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

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Message-Id: <200911072210.55270.rjw@sisk.pl>
Date:	Sat, 7 Nov 2009 22:10:55 +0100
From:	"Rafael J. Wysocki" <rjw@...k.pl>
To:	Arnd Bergmann <arnd@...db.de>
Cc:	Pavel Machek <pavel@....cz>, 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, Arnd Bergmann wrote:
> On Saturday 07 November 2009, Rafael J. Wysocki wrote:
> > > 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.
> 
> You don't need to drop support for older kernels if s2disk simply tries the
> new interface first and falls back to the current one if that fails.

Compat ioctls support is not possible with the old interface.

Thanks,
Rafael
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