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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
In-Reply-To: <adVA_uv1srA_bsKj@mozart.vkv.me>
References: <20260407083219.478203185@kernel.org>
 <adVA_uv1srA_bsKj@mozart.vkv.me>
Date: Tue, 07 Apr 2026 20:03:40 +0200
Message-ID: <87ika24phf.ffs@tglx>
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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