From: Ian Campbell <ian.campbell@citrix.com>
To: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Cc: Keir Fraser <keir@xen.org>,
Ian Jackson <ian.jackson@eu.citrix.com>,
Oleksandr Dmytryshyn <oleksandr.dmytryshyn@globallogic.com>,
Tim Deegan <tim@xen.org>, xen-devel <xen-devel@lists.xen.org>,
Stefano Stabellini <stefano.stabellini@citrix.com>,
Jan Beulich <jbeulich@suse.com>
Subject: Re: Question about mapping between domains
Date: Wed, 15 Jul 2015 13:00:58 +0100 [thread overview]
Message-ID: <1436961658.32371.20.camel@citrix.com> (raw)
In-Reply-To: <alpine.DEB.2.02.1507151248180.17378@kaball.uk.xensource.com>
On Wed, 2015-07-15 at 12:51 +0100, Stefano Stabellini wrote:
> On Wed, 15 Jul 2015, Oleksandr Dmytryshyn wrote:
> > Hi, Ian. Thank You for the response.
> >
> > > Look at how the balloon driver does it, the hypercalls you want are
> > > XENMEM_(increase|decrease)_reservation.
> > I'll try to use those hypercalls.
>
> In the modern Linux kernels, you just need to call gnttab_alloc_pages
> (see drivers/xen/grant-table.c:gnttab_alloc_pages).
The problem here is to grant map pages to fill and existing buffer which
is already allocated/supplied elswhere (in the GPU stack I suppose).
next prev parent reply other threads:[~2015-07-15 12:00 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-07-09 13:31 Question about mapping between domains Oleksandr Dmytryshyn
2015-07-13 9:04 ` Ian Campbell
2015-07-14 15:31 ` Oleksandr Dmytryshyn
2015-07-14 15:41 ` Oleksandr Dmytryshyn
2015-07-14 15:50 ` Ian Campbell
2015-07-15 8:28 ` Oleksandr Dmytryshyn
2015-07-15 11:51 ` Stefano Stabellini
2015-07-15 12:00 ` Ian Campbell [this message]
2015-07-14 15:49 ` Ian Campbell
2015-07-17 7:43 ` Oleksandr Dmytryshyn
2015-07-17 8:59 ` Ian Campbell
2015-07-22 12:07 ` Oleksandr Dmytryshyn
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