linux-kernel - Re: [PATCH RT] time/hrtimer: disable that mode check

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: <20171213142257.ok7xdag5p4wp4mfo@linutronix.de>
Date:   Wed, 13 Dec 2017 15:22:57 +0100
From:   Sebastian Andrzej Siewior <bigeasy@...utronix.de>
To:     Peter Zijlstra <peterz@...radead.org>
Cc:     linux-rt-users@...r.kernel.org, linux-kernel@...r.kernel.org,
        tglx@...utronix.de, Steven Rostedt <rostedt@...dmis.org>
Subject: Re: [PATCH RT] time/hrtimer: disable that mode check

On 2017-12-13 15:19:19 [+0100], Peter Zijlstra wrote:
> On Wed, Dec 13, 2017 at 02:58:35PM +0100, Sebastian Andrzej Siewior wrote:
> > On -RT we push all timers by default into the soft-mode. The
> > "start/update" code does not use that SOFT bit so we always see that
> > warning.
> 
> Not _all_ timers I hope? There's a few the scheduler and perf use that
> really should stay in hardirq context.
That is correct, a few ones remain in the hardirq context.

Sebastian