On Thu, Nov 17, 2011 at 01:22:17PM -0700, Alex Williamson wrote: > On Wed, 2011-11-16 at 11:52 -0500, Konrad Rzeszutek Wilk wrote: > > On Fri, Nov 11, 2011 at 03:10:56PM -0700, Alex Williamson wrote: > > What would be the return value if somebody tried to unmask an edge one? > > Should that be documented here? -ENOSPEC? > > I would assume EINVAL or EFAULT since the user is providing an invalid > argument/bad address.
EINVAL. EFAULT is normally only used for when the user passes a bad virtual memory address to the kernel. This isn't an address at all, it's an index that points to an object for which this operation does not make sense. -Scott
