From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-dy1-f175.google.com (mail-dy1-f175.google.com [74.125.82.175]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id B05F640DFD3 for ; Tue, 7 Apr 2026 18:35:37 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=74.125.82.175 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1775586938; cv=none; b=Wykzn+dKQ5VkXnovLtZbYMIMRC78u5N7AzEv47JI7Pq6uJ01Z3D1CDmoGGKElWjBzEqe5OYyzFnNAe1i1bW/8TA4L+WnrQAgRD3Wb7fYy9gegtf9ogCNsY85ed9hfO1/euPbDdFp9zZ3wdgVF3tTPBIHbOZ6JIfiAFLQBTLen5A= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1775586938; c=relaxed/simple; bh=RcSfW7BVL553lKbTf3prH24yb+XiZUw0mmz0Q+5e4Os=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=PRvsWgLF5grILOmrkzrdZhRa14zVdhW6vVu5iQN7ZuzaZ9B8+DRSbqOlG4ZHERcJk8bb2qD9qrEo7p+bp08wI8U3giPTJb5jTceZkr6cf3STKmBktP3CcYIL1AL/BzZD+E10enJcMzsj8c2Q8+8p30EhFWthz/OfHa04r8rOQkY= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=wbinvd.org; spf=pass smtp.mailfrom=wbinvd.org; dkim=pass (2048-bit key) header.d=wbinvd.org header.i=@wbinvd.org header.b=SumApEDL; arc=none smtp.client-ip=74.125.82.175 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=wbinvd.org Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=wbinvd.org Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=wbinvd.org header.i=@wbinvd.org header.b="SumApEDL" Received: by mail-dy1-f175.google.com with SMTP id 5a478bee46e88-2c156c4a9efso7019402eec.1 for ; Tue, 07 Apr 2026 11:35:37 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=wbinvd.org; s=wbinvd; t=1775586937; x=1776191737; darn=vger.kernel.org; h=in-reply-to:content-disposition:mime-version:references:message-id :subject:cc:to:from:date:from:to:cc:subject:date:message-id:reply-to; bh=eessS45c4d7a04OGsZRQetM2uu75g94y42hxsune8NQ=; b=SumApEDLqjM5oO+lZBfylVEo/xrFEJRxBukM94PfdKAw3xlu4lsPjIkko7r5vHQ2gq dovPz98PvB+1bC6E9oHpc9l6H1GcHxqmk8/QrZv6jf6QUPEV1qHRjd7yRNqCY+9vTifY m79Zleht9Sk2r5nAZLXxzyGtlqs7ENmw6PCVHYO5uQQSBH4iA+SsEfGaPlGN/urIXwv9 U5A8bPU3oC13bX8ILhr8Rkk2+/FXYIVEtQU96FSr2tBLB5T3TO12pOxLdR0OLqvVyMeR DBkF+JNvrapyfUyPToSBdI2VyPlHq3YdQ+rhH3DGy+S2BSvPVwxyIPEyMzDCUu0Q0jDd 6tOw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1775586937; x=1776191737; h=in-reply-to:content-disposition:mime-version:references:message-id :subject:cc:to:from:date:x-gm-gg:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=eessS45c4d7a04OGsZRQetM2uu75g94y42hxsune8NQ=; b=JnHWDnyE9UGyzq/mBmdn6TX/Sr17tkNlBtIcXTk7/pz0tnIwGuqMZGIG5APTFkaUG7 azF9h9AAJofjDK6HhwedXEjRSYQVeC+VihA/7s3no3ofT2guZfdYbumQ5mgDP7JGteCy sEophbAApSkI6dbUE3mMrG9l/DpqhCM5tICoFbgkMnR/W2RZ1Baa8pIpQIZUFEiaK4+l 3SJjfHQYezfxXgeInIsK4Vx2FcKR96gg++rslCQ9f1EUdjM2gFne7vV0sn2ynRqOCP30 NLBfpJ0XlzptQlGD7A0OaztEq4Ho5ipaATvzxxyleIErJvdWiH+rDdYxDZG7TfPzaMr0 QVhQ== X-Forwarded-Encrypted: i=1; AJvYcCXfwwTwKkoVd34S7UrsaNV2J4Ivoj3OT6BwKzg20OKjmN5/ALY+d8qiNs5OGcoTYFNTkK8GGllCEA==@vger.kernel.org X-Gm-Message-State: AOJu0YyacXDgU3GRM+ki4cbO/guYTI6QW9jXi7e+edDKVwS0nscgcvp4 3K3wwABp06x5omy+uB+B8jOogYBp7p9nixNLhaENjjZ9AoebLZEKK+60a88Hrex4Ao0= X-Gm-Gg: AeBDietTqiKMVeAOlkx0yqA1ozkKKP+QMyV/of4FFW0CAOnoNtFgCzcBYktURh8W9j4 jEJEF+LGRNsyV5oMMUqywjgs477sokIo1+L1wSGsT7EIMFYnx1Mwa3l0NqYdS6q0Nh+wUpIq7Fo nf2WYngbpGrEBXRiBo+UK+h9Ber/XDUv4jDqqYozq1Sp4CaFrDoT8e9wOSbENZ2jMVGXVwFB1sp /jSUMqhGxaHs+FANIO5sfFF4QDmGrw67wAUz9tvCWXN2TYgJzApnfCzKdc/KG4ysU/URmL815cB ocA4g3nWiMokk4axiih1t0aZDDC+kCPBCrno6wf4vQkoyR0cekpc4+L0GRxj5WLqN0xQTadRkX/ Q4DXxUGrrorlFgrz3fVyxMyKz/DE2jTkIpjT2RMzejBRhtcj+4Q1OGwueCuLhXPQ36Xs+Qfw5a8 n4f3PFJGQpxvpsTgvl9wMOics2tA== X-Received: by 2002:a05:7300:bc97:b0:2c3:b172:83c2 with SMTP id 5a478bee46e88-2cbfb995295mr8671700eec.20.1775586936793; 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-pm@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