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 2ECF13B14C7 for ; Fri, 10 Jul 2026 21:33:43 +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=1783719225; cv=none; b=GnNoNBrsWFOWLW00h3GIHbW5Sbu+d+Gd80mt9H8HrOvsMgxvMXry9wfE2+yAUwSDlqXQciGUx46PZ12HzQBErY6lAcfwfl7h9kLhQYX2T3x9C1krpz+HNpFh0Xi6ow3XAtOJ9yjwz1G1jzgEijYOF9OirSJ599V3Vsy12WYaZFc= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1783719225; c=relaxed/simple; bh=6LmSquj9M4q9qtc8osyoepfWn56LV8tBQn+0BYG6wFw=; h=From:Subject:To:Cc:In-Reply-To:References:Content-Type:Date: Message-Id; b=lsEPnFGUz113ZW/ZUf8JL9Y21SdqTHECJqKg6moz2vBceE3J0lnMnYJ6xVpCcehJVAsFYgFg+8W7JK0sZDFLULWM6tb9ISXuBzShYkz/SWOD4Uz5S3IoDbExkbl0H3rbRNHGcNccIxhlbqZtZt/xO74t89xQ4fGGhiheKwkPB/A= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=DwOOJYsM; 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="DwOOJYsM" Received: by smtp.kernel.org (Postfix) with ESMTPSA id A596C1F000E9; Fri, 10 Jul 2026 21:33:43 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1783719223; bh=6LmSquj9M4q9qtc8osyoepfWn56LV8tBQn+0BYG6wFw=; h=From:Subject:Reply-To:To:Cc:In-Reply-To:References:Date; b=DwOOJYsMSTybOP7XsS7Fsa4095qkOExXRbvQxKLrguqKDz0YbXePuqujBsB2dh3uD uQSaLmiIdJUrPHHeAS+h3EAbAHkLCfypH3EU+gqxIGruo7y1i1UZ/DOClw+poW6iSr TUQULF+hTsDBB1wAKFFiNud/T6ZiUjIk/dSwg8bPhe8H/snVu6yBtpjvdHlF+BRB8S pOtsrlwAgtshAaTuVeQFu0ucnKIGHVQSFBsPPyMZFLdlhdExw8ed0ul22IymP1/HBH WicmwRIHKcjhlULmbfcr1xLpTZqVaxsT5oXBidZTcVCTRro9El5/gp6KBZZqu5bayf uFY8saXRHW5Gg== From: sashiko-bot@kernel.org Subject: Re: [PATCH v7 06/12] PCI: liveupdate: Auto-preserve upstream bridges across Live Update Reply-To: sashiko-reviews@lists.linux.dev To: "David Matlack" Cc: linux-pci@vger.kernel.org In-Reply-To: <20260710212616.1351130-7-dmatlack@google.com> References: <20260710212616.1351130-1-dmatlack@google.com> <20260710212616.1351130-7-dmatlack@google.com> Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Date: Fri, 10 Jul 2026 21:33:43 +0000 Message-Id: <20260710213343.A596C1F000E9@smtp.kernel.org> 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 > 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/20260710212616.1351= 130-1-dmatlack@google.com?part=3D6