From: Ian Campbell <ian.campbell@citrix.com>
To: Andrew Cooper <andrew.cooper3@citrix.com>,
xen-devel@lists.xen.org, jbeulich@suse.com
Subject: Re: [PATCH DOCDAY] xen: write a high level description of the sub-arch choices for heap layout
Date: Wed, 30 Sep 2015 12:31:50 +0100 [thread overview]
Message-ID: <1443612710.16718.189.camel@citrix.com> (raw)
In-Reply-To: <560BC30E.4050507@citrix.com>
On Wed, 2015-09-30 at 12:10 +0100, Andrew Cooper wrote:
> > + *
> > + * Xen heap pages are always anonymous (that is, not tied
> > + * or accounted to any particular domain).
> > + *
> > + * - Dom heap: Memory which must be explicitly mapped, usually
> > + * transiently with map_domain_page, in order to be
> > + * used. va() and pa() are not valid for such memory.
>
> While stashing pointers into domheap memory is definitely buggy.
Is this true even considering the result of e.g. map_domain_page_global?
next prev parent reply other threads:[~2015-09-30 11:31 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-09-30 10:22 [PATCH DOCDAY] xen: write a high level description of the sub-arch choices for heap layout Ian Campbell
2015-09-30 10:33 ` Jan Beulich
2015-09-30 10:53 ` Ian Campbell
2015-09-30 11:10 ` Andrew Cooper
2015-09-30 11:28 ` Ian Campbell
2015-09-30 11:29 ` Andrew Cooper
2015-09-30 11:31 ` Ian Campbell [this message]
2015-09-30 11:37 ` Andrew Cooper
2015-09-30 11:39 ` Jan Beulich
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