From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (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 6A4445187FF for ; Tue, 13 Oct 2026 16:41:32 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1791909693; cv=none; b=uVSE1G9XnsbFFp7CsH5r976nlr1XpLYTASn2MlNbuRRxix1f4Rba5Ldh6XDOqx38ItW7pyBRySvirgLXD03M4N9cwOVjtciNiTAi+m4XfkBjMEfaR3c7wgUuMpamn5kLc3htUa1hkWdcJygB31B3TdOam9PT26DgfIq3vDSUzBg= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1791909693; c=relaxed/simple; bh=gvPKHDZ9PXmqAfRqRoBQE5C1e2Kg8stYE+1iBXMRupg=; h=Message-ID:From:Subject:To:Cc:In-Reply-To:References:Content-Type: Date; b=FS1HROoRf/R1cCLOq81hIFA8NszYKv3c1GrcUYKWLiHA4qrSGwDBH3g3Z75cWk+TWzKwfALOwbcsyJpbTxGtR/vjB6z6YsPRaXdXjSGtNP9shauaNig1zQGmGhhqUqtm2A4SzvtL7GkBqQXjaIVxsOmaPIFtyGDABCtqoDDksH8= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=hGtD6FS2; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="hGtD6FS2" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 188B41F000FF; Tue, 13 Oct 2026 16:41:31 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1791909692; bh=gvPKHDZ9PXmqAfRqRoBQE5C1e2Kg8stYE+1iBXMRupg=; h=From:Subject:Reply-To:To:Cc:In-Reply-To:References:Date; b=hGtD6FS2Z0u2Iz2gXS/7rWoxt7Y92I+e9s6jHrwSrB68GEzWkxaDgRt/Jn6poQPqL APIvg2tJGphgf1wmaE4IGKqWSw8JjBU2jNU5rIl5hvjwQTa7T6B2RMcm+CNqE+/IYO TXSJ8vYplnPF6UWmOwRewK93sQ1R06O/ygIRAJn2jgV5JQuecxROzszbPu7W2jAheZ e3coj81KRh9LUnCTQn9XUYWj/ZlITAGeVn4Hgm36dodOYxrjEGur6R5WPdt9dTprT1 ysrUACReRQUVQmypoMkjz5ug2jiv+HcxDpkscOXr2+WIGc/AGllHu47ZW5ewoiOejx jUeURDmOYOvSg== Message-ID: From: sashiko-bot@kernel.org Subject: Re: [PATCH v10 05/13] PCI: liveupdate: Auto-preserve upstream bridges across Live Update Reply-To: sashiko-reviews@lists.linux.dev To: "David Matlack" , kexec@lists.infradead.org, linux-pci@vger.kernel.org Cc: "Adithya Jayachandran" , "Alexander Graf" , "Alex Williamson" , "Bjorn Helgaas" , "Chris Li" , "David Rientjes" , "Jacob Pan" , "Jason Gunthorpe" , "Jonathan Corbet" , "Josh Hilke" , "Leon Romanovsky" , "Lukas Wunner" , "Mike Rapoport" , "Parav Pandit" , "Pasha Tatashin" , "Pranjal Shrivastava" , "Pratyush Yadav" , "Randy Dunlap" , "Saeed Mahameed" , "Samiullah Khawaja" , "Shuah Khan" , "Vipin Sharma" , "William Tu" , "Yi Liu" In-Reply-To: <20261013162529.1928093-6-dmatlack@google.com> References: <20261013162529.1928093-1-dmatlack@google.com> <20261013162529.1928093-6-dmatlack@google.com> Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Date: Tue, 13 Oct 2026 16:41:30 +0000 Precedence: bulk X-Mailing-List: linux-pci@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: > When a PCI device is preserved across a Live Update, all of its upstream > bridges up to the root port must also be preserved. This enables the PCI > core and any drivers bound to the bridges to manage bridges correctly > across a Live Update. >=20 > Notably, this will be used in subsequent commits to ensure that > preserved devices can continue performing memory transactions without a > disruption or change in routing. >=20 > To preserve bridges, the PCI core tracks the number of downstream > devices preserved under each bridge using a reference count in struct > pci_dev_ser. This allows a bridge to remain preserved until all its > downstream preserved devices are unpreserved or finish their > participation in the Live Update. >=20 > Reviewed-by: Pasha Tatashin > Reviewed-by: Pranjal Shrivastava > Signed-off-by: David Matlack Sashiko has reviewed this patch and found no issues. It looks great! --=20 Sashiko AI review =C2=B7 https://sashiko.dev/#/patchset/20261013162529.1928= 093-1-dmatlack@google.com?part=3D5