Date: Thu, 7 Nov 2002 16:00:01 +0000 From: Christoph Hellwig <hch@infradead.org> To: John Baldwin <jhb@FreeBSD.org> Cc: freebsd-hackers@FreeBSD.ORG, Julien Mabillard <jmab@gve.ch> Subject: Re: sio i/o Message-ID: <20021107160001.A30953@infradead.org> In-Reply-To: <XFMail.20021107105131.jhb@FreeBSD.org>; from jhb@FreeBSD.org on Thu, Nov 07, 2002 at 10:51:31AM -0500 References: <20021107150542.A28917@infradead.org> <XFMail.20021107105131.jhb@FreeBSD.org>
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On Thu, Nov 07, 2002 at 10:51:31AM -0500, John Baldwin wrote: > Doing I/O from userland generally isn't supported. A header with <sys/> > is a kernel header though, not a userland one. :) Only on traditional Unix systems. On Linux it never is. > For i386-only, if > you do the right calls to obtain permission to do I/O, the functions > in machine/cpufunc.h should work however. Of course you need the permission on linux aswell, and again only a small number of ports actually supports it. It's generally discuraged. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
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