linux-kernel - Re: [PATCH] mm/vmalloc: Extend find_vmap_lowest_match

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: <CAPhsuW4SGguyoFKpN8S=jFCWfLiDM-f5QwV7UPwkQ=LjQEXaNg@mail.gmail.com>
Date:   Wed, 31 Aug 2022 17:47:35 -0700
From:   Song Liu <song@...nel.org>
To:     Andrew Morton <akpm@...ux-foundation.org>
Cc:     Linux-MM <linux-mm@...ck.org>,
        open list <linux-kernel@...r.kernel.org>,
        Song Liu <songliubraving@...com>,
        Uladzislau Rezki <urezki@...il.com>,
        Baoquan He <bhe@...hat.com>
Subject: Re: [PATCH] mm/vmalloc: Extend find_vmap_lowest_match_check with
 extra arguments

On Wed, Aug 31, 2022 at 4:01 PM Andrew Morton <akpm@...ux-foundation.org> wrote:
>
> On Tue, 30 Aug 2022 22:27:34 -0700 Song Liu <song@...nel.org> wrote:
>
> > find_vmap_lowest_match() is now able to handle different roots. Make
> > similar changes to find_vmap_lowest_match_check() and
> > find_vmap_lowest_linear_match() to handle different trees.
>
> What are the runtime effects of this change?

The code is gated by DEBUG_AUGMENT_LOWEST_MATCH_CHECK. It
is only compiled when the developer enables it explicitly. Therefore,
there isn't
any runtime effect.

Thanks,
Song