Re: [PATCH v3 00/13] Virtually mapped stacks with guard pages (x86, core)

Andy Lutomirski
2016-06-23T19:10:13Z

On Thu, Jun 23, 2016 at 11:53 AM, Peter Zijlstra <peterz@infradead.org> wrote:
> On Thu, Jun 23, 2016 at 10:52:58AM -0700, Linus Torvalds wrote:
>> Ugh. Looking around at this, it turns out that a great example of this
>> kind of legacy issue is the debug_mutex stuff.
>>
>> It uses "struct thread_info *" as the owner pointer, and there is _no_
>> existing reason for it. In fact, in every single place it actually
>> wants the task_struct, and it does task_thread_info(task) just to
>> convert it to the thread-info, and then converts it back with
>> "ti->task".
>>
>> So the attached patch seems to be the right thing to do regardless of
>> this whole discussion.
>
> Yeah, that looks fine. Want me to take it or will you just commit?

PeterZ, mind if I split it into a couple of patches, test it, and add
it to my series?

--Andy