Re: [PATCH 1/4] core, x86: Add user return notifiers

H. Peter Anvin
2009-09-18T18:14:29Z

On 09/16/2009 05:45 AM, Avi Kivity wrote:
> Add a general per-cpu notifier that is called whenever the kernel is
> about to return to userspace. The notifier uses a thread_info flag
> and existing checks, so there is no impact on user return or context
> switch fast paths.
>
> Signed-off-by: Avi Kivity <avi@redhat.com>

The concept of this patch looks entirely sane, as does the code,
*except* for:

+#include <linux/user-return-notifier.h>

... missing header file, and ...

+obj-$(CONFIG_USER_RETURN_NOTIFIER) += user-return-notifier.o

... missing source file.

Could you fix the patch, please?

-hpa

--
H. Peter Anvin, Intel Open Source Technology Center
I work for Intel. I don't speak on their behalf.