linux-kernel - Re: [PATCH v1 9/9] staging: android: binder: Add binder compat layer

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Message-ID: <20131204214325.GA19565@kroah.com>
Date:	Wed, 4 Dec 2013 13:43:25 -0800
From:	Greg KH <gregkh@...uxfoundation.org>
To:	Colin Cross <ccross@...roid.com>
Cc:	"devel@...verdev.osuosl.org" <devel@...verdev.osuosl.org>,
	Ian Rogers <irogers@...gle.com>,
	Serban Constantinescu <serban.constantinescu@....com>,
	lkml <linux-kernel@...r.kernel.org>,
	Arve Hjønnevåg <arve@...roid.com>,
	John Stultz <john.stultz@...aro.org>, romlem@...roid.com,
	David Butcher <Dave.Butcher@....com>
Subject: Re: [PATCH v1 9/9] staging: android: binder: Add binder compat layer

On Wed, Dec 04, 2013 at 12:46:42PM -0800, Colin Cross wrote:
> On Wed, Dec 4, 2013 at 10:35 AM, Greg KH <gregkh@...uxfoundation.org> wrote:
> <snip>
> 
> > And finally, is this all really needed?  Why not just fix the structures
> > to be "correct", and then fix userspace to use the correct structures as
> > well, thereby not needing a compat layer at all?
> 
> Some of the binder ioctls take userspace pointers.  Are you suggesting
> storing those pointers in a __u64 to avoid having to have a
> compat_ioctl?

Yes, that's the best way to solve the issue, right?

thanks,

greg k-h
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