linux-kernel - Re: [Bug 14537] New: missing compat_ioctl on x86

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Message-Id: <200911072006.36904.rjw@sisk.pl>
Date:	Sat, 7 Nov 2009 20:06:36 +0100
From:	"Rafael J. Wysocki" <rjw@...k.pl>
To:	Pavel Machek <pavel@....cz>
Cc:	Thomas Gleixner <tglx@...utronix.de>,
	LKML <linux-kernel@...r.kernel.org>,
	Thierry Vignaud <tvignaud@...driva.com>,
	bugzilla-daemon@...zilla.kernel.org
Subject: Re: [Bug 14537] New: missing compat_ioctl on x86_64

On Saturday 07 November 2009, Pavel Machek wrote:
> Hi!
> 
> > > > - when trying to suspend:
> > > > ioctl32(s2disk:8164): Unknown cmd fd(4) cmd(400c330d){t:'3';sz:12}
> > > > arg(ffc190ec) on /dev/snapshot
> > > > ioctl32(s2disk:8164): Unknown cmd fd(4) cmd(4004330a){t:'3';sz:4} arg(00000806)
> > > > on /dev/snapshot
> > > 
> > > snapshot_ioctl seems to lack compat support completely. Raphael ??
> > 
> > It does, but that wouldn't work anyway.  s2disk is one of the things that have
> > to be native.
> 
> Actually... it would be nice to fix that one day, if someone submitted
> nice patch... :-).   

It must be fixed in s2disk first, but that would probably require us to drop
support for older kernels.  Which is not unthinkable, but might hurt some
users.

Thanks,
Rafael
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