linux-kernel - Re: [PATCH] virtio_console: Add support for multiple ports for generic guest and host communication

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Message-Id: <200909291340.37431.borntraeger@de.ibm.com>
Date:	Tue, 29 Sep 2009 13:40:37 +0200
From:	Christian Borntraeger <borntraeger@...ibm.com>
To:	Amit Shah <amit.shah@...hat.com>
Cc:	Rusty Russell <rusty@...tcorp.com.au>,
	Alan Cox <alan@...ux.intel.com>,
	virtualization@...ts.linux-foundation.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] virtio_console: Add support for multiple ports for generic guest and host communication

Am Dienstag 29 September 2009 13:02:51 schrieb Christian Borntraeger:
> I took a dump and had a look. It looks that this message thing is indeed
>  not the problem. Our early_put_chars method was marked as __init and the
>  old code replaced the put_chars method quickly enough to never make a
>  problem. Removing the __init from early_put_chars solved this kernel bug,
>  but the tty performance is now horribly slow. I will test, if the
>  put_chars method is replaced at all.

I can confirm that your patch changes virtio_console in a way, that the 
early_put_chars function is not replaced by the final one, but I dont see why.

Christian
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