linux-kernel - Re: [PATCHv4 09/12] x86/mm: Provide pmdp

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Message-ID: <20171214004235.uuyyhk5zpvutysct@node.shutemov.name>
Date:   Thu, 14 Dec 2017 03:42:36 +0300
From:   "Kirill A. Shutemov" <kirill@...temov.name>
To:     Andrew Morton <akpm@...ux-foundation.org>
Cc:     "Kirill A. Shutemov" <kirill.shutemov@...ux.intel.com>,
        Vlastimil Babka <vbabka@...e.cz>,
        Andrea Arcangeli <aarcange@...hat.com>,
        Michal Hocko <mhocko@...nel.org>, linux-arch@...r.kernel.org,
        linux-mm@...ck.org, linux-kernel@...r.kernel.org,
        Ingo Molnar <mingo@...nel.org>,
        "H . Peter Anvin" <hpa@...or.com>,
        Thomas Gleixner <tglx@...utronix.de>
Subject: Re: [PATCHv4 09/12] x86/mm: Provide pmdp_establish() helper

On Wed, Dec 13, 2017 at 04:36:39PM -0800, Andrew Morton wrote:
> So how the heck do we test this?  Add an artificial delay on the other
> side to open the race window?

I'll look tomorrow how we can provide proper testing for the corner case.

-- 
 Kirill A. Shutemov