From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 478D023EAB9; Mon, 27 Oct 2025 10:07:48 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1761559669; cv=none; b=hKsexPFCGMfPSGBaUOrpA5312g1dyxf0D7mLTXRF8Nd67Yhaas9PkzPs7WwXkFCWyHqN5UFTAPzeY00uJIndXqpRjMbNNs2KQGvxx8Hn0wvM8WyfLZi/16QN6vTwdva0DvwLHZ3oXflvSswHe0AXIBMW34bIVbcMze4gB9J65dI= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1761559669; c=relaxed/simple; bh=gYH15C0Zx3xImMUg00MAivmQVJErsxHFY89b2ystD7w=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=TE3FriCOKoYxuHQOYXOkbxu9nC9mlsErX1UwHqCSNTr/WhUh8RVPKhVWnIFVXIWi8ZABDF9hpYkPYHct7UHCqgcyqlwZ03+uYkZVPIZXYUQNkRfzTJIUZu9mFMtR7d32nRJGAm7iCrVmOMYNt/DhMj5wplbiaCvA1qfgMrzvVpY= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=cX+PXi9/; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="cX+PXi9/" Received: by smtp.kernel.org (Postfix) with ESMTPSA id C5675C4CEF1; Mon, 27 Oct 2025 10:07:48 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1761559668; bh=gYH15C0Zx3xImMUg00MAivmQVJErsxHFY89b2ystD7w=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=cX+PXi9/8m1/+zRXnI4SGanJoiQTLozQT7QNvV+sOaNOo1/NXBrK9++7PqqprT2nQ qaoSJYkdZdf1v9WM9+SstKga4E2/LyJ+UO4dNNqpBONKc0E8aBfneM58niYtzE+0mj NwTxaj22tH/bx5Km47rCI0mJC1Bvo9mswORntpZPWBQZKfdW/H7EH318rFuWvRVtkB UbFMqGVrOftWv/gof1OpHIo8cGptU56/dTySfYwMX6NE/CTXqJYugNqwGrFsNJqofr W/9A3QNg/KqkH4qP3glxaME1FrAeabbT1kRdEIj2hkVt0yJ9GwD0ADyKYQ011T+byP dwVPpm82nFVwA== Received: from johan by xi.lan with local (Exim 4.98.2) (envelope-from ) id 1vDK8l-000000006fl-2vmW; Mon, 27 Oct 2025 11:07:51 +0100 Date: Mon, 27 Oct 2025 11:07:51 +0100 From: Johan Hovold To: Bjorn Helgaas Cc: Manivannan Sadhasivam , linux-pci@vger.kernel.org, Manivannan Sadhasivam , Krzysztof =?utf-8?Q?Wilczy=C5=84ski?= , Frank Li , Shawn Lin , Rob Herring , "David E . Box" , Kai-Heng Feng , "Rafael J . Wysocki" , Heiner Kallweit , Chia-Lin Kao , Gustavo Pimentel , Han Jingoo , Bjorn Andersson , Konrad Dybcio , Bartosz Golaszewski , linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org, Bjorn Helgaas Subject: Re: [PATCH] Revert "PCI: qcom: Remove custom ASPM enablement code" Message-ID: References: <20251026193754.GA1432729@bhelgaas> 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=us-ascii Content-Disposition: inline In-Reply-To: <20251026193754.GA1432729@bhelgaas> On Sun, Oct 26, 2025 at 02:37:54PM -0500, Bjorn Helgaas wrote: > On Sun, Oct 26, 2025 at 08:58:29PM +0530, Manivannan Sadhasivam wrote: > As far as I know, it's L1SS that has catastrophic effects. I haven't > seen anything for L0s or L1. Enabling L0s unconditionally certainly blew up on some Qualcomm machines. See commit d1997c987814 ("PCI: qcom: Disable ASPM L0s for sc8280xp, sa8540p and sa8295p"). Johan