Re: [PATCH v2] core, x86: Add user return notifiers

Ingo Molnar
2009-09-22T14:32:28Z

* Avi Kivity <avi@redhat.com> wrote:

> On 09/19/2009 09:40 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.
>>
>
> Ingo/Peter?

Would be nice to convert some existing open-coded return-to-user-space
logic to this facility. One such candidate would be lockdep_sys_exit?

Ingo