linux-kernel - Re: [PATCH v2 15/25] timekeeping: Provide timekeeping_restore

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]

Message-ID: <CANDhNCr9mVe_ARu1gaTxpSMA-ybqBWvXG5Ros1b0P9uMheU17g@mail.gmail.com>
Date: Thu, 24 Oct 2024 14:45:27 -0700
From: John Stultz <jstultz@...gle.com>
To: Anna-Maria Behnsen <anna-maria@...utronix.de>
Cc: Frederic Weisbecker <frederic@...nel.org>, Thomas Gleixner <tglx@...utronix.de>, 
	linux-kernel@...r.kernel.org, netdev@...r.kernel.org, 
	Miroslav Lichvar <mlichvar@...hat.com>, Richard Cochran <richardcochran@...il.com>, 
	Christopher S Hall <christopher.s.hall@...el.com>
Subject: Re: [PATCH v2 15/25] timekeeping: Provide timekeeping_restore_shadow()

On Wed, Oct 9, 2024 at 1:29 AM Anna-Maria Behnsen
<anna-maria@...utronix.de> wrote:
>
> From: Thomas Gleixner <tglx@...utronix.de>
>
> From: Thomas Gleixner <tglx@...utronix.de>
>
> Functions which operate on the real timekeeper, e.g. do_settimeofday(),
> have error conditions. If they are hit a full timekeeping update is still
> required because the already committed operations modified the timekeeper.
>
> When switching these functions to operate on the shadow timekeeper then the
> full update can be avoided in the error case, but the modified shadow
> timekeeper has to be restored.
>
> Provide a helper function for that.
>
> Signed-off-by: Thomas Gleixner <tglx@...utronix.de>
> Signed-off-by: Anna-Maria Behnsen <anna-maria@...utronix.de>

Acked-by: John Stultz <jstultz@...gle.com>