodak.edu> To: freebsd-questions@FreeBSD.ORG, pavan.balaji@intel.com Subject: RE: Virtual Address to Physical Address translation Message-ID: <200208301802.g7UI2No38272@web.cs.ndsu.nodak.edu> In-Reply-To: <3D386AED1B47D411A94300508B11F18704AD69CD@fmsmsx116.fm.intel.com>
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> The physical address in my context is that of some user space of a certain > process. I need to place incoming data into it. Now, the incoming data is in > the kernel virtual space, so I need a mechanism to copy this data to the > physical pages of the user space (which are pinned). Both kernel and user space addresses are virtual addresses, but we don't need to go there. To copy from kernel space to user space, use the routine copyout(9). To copy from user space into kernel space, use copyin(9). --mark tinguely. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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