From: David Vrabel <david.vrabel@citrix.com>
To: hanji unit <hanjiunit@gmail.com>,
"xen-devel@lists.xen.org" <xen-devel@lists.xen.org>
Subject: Re: Memory Sharing
Date: Fri, 5 Feb 2016 10:40:56 +0000 [thread overview]
Message-ID: <56B47C38.5020707@citrix.com> (raw)
In-Reply-To: <CA+J4q6cvuAhpzoANBvpvKmFNeCAM58u0uRX9h1U8n12_u=5bDg@mail.gmail.com>
On 04/02/16 21:04, hanji unit wrote:
> Hello, does Xen support sharing memory pages between multiple domains
> (such as as Dom0, DomU1, DomU2)? The Grant Table hypercalls seem
> limited to:
>
> IOCTL_GNTALLOC_ALLOC_GREF
> IOCTL_GNTALLOC_DEALLOC_GREF
> IOCTL_GNTALLOC_SET_UNMAP_NOTIFY
These are the ioctls provided by the gntalloc driver. The grant table
mechanism itself can share any page of guest memory.
If you need to share an already allocated page of userspace memory, the
gntalloc driver would need to be extended with a new ioctl.
David
next prev parent reply other threads:[~2016-02-05 10:40 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-02-04 21:04 Memory Sharing hanji unit
2016-02-05 0:29 ` Tamas K Lengyel
2016-02-05 10:40 ` David Vrabel [this message]
-- strict thread matches above, loose matches on Subject: below --
2016-04-18 16:19 memory sharing sepanta s
2011-07-26 7:33 Memory Sharing Lakshitha Harshan
2011-07-26 9:51 ` Tim Deegan
2011-06-16 14:15 Lakshitha Harshan
2011-06-19 23:34 ` Jui-Hao Chiang
2011-06-14 5:04 Lakshitha Harshan
2011-06-14 8:10 ` Tim Deegan
2011-06-01 3:45 Lakshitha Harshan
2011-06-01 9:46 ` Tim Deegan
2011-05-24 7:17 Lakshitha Harshan
2011-05-24 9:19 ` Tim Deegan
2011-05-03 4:49 Lakshitha Harshan
2011-05-03 12:05 ` Tim Deegan
2011-04-26 9:52 Lakshitha Harshan
2011-04-09 6:37 Lakshitha Harshan
2011-04-09 8:36 ` Keir Fraser
2011-04-03 8:28 Memory sharing Lakshitha Harshan
2011-04-03 8:58 ` Keir Fraser
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=56B47C38.5020707@citrix.com \
--to=david.vrabel@citrix.com \
--cc=hanjiunit@gmail.com \
--cc=xen-devel@lists.xen.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.