Hello,
I work on a network-based hvc console backend for s390 that allows
to get "full-screen" terminal access to z/VM guest machines.
The solution consists of a HVC backend that provides the terminal interface;
and a tool to connect to the terminal via a z/VM specific communication
protocol.
The network-based backend differs in a few aspects from the notifier-based
model of the HVC console; because it has to deal with (dis)connects and must
take care of virtual tty hangups. Therefore, I would like to introduce a third
notifier for hangups (see patch 1).
Further I found out that if put_char() returns 0 in particular cases, the hvc
console starts to loop. I tried to address this problem with patch 3 and I hope
that it will work for all backends.
Finally, I would like to add a function that allows to resize the terminal
window of a HVC terminal (patch 4).
Here is an overview about the complete patch series:
Patch 1 adds a hangup notifier
Patch 2 adds tty driver flag TTY_DRIVER_RESET_TERMIOS
Patch 3 fixes a loop if put_char() returns 0
Patch 4 adds a function to resize the tty window
Patch 5 removes __devexit of hvc_remove() for use in __(dev)init sections
Any review feedback would be greatly appreciated.
Thank you in advance.
Regards,
Hendrik
--
Hendrik Brueckner
D/3303 Linux on System z Development
Tel: +49 7031 16-1073
Fax: +49 7031 16-3456
eMail: [email protected]
IBM Deutschland Research & Development GmbH, Schoenaicher Str. 220, 71032 Boeblingen
IBM Deutschland Research & Development GmbH
Vorsitzender des Aufsichtsrats: Martin Jetter
Geschaeftsfuehrung: Erich Baier
Sitz der Gesellschaft: Boeblingen
Registergericht: Amtsgericht Stuttgart, HRB 243294
On Tue, 2008-10-14 at 11:12 +0200, Hendrik Brueckner wrote:
> Hello,
>
> I work on a network-based hvc console backend for s390 that allows
> to get "full-screen" terminal access to z/VM guest machines.
> The solution consists of a HVC backend that provides the terminal interface;
> and a tool to connect to the terminal via a z/VM specific communication
> protocol.
.../...
Hi !
What's the status with that patch serie ? Is this 2.6.28 material ?
Alan, are you ok with those ? Hendrik, have there been any respin other
than v2 of patch 4/5 ?
I can merge it via powerpc but it's getting late in the merge window...
Cheers,
Ben.
On Tue, Oct 21, 2008 at 10:23:37AM +1100, Benjamin Herrenschmidt wrote:
> What's the status with that patch serie ? Is this 2.6.28 material ?
It is 2.6.28 material.
> Alan, are you ok with those ? Hendrik, have there been any respin other
> than v2 of patch 4/5 ?
The other patches have not been changed.
fyi: patch 1/5 (hangup notifier) applies successfully with an offset
of 2 lines due to commit eef2622a9fcfa964073333ea72c7c9cd20ad45e6
(hvc_console: Fix free_irq in spinlocked section).
> I can merge it via powerpc but it's getting late in the merge window...
Thanks... that would be really great!
Regards
Hendrik
--
Hendrik Brueckner
D/3303 Linux on System z Development
Tel: +49 7031 16-1073
Fax: +49 7031 16-3456
eMail: [email protected]
IBM Deutschland Research & Development GmbH, Schoenaicher Str. 220, 71032 Boeblingen
IBM Deutschland Research & Development GmbH
Vorsitzender des Aufsichtsrats: Martin Jetter
Geschaeftsfuehrung: Erich Baier
Sitz der Gesellschaft: Boeblingen
Registergericht: Amtsgericht Stuttgart, HRB 243294