From mboxrd@z Thu Jan 1 00:00:00 1970 Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.remote-ip=100.103.45.18 ARC-Seal: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; cv=none; t=1794346382; b=xs939tCheiyIvitgzpUSO7ZWTbrHyt0uo5kSxvke8hDiNnR2ZdlwzHeL36JWJERw6RlO RxMiz1Tu3KI0qkhb+7jEw8psoqXuZ+Qywbw/vX9W+4dYuOkwgxs2Km5QwExwz6k33FfXH sZNhiige4BctnvDYzKmguIfOCKWo3ZUKrtKAaDuieBovMcw/S4x/boRK7VWnUXap2IhJj NhsQEZKzn+4bSW4FRuMNPC4wMjLlGUiQZS+usHgwDRJE8zkAaMb1XXD+M4rYKwIihm+b2 CRp410BPmdDyF55XBLjgLXTXAfqQueA9BYEtZ+Y2SxH2Vg1b7evFpZymaAcBCOa5PNg== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1794346382; h=Received:DKIM-Signature:Message-ID:From:Subject:Reply-To:To:Cc: In-Reply-To:References:Content-Type:Content-Transfer-Encoding:Date; bh=nWGDoIpeR7JV3zctK2LkyVldby4FTDkgu+WwCEhQEkQ=; b=Bruk3A35FPjOGcEMMFglNZ1sBI5qZky0CLfql6tXpv8PjJiFUkXCZ7/FKF6nH4C1PrkI eCwNKAFRqLFtfVnIcA75l2+dvvPq+OfJHad8gdubyDQh+DXoXzhQcU5Xprlqle8L06jdS vQT1nlmfbY1ILRMFW5GUVRMuS84LyKx6uzdUwcf4WB9L/uPFqKUeHI6NIEMKRAq8If0p2 5S85vG1Qj6fg6UERo4s/lsltKsBHMNMSSEhtvkGdmqRb8DQPER7rrMfpeBPyrmhIOQWO3 8NE+D2EhLQ3QIuBMvkNcjF/4cSDG0PvVnE9J6b3TOxG7omNahtsUlPl1HbfGC6sbBbQ== ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20260515 header.b="MWWy/3c3"; arc=none smtp.remote-ip=100.103.45.18 Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (prime256v1)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 47C03606A320 for ; Tue, 10 Nov 2026 21:33:02 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20260515 header.b=MWWy/3c3 Received: by smtp.kernel.org (Postfix) with ESMTPSA id AFFFE1F0089F; Tue, 10 Nov 2026 21:33:01 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1794346381; bh=nWGDoIpeR7JV3zctK2LkyVldby4FTDkgu+WwCEhQEkQ=; h=From:Subject:Reply-To:To:Cc:In-Reply-To:References:Date; b=MWWy/3c3kyC41QuwZad4ET1KDiBGt03ggfXgRWLgHdIpp8I9yzV2G0PyWKp8J5ZsI IoDeW8pdxoKfbvbPLYvCk5Lfda4Th+ET2rFX8YweSoNHA8i+k98MImVnMppYt1mUCp 68QpdsMN9mn07I9DSojvPDV4QgwURl2SA+WjjNZG71tgZ5TGXOnpjakQsDkR75/CzD as0T0NE99A66oLMcPSe57EelvMiu42Xc6DCUJQx19+iKIaQqBnDYB7/ccvNLqjOi3Q 5oJIby7XNG8U8ma0C6mzAgubyKXn1GM9Q3KV7qeCtRDOCcet87bJg+ZeDrzWaZP7XH +HaV60iFlIcaA== Message-ID: From: sashiko-bot@kernel.org Subject: Re: [PATCH v4] pci: Add broken-GPE quirk for some Lenovo Legions with Nvidia GPUs Reply-To: sashiko-reviews@lists.linux.dev To: "Ryan Brue" Cc: linux-pci@vger.kernel.org In-Reply-To: <20261110-broken-gpe-legion-v4-1-c672bb1c4d91@gmail.com> References: <20261110-broken-gpe-legion-v4-1-c672bb1c4d91@gmail.com> Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Date: Tue, 10 Nov 2026 21:33:01 +0000 X-Mailing-List: linux-pci@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list > From: Lyude Paul >=20 > On certain Lenovo Legion devices (including the 16APH8, 16AHP9, and > 15AHP9), the firmware appears to enjoy firing a GPE on the parent PCIe > port of the nvidia GPU very shortly after the GPU enters D3Cold. This mea= ns > that every time the GPU is runtime suspended, ACPI firmware immediately > wakes up its parent PCIe port, which then wakes up the GPU. Once it falls > asleep again, the cycle repeats. >=20 > Note, this bug doesn't require Nvidia's driver. It happens on nouveau and > nova as well, and it even seems possible for this to happen without any > driver loaded. >=20 > This seems to simply be a bug. Luckily, there is nothing that we actually > need ACPI wakeup events for on the GPU. Events such as display connector > hotplug events in D3Cold come through as ACPI_VIDEO events which aren't > affected by this quirk. >=20 > Reported-by: Ryan Brue > Link: https://github.com/NVIDIA/open-gpu-kernel-modules/issues/905 > Co-developed-by: Ryan Brue > Signed-off-by: Ryan Brue > Signed-off-by: Lyude Paul Sashiko has reviewed this patch and found no issues. --=20 Sashiko AI review =C2=B7 https://sashiko.dev/#/patchset/20261110-broken-gpe= -legion-v4-1-c672bb1c4d91@gmail.com?part=3D1