linux-kernel - Re: [PATCH v12 mm-new 15/15] Documentation: mm: update the admin guide for mTHP collapse

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: <bba40f08-1b87-6b57-0e10-6e96e4d7bde6@gentwo.org>
Date: Wed, 22 Oct 2025 12:52:26 -0700 (PDT)
From: "Christoph Lameter (Ampere)" <cl@...two.org>
To: Nico Pache <npache@...hat.com>
cc: linux-kernel@...r.kernel.org, linux-trace-kernel@...r.kernel.org, 
    linux-mm@...ck.org, linux-doc@...r.kernel.org, david@...hat.com, 
    ziy@...dia.com, baolin.wang@...ux.alibaba.com, lorenzo.stoakes@...cle.com, 
    Liam.Howlett@...cle.com, ryan.roberts@....com, dev.jain@....com, 
    corbet@....net, rostedt@...dmis.org, mhiramat@...nel.org, 
    mathieu.desnoyers@...icios.com, akpm@...ux-foundation.org, 
    baohua@...nel.org, willy@...radead.org, peterx@...hat.com, 
    wangkefeng.wang@...wei.com, usamaarif642@...il.com, sunnanyong@...wei.com, 
    vishal.moola@...il.com, thomas.hellstrom@...ux.intel.com, 
    yang@...amperecomputing.com, kas@...nel.org, aarcange@...hat.com, 
    raquini@...hat.com, anshuman.khandual@....com, catalin.marinas@....com, 
    tiwai@...e.de, will@...nel.org, dave.hansen@...ux.intel.com, jack@...e.cz, 
    jglisse@...gle.com, surenb@...gle.com, zokeefe@...gle.com, 
    hannes@...xchg.org, rientjes@...gle.com, mhocko@...e.com, 
    rdunlap@...radead.org, hughd@...gle.com, richard.weiyang@...il.com, 
    lance.yang@...ux.dev, vbabka@...e.cz, rppt@...nel.org, jannh@...gle.com, 
    pfalcato@...e.de, Bagas Sanjaya <bagasdotme@...il.com>
Subject: Re: [PATCH v12 mm-new 15/15] Documentation: mm: update the admin
 guide for mTHP collapse

On Wed, 22 Oct 2025, Nico Pache wrote:

> Currently, madvise_collapse only supports collapsing to PMD-sized THPs +
> and does not attempt mTHP collapses. +

madvise collapse is frequently used as far as I can tell from the THP
loads being tested. Could we support madvise collapse for mTHP?