linux-kernel - Re: [PATCH 10/29] selftests/mm: Test UFFDIO

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Message-ID: <ZDWvCXArb/88rdpL@x1n>
Date:   Tue, 11 Apr 2023 15:03:37 -0400
From:   Peter Xu <peterx@...hat.com>
To:     Mike Rapoport <rppt@...ux.ibm.com>
Cc:     David Hildenbrand <david@...hat.com>,
        Axel Rasmussen <axelrasmussen@...gle.com>,
        Mike Kravetz <mike.kravetz@...cle.com>, linux-mm@...ck.org,
        linux-kernel@...r.kernel.org,
        Andrew Morton <akpm@...ux-foundation.org>,
        Andrea Arcangeli <aarcange@...hat.com>,
        Leonardo Bras Soares Passos <lsoaresp@...hat.com>,
        Mike Rapoport <rppt@...ux.vnet.ibm.com>,
        Nadav Amit <nadav.amit@...il.com>
Subject: Re: [PATCH 10/29] selftests/mm: Test UFFDIO_ZEROPAGE only when
 !hugetlb

On Fri, Apr 07, 2023 at 12:42:29PM +0300, Mike Rapoport wrote:
> > +/*
> > + * Registers a range with MISSING mode only for zeropage test.  Return true
> > + * if UFFDIO_ZEROPAGE supported, false otherwise. Can't use uffd_register()
> > + * because we want to detect .ioctls along the way.
> > + */
> > +static bool
> > +uffd_register_detect_zp(int uffd, void *addr, uint64_t len)
> 
> Let's spell out 'zp' as zeropage, what do you say?

Definitely can do. :)

Thanks,

-- 
Peter Xu