linux-kernel - Re: [PATCH 01/10] mm/page-flags: introduce PageHighMemZone()

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 for Android: free password hash cracker in your pocket

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

Date:   Wed, 22 Apr 2020 16:40:29 +0900
From:   Joonsoo Kim <js1304@...il.com>
To:     Christoph Hellwig <hch@...radead.org>
Cc:     Andrew Morton <akpm@...ux-foundation.org>,
        Linux Memory Management List <linux-mm@...ck.org>,
        LKML <linux-kernel@...r.kernel.org>,
        Vlastimil Babka <vbabka@...e.cz>,
        Laura Abbott <labbott@...hat.com>,
        "Aneesh Kumar K . V" <aneesh.kumar@...ux.ibm.com>,
        Mel Gorman <mgorman@...hsingularity.net>,
        Michal Hocko <mhocko@...e.com>,
        Johannes Weiner <hannes@...xchg.org>,
        Roman Gushchin <guro@...com>, Minchan Kim <minchan@...nel.org>,
        Rik van Riel <riel@...riel.com>,
        Christian Koenig <christian.koenig@....com>,
        Huang Rui <ray.huang@....com>,
        Eric Biederman <ebiederm@...ssion.com>,
        "Rafael J . Wysocki" <rjw@...ysocki.net>,
        Pavel Machek <pavel@....cz>,
        Joonsoo Kim <iamjoonsoo.kim@....com>
Subject: Re: [PATCH 01/10] mm/page-flags: introduce PageHighMemZone()

2020년 4월 21일 (화) 오후 6:00, Christoph Hellwig <hch@...radead.org>님이 작성:
>
> I don't think the names are very good.  I'd keep PageHighMem for the
> existing highmem zone, and add something like PageDirectMapped or
> similar for ay page that has a valid direct mapping address.  This will
> also come in handy if we plan to go ahead with the xpfo work.

For PageHighMem(), as mentioned in patch description, my next plan is
to rename PageHighMem() that checks valid direct mapping to
PageNoDirectMapped() or something else. PageDirectMapped() looks better.
Reason that rename isn't implemented in this patchset is that I'd like to rename
after everything is settle down.

For PageHighMemZone(), I think that it serves correct meaning.

Thanks.