Date: Wed, 13 Aug 2014 14:20:19 -0700 From: Peter Grehan <grehan@freebsd.org> To: Arthur Mesh <amesh@juniper.net> Cc: freebsd-virtualization@freebsd.org Subject: Re: bhyve userboot -- lack of inb()/outb() in ficl Message-ID: <53EBD693.5080407@freebsd.org> In-Reply-To: <20140813191947.GO73055@juniper.net> References: <20140813191947.GO73055@juniper.net>
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Hi Arthur, > I noticed that userboot doesn't contain inb()/outb() bindings: > > from loader(8): > inb (port -- char) > Reads a byte from a port. > > outb (port char --) > Writes a byte to a port. > > > Yet, manual page for bhyveload(8) claims: > > bhyveload is based on loader(8) and will present an interface identical > to the FreeBSD loader on the user's terminal. > > > Is there any interest in adding this functionality? It won't work for bhyveload/userboot - the VM isn't actually running at that point so there's nowhere for the commands to go. I also don't think these commands are supported on non-x86 loaders either, so it could be claimed an issue with the man page :) I can put some text in the bhyveload man page to indicate that not all x86 commands are supported (smap, pnpscan etc). Were you looking at using inb/outb for anything in particular ? later, Peter.
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