Re: [PATCHv7 02/14] mm: Add support for unaccepted memory

David Hildenbrand
2022-07-26T14:31:03Z

On 25.07.22 14:53, Borislav Petkov wrote:
> On Mon, Jul 25, 2022 at 02:38:57PM +0200, David Hildenbrand wrote:
>> The less core-MM code to handle unaccepted memory the better. Meaning,
>> that any kind of additional pre-acceptance (in addition to what we have
>> here) needs good justification.
>
> I actually mean to have a user interface to have the core code
> pre-accept. I.e., interface to what will be already there anyway.
>

Ah, got it. The "issue" with ordinary prefaulting in user space is that
you'll also end up zeroing the memory. But yeah, it should just accept a
bunch of memory.

> Or is that frowned upon too?

I was assuming you'd want some additional interface that only accept
memory without actually temporarily allocating it.

--
Thanks,

David / dhildenb