From: Blaisorblade <blaisorblade@yahoo.it>
To: user-mode-linux-devel@lists.sourceforge.net
Cc: "D. Bahi" <dbahi@enterasys.com>
Subject: Re: [uml-devel] stdin lockup using con0=fd:0,fd:1 (guest 2.4.26-3um)
Date: Sat, 5 Mar 2005 16:52:06 +0100 [thread overview]
Message-ID: <200503051652.06673.blaisorblade@yahoo.it> (raw)
In-Reply-To: <422639E7.4080405@enterasys.com>
On Wednesday 02 March 2005 23:10, D. Bahi wrote:
> did i miss the console cleanup crew?
? Not understood, 2.4 didn't get the big cleanup.
> i have a UML guest command line that uses con0=fd:0,fd:1
> (or not, as this is the default for CONFIG_CON_ZERO_CHAN)
>
> i launch new xterms using -- xterm -e '<guest cmdline>' &
> (side note - can lock it w/o this too.)
Describe the other scenario please...
> and users leaning on
> the keyboard (most notably <enter>) while the new xterms pop
> up and steal the window focus have experienced unresponsive
> UML prompts.
Hmm, can you exclude this is some X11 problem? I get problems in my Opera
browser when a Java applet is started (which makes a Java progress window
appear for a while). No, I'm not joking. Please try getting the same thing
inside normal consoles, or getting the same thing with xterms and without
UML.
> no further keyboard input is processed...
>
> uml_mconsole <id> reboot and things can be made better.
> so the UML isn't locked up just the stdin....
>
> i've tried to go thru stdio_init -> open_console -> line_open
> to see if there was a likely place to drop a 'flush' of stdin
? I don't think stdin is flushable (but I don't understand what you mean, so I
could be wrong).
> before we try attaching 0 -> 1 and 1 -> 0 (line_setup_irq)...
Hmm, line_setup_irq makes sure that a IRQ is triggered when a event is
received on the fd. That fd is provided by the channel driver (the one in
con=xterm/pty/fd).
> but i don't understand it all enough <frown>.
> this is redhat 9 + SKAS - NPTL 2.4.20-31 host kernel
> linux 2.4.26-3um guest kernel.
> thank you.
--
Paolo Giarrusso, aka Blaisorblade
Linux registered user n. 292729
http://www.user-mode-linux.org/~blaisorblade
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prev parent reply other threads:[~2005-03-05 16:05 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-03-02 22:10 [uml-devel] stdin lockup using con0=fd:0,fd:1 (guest 2.4.26-3um) D. Bahi
2005-03-05 15:52 ` Blaisorblade [this message]
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