Re: [PATCH] virtio config_ops refactoring

[Rusty Russell]

On Thursday 08 November 2007 04:30:50 Anthony Liguori wrote:
> I would prefer that the virtio API not expose a little endian standard.
> I'm currently converting config->get() ops to ioreadXX depending on the
> size which already does the endianness conversion for me so this just
> messes things up.  I think it's better to let the backend deal with
> endianness since it's trivial to handle for both the PCI backend and the
> lguest backend (lguest doesn't need to do any endianness conversion).

-ETOOMUCHMAGIC.  We should either expose all the XX interfaces (but this isn't 
a high-speed interface, so let's not) or not "sometimes" convert endianness.  
Getting surprises because a field happens to be packed into 4 bytes is 
counter-intuitive.

Since your most trivial implementation is to do a byte at a time, I don't 
think you have a good argument on that basis either.

Cheers,
Rusty.

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/