From: Linda <lindaj@jma3.com>
To: Wei Liu <wei.liu2@citrix.com>
Cc: julien.grall@citrix.com, xen-devel@lists.xenproject.org,
lars.kurth.xen@gmail.com
Subject: Re: grant tables and driver handshaking
Date: Thu, 11 Jun 2015 06:32:08 -0600 [thread overview]
Message-ID: <55797FC8.8050806@jma3.com> (raw)
In-Reply-To: <20150611104349.GI14606@zion.uk.xensource.com>
On 6/11/2015 4:43 AM, Wei Liu wrote:
> On Wed, Jun 10, 2015 at 07:45:15PM -0600, Linda wrote:
>> Hello all,
>> I will be writing a xen front and back-end pair for a 9p transport. I
>> have two areas where I'm still a little more muddled than I'd like to be.
>> Can anyone please recommend a good article on either grant tables or the
>> handshaking between the front and back-end drivers, or both?
> The handshake protocol needs to be designed by you. Generally speaking
> you need to at least advertise the event channel and grant table
> references. You also need to advertise other information that you
> identify as part of the handshake process.
OK. That explains half of my muddle.
Here's the other half. The wiki article on xenbus taks about the
front-end registering with xenbus, before anything else happens. But in
blkback, it looks like it too has to do some kind of setup with xenbus,
too.
Since the backend is in DOM0, and is around longer than the DOMUs, this
happens first. It's that interaction that I'd like a little more text
on. If it exists.
>
> There is a wiki page on grant table
>
> http://wiki.xenproject.org/wiki/Grant_Table
Thanks.
>
> Wei.
>
>> I have looked at the code, but could use more verbiage.
>> Thanks.
>>
>> Linda
next prev parent reply other threads:[~2015-06-11 12:32 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-04-15 17:02 [PATCH v7] libxl: provide libxl_bitmap_{or,and} Linda Jacobson
2015-04-16 14:34 ` Ian Campbell
2015-04-16 14:40 ` Linda
2015-04-16 14:45 ` Wei Liu
2015-04-16 16:49 ` Linda
2015-04-22 14:21 ` Ian Campbell
2015-06-03 15:24 ` clarification of xen Wiki article Linda
2015-06-04 9:58 ` Ian Campbell
2015-06-04 10:35 ` Wei Liu
2015-06-04 11:31 ` Wei Liu
2015-06-04 11:35 ` Ian Campbell
2015-06-04 11:46 ` Wei Liu
2015-06-04 11:15 ` Linda
2015-06-11 1:45 ` grant tables and driver handshaking Linda
2015-06-11 10:43 ` Wei Liu
2015-06-11 12:32 ` Linda [this message]
2015-06-11 16:24 ` Wei Liu
2015-06-11 16:38 ` Ian Campbell
2015-06-11 17:11 ` Linda
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