linux-kernel - Re: [PATCH -V10 0/9] Migrate Pages in lieu of discard

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <YPDcmzSq2YKS9jZ9@casper.infradead.org>
Date:   Fri, 16 Jul 2021 02:10:51 +0100
From:   Matthew Wilcox <willy@...radead.org>
To:     Dave Hansen <dave.hansen@...el.com>
Cc:     Andrew Morton <akpm@...ux-foundation.org>,
        Huang Ying <ying.huang@...el.com>, linux-mm@...ck.org,
        linux-kernel@...r.kernel.org,
        Dave Hansen <dave.hansen@...ux.intel.com>,
        yang.shi@...ux.alibaba.com, rientjes@...gle.com,
        dan.j.williams@...el.com, david@...hat.com, osalvador@...e.de,
        weixugc@...gle.com, Michal Hocko <mhocko@...e.com>,
        Yang Shi <shy828301@...il.com>, Zi Yan <ziy@...dia.com>
Subject: Re: [PATCH -V10 0/9] Migrate Pages in lieu of discard

On Thu, Jul 15, 2021 at 02:42:07PM -0700, Dave Hansen wrote:
> The end game for auto-migration is to on by default, wherever these
> hardware configurations show up.  Just like THP, I expect this to be
> broadly useful.  But, given the breadth of our user base, I also expect
> it to be nasty for a minority of users.  They'll need a way to turn it
> off, and hopefully they'll also provide feedback so that, if possible,
> we can improve the default behavior and bring them back into the fold.

... or if the THP experience is anything to go by, they continue to
shout loudly about how borken it is for a decade ;-(