From: Andrew Cooper <andrew.cooper3@citrix.com>
To: Simon Martin <smartin@milliways.cl>
Cc: "xen-devel@lists.xen.org" <xen-devel@lists.xen.org>
Subject: Re: Problems with console io from a PV guest
Date: Wed, 30 Oct 2013 21:26:24 +0000 [thread overview]
Message-ID: <52717980.3000808@citrix.com> (raw)
In-Reply-To: <emd350c95b-7218-43ac-9ffd-62b239314481@smartin-alien>
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On 30/10/13 21:17, Simon Martin wrote:
> Hi All,
>
> I am using the latest and greatest 4.4 unstable and I'm having
> problems with console IO. I've been playing around with it for the
> last couple of days and I can't seem to find what's wrong. I start the
> guest with the "xl create -c" command and I only get one line of
> output. Input works fine.
>
> My code is based on the mini-os implementation. My sequence of events
> is as follows from startup is as follows:
>
> 1.- Map in the shared_info page
>
> 2.- Initialise the console event
>
> 3.- Write a line to the console. Send the console channel event. This
> seems to work as I see the output in the console and the console cons
> and prod indices are equal on the next write call.
>
> 4.- After writing I get an event on the console channel with no
> characters.
Do you mean that you get an event on the event channel but there is no
movement on the prod/cons indicies?
~Andrew
>
> 5.- Any writes after this are not shown on the console.
>
> Any idea what I'm doing wrong?
>
> Regards.
>
>
> --
> _ _ Debian GNU User Simon Martin
> | | (_)_ __ _ ___ __ Project Manager
> | | | | '_ \| | | \ \/ / Milliways
> | |___| | | | | |_| |> < mailto: smartin@milliways.cl
> |_____|_|_| |_|\__,_/_/\_\
> Si Hoc Legere Scis Nimium Eruditionis Habes
>
>
>
> _______________________________________________
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next prev parent reply other threads:[~2013-10-30 21:26 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-10-30 21:17 Problems with console io from a PV guest Simon Martin
2013-10-30 21:26 ` Andrew Cooper [this message]
2013-10-31 11:32 ` Simon Martin
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