From: Thomas Gleixner <tglx@kernel.org>
To: Calvin Owens <calvin@wbinvd.org>
Cc: LKML <linux-kernel@vger.kernel.org>,
Peter Zijlstra <peterz@infradead.org>,
Anna-Maria Behnsen <anna-maria@linutronix.de>,
Frederic Weisbecker <frederic@kernel.org>,
Ingo Molnar <mingo@kernel.org>, John Stultz <jstultz@google.com>,
Stephen Boyd <sboyd@kernel.org>,
Alexander Viro <viro@zeniv.linux.org.uk>,
Christian Brauner <brauner@kernel.org>, Jan Kara <jack@suse.cz>,
linux-fsdevel@vger.kernel.org, Sebastian Reichel <sre@kernel.org>,
linux-pm@vger.kernel.org, Pablo Neira Ayuso <pablo@netfilter.org>,
Florian Westphal <fw@strlen.de>, Phil Sutter <phil@nwl.cc>,
netfilter-devel@vger.kernel.org, coreteam@netfilter.org
Subject: Re: [patch 00/12] hrtimers: Prevent hrtimer interrupt starvation
Date: Tue, 07 Apr 2026 20:03:40 +0200 [thread overview]
Message-ID: <87ika24phf.ffs@tglx> (raw)
In-Reply-To: <adVA_uv1srA_bsKj@mozart.vkv.me>
On Tue, Apr 07 2026 at 10:38, Calvin Owens wrote:
> On Tuesday 04/07 at 10:54 +0200, Thomas Gleixner wrote:
>> He provided a reproducer, which sets up a timerfd based timer and then
>> rearms it in a loop with an absolute expiry time of 1ns.
>
> The original AMD machines survive the reproducer with this series.
>
> Tested-by: Calvin Owens <calvin@wbinvd.org>
>
> I'm happy to test subsets of it and stable backports too, if that's
> helpful, just let me know.
We'll only backport the first patch, so confirming that it still
prevents the issue would be nice. The rest is slated for upstream only.
Thanks,
tglx
next prev parent reply other threads:[~2026-04-07 18:03 UTC|newest]
Thread overview: 45+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-04-07 8:54 [patch 00/12] hrtimers: Prevent hrtimer interrupt starvation Thomas Gleixner
2026-04-07 8:54 ` [patch 01/12] clockevents: Prevent timer " Thomas Gleixner
2026-04-07 9:42 ` Peter Zijlstra
2026-04-07 11:30 ` Thomas Gleixner
2026-04-07 11:49 ` Peter Zijlstra
2026-04-07 13:59 ` Thomas Gleixner
2026-04-07 14:00 ` Frederic Weisbecker
2026-04-07 16:08 ` Thomas Gleixner
2026-04-07 18:01 ` Thomas Gleixner
2026-04-07 14:33 ` Thomas Gleixner
2026-04-07 20:23 ` [tip: timers/urgent] " tip-bot2 for Thomas Gleixner
2026-04-07 8:54 ` [patch 02/12] hrtimer: Provide hrtimer_start_range_ns_user() Thomas Gleixner
2026-04-07 9:54 ` Peter Zijlstra
2026-04-07 11:32 ` Thomas Gleixner
2026-04-07 9:57 ` Peter Zijlstra
2026-04-07 11:34 ` Thomas Gleixner
2026-04-07 8:54 ` [patch 03/12] hrtimer: Use hrtimer_start_expires_user() for hrtimer sleepers Thomas Gleixner
2026-04-07 9:59 ` Peter Zijlstra
2026-04-07 8:54 ` [patch 04/12] posix-timers: Expand timer_[re]arm() callbacks with a boolean return value Thomas Gleixner
2026-04-07 10:00 ` Peter Zijlstra
2026-04-07 20:20 ` John Stultz
2026-04-07 8:54 ` [patch 05/12] posix-timers: Handle the timer_[re]arm() " Thomas Gleixner
2026-04-07 10:01 ` Peter Zijlstra
2026-04-07 8:54 ` [patch 06/12] posix-timers: Switch to hrtimer_start_expires_user() Thomas Gleixner
2026-04-07 10:01 ` Peter Zijlstra
2026-04-07 8:54 ` [patch 07/12] alarmtimer: Provide alarmtimer_start() Thomas Gleixner
2026-04-07 10:04 ` Peter Zijlstra
2026-04-07 11:34 ` Thomas Gleixner
2026-04-07 20:23 ` John Stultz
2026-04-07 8:54 ` [patch 08/12] alarmtimer: Convert posix timer functions to alarmtimer_start() Thomas Gleixner
2026-04-07 20:19 ` John Stultz
2026-04-07 8:54 ` [patch 09/12] fs/timerfd: Use the new alarm/hrtimer functions Thomas Gleixner
2026-04-07 10:09 ` Peter Zijlstra
2026-04-07 11:41 ` Thomas Gleixner
2026-04-07 8:55 ` [patch 10/12] power: supply: charger-manager: Switch to alarmtimer_start() Thomas Gleixner
2026-04-07 10:11 ` Peter Zijlstra
2026-04-07 8:55 ` [patch 11/12] netfilter: xt_IDLETIMER: " Thomas Gleixner
2026-04-07 8:55 ` [patch 12/12] alarmtimer: Remove unused interfaces Thomas Gleixner
2026-04-07 20:21 ` John Stultz
2026-04-07 14:43 ` [patch 00/12] hrtimers: Prevent hrtimer interrupt starvation Thomas Gleixner
2026-04-07 16:17 ` Thomas Gleixner
2026-04-07 17:38 ` Calvin Owens
2026-04-07 18:03 ` Thomas Gleixner [this message]
2026-04-07 18:35 ` Calvin Owens
2026-04-07 20:58 ` Thomas Gleixner
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