Messages in this thread |  | | Date | Thu, 16 Apr 2015 08:40:48 +0100 | From | Chris Wilson <> | Subject | Re: [PATCH] x86: Enable fast 32-bit put_user_64 for copy_to_user |
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On Thu, Apr 16, 2015 at 09:28:02AM +0200, Ingo Molnar wrote: > > * Chris Wilson <chris@chris-wilson.co.uk> wrote: > > > For fixed sized copies, copy_to_user() will utilize __put_user_size > > fastpaths. However, it is missing the translation for 64bit copies on > > x86/32. Testing on a Pinetrail Atom, the 64 bit put_user fastpath is > > substantially faster than the generic copy_to_user() fallback. > > > > Cc: Thomas Gleixner <tglx@linutronix.de> > > Cc: Ingo Molnar <mingo@redhat.com> > > Cc: "H. Peter Anvin" <hpa@zytor.com> > > Cc: x86@kernel.org > > CC: linux-kernel@vger.kernel.org > > The patch makes sense, but your Signed-off-by line is missing.
Sorry, totally forgot that when rewriting the changelog. Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> -Chris
-- Chris Wilson, Intel Open Source Technology Centre
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