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Tue, 07 Apr 2026 11:35:36 -0700 (PDT) Received: from mozart.vkv.me ([2001:5a8:468b:d015:412a:9f09:7acb:b69f]) by smtp.gmail.com with ESMTPSA id 5a478bee46e88-2cba5df5c24sm15982022eec.27.2026.04.07.11.35.35 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 07 Apr 2026 11:35:36 -0700 (PDT) Date: Tue, 7 Apr 2026 11:35:33 -0700 From: Calvin Owens To: Thomas Gleixner Cc: LKML , Peter Zijlstra , Anna-Maria Behnsen , Frederic Weisbecker , Ingo Molnar , John Stultz , Stephen Boyd , Alexander Viro , Christian Brauner , Jan Kara , linux-fsdevel@vger.kernel.org, Sebastian Reichel , linux-pm@vger.kernel.org, Pablo Neira Ayuso , Florian Westphal , Phil Sutter , netfilter-devel@vger.kernel.org, coreteam@netfilter.org Subject: Re: [patch 00/12] hrtimers: Prevent hrtimer interrupt starvation Message-ID: References: <20260407083219.478203185@kernel.org> <87ika24phf.ffs@tglx> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <87ika24phf.ffs@tglx> On Tuesday 04/07 at 20:03 +0200, Thomas Gleixner wrote: > 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 > > > > 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. Confirmed, [1/12] alone passes. Thanks, Calvin