From mboxrd@z Thu Jan 1 00:00:00 1970 From: Lars Kurth Subject: Re: Xen PV: Sample new PV driver for buffer sharing between domains Date: Thu, 27 Sep 2018 10:39:36 +0100 Message-ID: References: Mime-Version: 1.0 (Mac OS X Mail 11.5 \(3445.9.1\)) Content-Type: multipart/mixed; boundary="===============4853633143287771523==" Return-path: In-Reply-To: List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xenproject.org Sender: "Xen-devel" To: Omkar Bolla Cc: Julien Grall , xen-devel@lists.xensource.com, Stefano Stabellini , Oleksandr Andrushchenko List-Id: xen-devel@lists.xenproject.org --===============4853633143287771523== Content-Type: multipart/alternative; boundary="Apple-Mail=_FE3EE81C-D827-4BA6-BE98-08E666AA027A" --Apple-Mail=_FE3EE81C-D827-4BA6-BE98-08E666AA027A Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=us-ascii Adding a few people who have recently been working on PV drivers, as = well as Julien Lars > On 27 Sep 2018, at 06:44, Omkar Bolla = wrote: >=20 > Hi, >=20 > I am using Debian as Domain-0 and Debian as Domain-U on Hikey960 = platform(ARMv8) and using Xen-4.8 stable release. Here I want to create = a PV frontend and backend to share memory between Domain-0 and Domain-U.=20= >=20 >=20 >=20 > I used below link to create frontend and backend, > https://fnordig.de/2016/12/02/xen-a-backend-frontend-driver-example/ = >=20 > But I am facing below errors while adding device vdevb to xenstore.=20 > Below errors I am getting from xenbus_switch_state(). > vdevb vdevb-0: failed to write error node for device/vdevb/0 (13 = writing new state) >=20 > Please suggest me, How to create PV drivers. >=20 > Thanks, > Omkar B >=20 > This message contains confidential information and is intended only = for the individual(s) named. If you are not the intended recipient, you = are notified that disclosing, copying, distributing or taking any action = in reliance on the contents of this mail and attached file/s is strictly = prohibited. Please notify the sender immediately and delete this e-mail = from your system. E-mail transmission cannot be guaranteed to be secured = or error-free as information could be intercepted, corrupted, lost, = destroyed, arrive late or incomplete, or contain viruses. The sender = therefore does not accept liability for any errors or omissions in the = contents of this message, which arise as a result of e-mail = transmission. >=20 > _______________________________________________ > Xen-devel mailing list > Xen-devel@lists.xenproject.org > https://lists.xenproject.org/mailman/listinfo/xen-devel --Apple-Mail=_FE3EE81C-D827-4BA6-BE98-08E666AA027A Content-Transfer-Encoding: quoted-printable Content-Type: text/html; charset=us-ascii Adding a few people who have recently been working on PV = drivers, as well as Julien
Lars

On 27 = Sep 2018, at 06:44, Omkar Bolla <omkar.bolla@pathpartnertech.com> wrote:

Hi,

I am using Debian = as Domain-0 and Debian as Domain-U on Hikey960 platform(ARMv8) and using = Xen-4.8 stable release. Here I want to create a PV frontend and backend = to share memory between Domain-0 and Domain-U. 



I = used below link to create frontend and backend,
https://fnordig.de/2016/12/02/xen-a-backend-frontend-driver-exa= mple/

But I am facing below errors while adding device vdevb to = xenstore. 
Below errors I am getting = from xenbus_switch_state().
vdevb vdevb-0: failed to write error node for device/vdevb/0 = (13 writing new state)

Please suggest me, How to create PV = drivers.

Thanks,
Omkar = B

This message contains confidential information and is intended only for the individual(s) named. If = you are not the intended recipient, you are notified that disclosing, copying, distributing or = taking any action in reliance on the contents of this mail and attached file/s is = strictly prohibited. Please notify the sender immediately and delete this e-mail from your system. E-mail = transmission cannot be guaranteed to be secured or error-free as information could be intercepted, corrupted, lost, destroyed, arrive late or incomplete, or = contain viruses. The sender therefore does not accept liability for any errors = or omissions in the contents of this message, which arise as a result of = e-mail = transmission.

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