[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: [Xen-devel] [PATCH] libxc: refactor memory allocation functions

On Tue, 2015-12-01 at 12:03 +0000, Wei Liu wrote:
> > > We don't have INVALID_PFN, maybe we need one?
> > 
> > We have INVALID_MFN and INVALID_P2M_ENTRY, not sure if the latter fits the
> > bill (or if not how it is distinct from the former).
> > 
> Yeah, I'm aware of those but they don't seem to fit because they are
> used in MFN space.

Right, I wasn't sure about the latter, since given a P2M_ENTRY is an MFN I
then don't see how/why it is distinct from INVALID_MFN. Perhaps I'm missing
something (guest p2m width perhaps?), or maybe it's just historical


Xen-devel mailing list



Lists.xenproject.org is hosted with RackSpace, monitoring our
servers 24x7x365 and backed by RackSpace's Fanatical Support®.