From: Mukesh Rathor <mukesh.rathor@oracle.com>
To: Julien Grall <julien.grall@linaro.org>
Cc: Xen-devel@lists.xensource.com,
Ian Campbell <Ian.Campbell@citrix.com>,
Stefano Stabellini <stefano.stabellini@eu.citrix.com>,
george.dunlap@eu.citrix.com, tim@xen.org, keir.xen@gmail.com,
JBeulich@suse.com
Subject: Re: [V4 PATCH 6/7] pvh dom0: Add and remove foreign pages
Date: Tue, 3 Dec 2013 17:05:52 -0800 [thread overview]
Message-ID: <20131203170552.37c6426d@mantra.us.oracle.com> (raw)
In-Reply-To: <529E70B6.7060002@linaro.org>
On Wed, 04 Dec 2013 00:00:54 +0000
Julien Grall <julien.grall@linaro.org> wrote:
>
>
> On 12/03/2013 02:30 AM, Mukesh Rathor wrote:
> > In this patch, a new function, xenmem_add_foreign_to_pmap(), is
> > added
>
> xenmem_add_foreign_to_p2m?
>
> > to map pages from foreign guest into current dom0 for domU creation.
> > Such pages are typed p2m_map_foreign. Also, support is added here to
> > XENMEM_remove_from_physmap to remove such pages. Note, in the remove
> > path, we must release the refcount that was taken during the map
> > phase.
>
> Your remove path is very interesting for the ARM port. For now we are
> unable to unmap the foreign page because get_page() will always
> return NULL (as dom0 is not the owner).
>
> I will give a try on ARM to see if it could resolve our problem.
>
Don't know much about ARM, is the remove path failing to compile on it?
You can submit ARM modification patch after it's checked in?
thanks
mukesh
next prev parent reply other threads:[~2013-12-04 1:05 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-12-03 2:30 [V4 PATCH 0/7]: PVH dom0 Mukesh Rathor
2013-12-03 2:30 ` [V4 PATCH 1/7] PVH dom0: move some pv specific code to static functions Mukesh Rathor
2013-12-03 2:30 ` [V4 PATCH 2/7] dom0: construct_dom0 changes Mukesh Rathor
2013-12-04 15:28 ` Jan Beulich
2013-12-03 2:30 ` [V4 PATCH 3/7] PVH dom0: implement XENMEM_add_to_physmap_range for x86 Mukesh Rathor
2013-12-03 2:30 ` [V4 PATCH 4/7] PVH dom0: Introduce p2m_map_foreign Mukesh Rathor
2013-12-03 2:30 ` [V4 PATCH 5/7] pvh: change xsm_add_to_physmap Mukesh Rathor
2013-12-03 2:30 ` [V4 PATCH 6/7] pvh dom0: Add and remove foreign pages Mukesh Rathor
2013-12-04 0:00 ` Julien Grall
2013-12-04 1:05 ` Mukesh Rathor [this message]
2013-12-04 9:44 ` Ian Campbell
2013-12-04 10:56 ` Stefano Stabellini
2013-12-04 17:00 ` Julien Grall
2013-12-05 1:40 ` Mukesh Rathor
2013-12-05 12:31 ` Julien Grall
2013-12-04 9:43 ` Ian Campbell
2013-12-05 2:09 ` Mukesh Rathor
2013-12-03 2:30 ` [V4 PATCH 7/7] pvh dom0: add opt_dom0pvh to setup.c Mukesh Rathor
2013-12-04 15:37 ` [V4 PATCH 0/7]: PVH dom0 Jan Beulich
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