Re: [PATCH] x86: Add support for 64bit get_user() on x86-32
From: H. Peter Anvin
Date: Fri Feb 08 2013 - 14:09:36 EST
Yes, or anything else getting a pointer in memory from user space.
"Ville SyrjÃlÃ" <ville.syrjala@xxxxxxxxxxxxxxx> wrote:
>On Fri, Feb 08, 2013 at 09:30:05AM -0800, H. Peter Anvin wrote:
>> On 02/08/2013 08:24 AM, Ville SyrjÃlÃ wrote:
>> >> How have you tested it?
>> > I've tried it with my drm/kms atomic pageflip/modeset code. I also
>> > a small test module that did a couple of different sized get_user()
>> > calls, but I'll be damned if I can find it again.
>> Did you see the warning spewage for pointers when you built it?
>Apparently my config was too small to genenerate enough of those to
>my eye. Most of those seem to come from drivers that have pointers in
>ioctl structs, no?
Sent from my mobile phone. Please excuse brevity and lack of formatting.
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