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=1792688618; b=DScxw2ZzQaVw0LRNhJMJI3tf8c4N1vX3U3zAgzvZwZu6L1jzcEUzGbZCCrMk7H1t0BaU d+9i1aqhffof/XFhPrVaAaVZtExF2JmUUWXlX6RZLxe34IX8fkXLqau78E0UCW9mL+rlH J8Z22L4GJ31+8Makodi2fg3rJ+/bI7l9QYb9YxSVAUapwaevpoemqOk54PT5o2tLAIS/A DWGB6TE78cSeo26/ViTRSqvQZG4JHS6poU0llC202xeSFKtpblG2la7QyoOutXvRbHh8T r6YJk2evYwkgHzecnrEIk3BFZJP1xfU0c/EqfCnysFg0KuX/wYxAGPvNMNULRw14lTg== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1792688618; h=Received:DKIM-Signature:Message-ID:From:Subject:Reply-To:To:Cc: In-Reply-To:References:Content-Type:Content-Transfer-Encoding:Date; bh=JrKGO+G7y5FbmXtAJNTF6BY5mxEbr8zNjmTfX0pHq2A=; b=LH4pxDxPyx42wZTeB5D8Nz0TYnlsPK/f3avkPFGn3fhesWhxl4TYikXj8PHJdrc+pn2p B10opR+gM35xYrq1CnB29W7j8mhCc9vF0DJDIUcWANWfLHAX3qpYUIJjpq12x2Jm/7kQI pAYAHFJFzl6kAetln6dNGz0xgzPnoPy9iP7/Nuv/OIF4sgV4kih/N2epYh/qPeXo05tTP ZzjQDkwG+llruGYROcd4OZ6CRDnXyGTTRUPCzd/0qaRcVKT3fwOb9lY7fhPSiVV0CFd+8 vWEn8ba+B0ZL+YbxFlWNNW/n5rXexEOKcKKmPHQ2XpUxnDHhD32dlxxzBRznPqQSg1w== 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=JJ2Iyjt5; 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 8A4ED606A31A for ; Thu, 22 Oct 2026 17:03:38 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key, unprotected) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20260515 header.b=JJ2Iyjt5 Received: by smtp.kernel.org (Postfix) with ESMTPSA id 25EA41F01825; Thu, 22 Oct 2026 17:03:38 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1792688618; bh=JrKGO+G7y5FbmXtAJNTF6BY5mxEbr8zNjmTfX0pHq2A=; h=From:Subject:Reply-To:To:Cc:In-Reply-To:References:Date; b=JJ2Iyjt5l3VRRrgJ5mq6kZNuMOTv2z7gSxpHJUmOqpeM+3nMFsLFtM/jd16eH2uj7 hxnOw1jtwjLM379CgP7WRmkB5H6xWFt9ZD2PWen33qNt11QG93TeFjJhds9tq0a60b i86sKO7kzFC8v9kHNwkyICOqb1UF1USmf89rKXyr+6VZssidzEZj6pXV0gV9iOTReg NJeU1FJklZJL1nDUcppky4VjEMll89sffY92VFJP/hTAUX21JCx20hGBnQ2dtOV6G5 3zncz94lyG8SADuW9OTj9K1L2ntZ2OuuGZH4AcAYdiyYSJA64WbVMcRlDmK5qRFbk0 FV1A8EFYdUtDw== Message-ID: From: sashiko-bot@kernel.org Subject: Re: [PATCH v3 2/2] PCI: Add pci=nodpc kernel boot option Reply-To: sashiko-reviews@lists.linux.dev To: "Yury Murashka" Cc: linux-pci@vger.kernel.org In-Reply-To: <20261022165842.1463451-3-yurypm@arista.com> References: <20261022165842.1463451-1-yurypm@arista.com> <20261022165842.1463451-3-yurypm@arista.com> Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Date: Thu, 22 Oct 2026 17:03:37 +0000 X-Mailing-List: linux-pci@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list > Add pci=3Dnodpc to let Linux opt out of Downstream Port Containment (DPC) > and Error Disconnect Recover (EDR) support on systems where userspace > manages PCIe errors. >=20 > Skip DPC initialization, state operations, hotplug recovery checks, and > port service registration when disabled. Expose pci_dpc_available() so > ACPI negotiation and PCIe port service discovery honor the same policy. > Do not advertise EDR support or request DPC control through _OSC, and > prevent native-port overrides from reintroducing DPC ownership. >=20 > Skip EDR notifier installation before the DPC-enabling _DSM call. Merely > skipping the native DPC driver would allow EDR to enable hardware DPC > while the handler lacks the capability information needed to recover. >=20 > The option disables Linux participation in DPC and EDR; it does not turn > off firmware-owned DPC hardware. AER reporting and recovery remain > independent and can be controlled with their own boot options. >=20 > Signed-off-by: Yury Murashka Sashiko has reviewed this patch and found no issues. --=20 Sashiko AI review =C2=B7 https://sashiko.dev/#/patchset/20261022165842.1463= 451-1-yurypm@arista.com?part=3D2