bhyve userboot -- lack of inb()/outb() in ficl
grehan at freebsd.org
Wed Aug 13 21:20:32 UTC 2014
> 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 ?
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