From: Ian Campbell <ian.campbell@citrix.com>
To: Wei Liu <wei.liu2@citrix.com>
Cc: Juergen Gross <jgross@suse.com>,
Xen-devel <xen-devel@lists.xenproject.org>,
Ian Jackson <ian.jackson@eu.citrix.com>
Subject: Re: [PATCH] libxc: refactor memory allocation functions
Date: Tue, 1 Dec 2015 12:14:34 +0000 [thread overview]
Message-ID: <1448972074.15768.128.camel@citrix.com> (raw)
In-Reply-To: <20151201120316.GP21588@citrix.com>
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
baggage.
Ian.
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next prev parent reply other threads:[~2015-12-01 12:15 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-12-01 11:39 [PATCH] libxc: refactor memory allocation functions Wei Liu
2015-12-01 11:45 ` Juergen Gross
2015-12-01 12:38 ` Ian Campbell
2015-12-01 11:58 ` Ian Campbell
2015-12-01 12:03 ` Wei Liu
2015-12-01 12:14 ` Ian Campbell [this message]
2015-12-01 12:04 ` Juergen Gross
2015-12-01 12:12 ` Wei Liu
2015-12-01 14:08 ` Juergen Gross
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