Messages in this thread | | | Date | Thu, 16 Apr 2015 09:28:02 +0200 | From | Ingo Molnar <> | Subject | Re: [PATCH] x86: Enable fast 32-bit put_user_64 for copy_to_user |
| |
* 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.
Thanks,
Ingo
| |