linux-kernel - Re: [PATCH] PM / i915: Skip kernel VT switch during suspend/resume if KMS is used

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Message-Id: <201001242004.22778.rjw@sisk.pl>
Date:	Sun, 24 Jan 2010 20:04:22 +0100
From:	"Rafael J. Wysocki" <rjw@...k.pl>
To:	Alan Cox <alan@...rguk.ukuu.org.uk>
Cc:	Jesse Barnes <jbarnes@...tuousgeek.org>,
	Len Brown <lenb@...nel.org>,
	LKML <linux-kernel@...r.kernel.org>,
	pm list <linux-pm@...ts.linux-foundation.org>,
	dri-devel@...ts.sourceforge.net, Eric Anholt <eric@...olt.net>
Subject: Re: [PATCH] PM / i915: Skip kernel VT switch during suspend/resume if KMS is used

On Sunday 24 January 2010, Alan Cox wrote:
> > I've been testing this patch for over a week and haven't seen a single problem
> > related to it during this time.
> > 
> > Are there any objections to it?
> 
> Usual question 8) - explain the locking. What happens if we suspend as
> kms is initialising/being removed.

Nothing extremely interesting AFAICS.  There's no X yet or it's already exited,
so we don't need a VT switch anyway.

> Also what happens if you have KMS and non KMS consoles both active
> through the frame buffer off different cards ?

That's more interesting.  In fact I didn't take that into consideration. :-)
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