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

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Message-ID: <CAMbhsRRP=ccdMb5PNwyYab+JoMdh+rmo2qF1naEDGBFCdMz9=A@mail.gmail.com>
Date:	Wed, 4 Dec 2013 12:46:42 -0800
From:	Colin Cross <ccross@...roid.com>
To:	Greg KH <gregkh@...uxfoundation.org>
Cc:	Serban Constantinescu <serban.constantinescu@....com>,
	Arve Hjønnevåg <arve@...roid.com>,
	"devel@...verdev.osuosl.org" <devel@...verdev.osuosl.org>,
	lkml <linux-kernel@...r.kernel.org>,
	John Stultz <john.stultz@...aro.org>,
	David Butcher <Dave.Butcher@....com>,
	Ian Rogers <irogers@...gle.com>, romlem@...roid.com
Subject: Re: [PATCH v1 9/9] staging: android: binder: Add binder compat layer

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?
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