From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from bmailout2.hostsharing.net (bmailout2.hostsharing.net [83.223.78.240]) (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 2FE4F1FA1 for ; Sat, 1 Jun 2024 07:28:06 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=83.223.78.240 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1717226891; cv=none; b=jbrOGzB90LtbpAnhYH1JkfGQQs9385sMqvpbiHQKec3ufaMOrgwnR3//roJhEIBRfkbVTyke1RuzhUOCLxXqvNvPqG/9Iqbhv/tTNtIzS0JTNWckPy+ZrqQRJXCYSUaHWHPkZ3wIENAfAqpW1F+0xy1MQc1WkOJUDMKNPi2VReA= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1717226891; c=relaxed/simple; bh=d9mbdW8TbVNFyraHdNdpYcvb44Nh82nZjKPJEpMy9g8=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=nYwHUUDaxw8oT1YEPO9RV4WiOWV5BpBhoo8Q36MSlB/cNXRH3bxS4Ef2qYAdbQeeY9HKOc2yyIFSa+z09KVDeNiCcCq91vSqEi4q2GiwvYpbmU1vayXi/kkY3BhgxQjF+MQyBPs2TNVKrTA7PbrGjmRosYG5+e471z3Ny3mvHO8= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=wunner.de; spf=none smtp.mailfrom=h08.hostsharing.net; arc=none smtp.client-ip=83.223.78.240 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=wunner.de Authentication-Results: smtp.subspace.kernel.org; spf=none smtp.mailfrom=h08.hostsharing.net Received: from h08.hostsharing.net (h08.hostsharing.net [83.223.95.28]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 client-signature RSA-PSS (4096 bits) client-digest SHA256) (Client CN "*.hostsharing.net", Issuer "RapidSSL TLS RSA CA G1" (verified OK)) by bmailout2.hostsharing.net (Postfix) with ESMTPS id 15CDA2800BDB3; Sat, 1 Jun 2024 09:27:59 +0200 (CEST) Received: by h08.hostsharing.net (Postfix, from userid 100393) id EAA3A357A76; Sat, 1 Jun 2024 09:27:58 +0200 (CEST) Date: Sat, 1 Jun 2024 09:27:58 +0200 From: Lukas Wunner To: alan.adamson@oracle.com Cc: linux-pci@vger.kernel.org, jonathan.derrick@linux.dev Subject: Re: Spurious DLLSC on a x4x4 NVMe Message-ID: References: Precedence: bulk X-Mailing-List: linux-pci@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: On Fri, May 31, 2024 at 02:11:56PM -0700, alan.adamson@oracle.com wrote: > Back in 2021/2022 there where discussions about issues when hot removing a > bifurcated x4x4 device from a x8 slot. I could not find any resolution or > applied fix for this. > > https://patchwork.kernel.org/project/linux-pci/patch/20210830155628.130054-1-jonathan.derrick@linux.dev/ > > Was there ever a resolution? No, there wasn't. I proposed a patch in this e-mail: https://lore.kernel.org/linux-pci/20220924073208.GA26243@wunner.de/ ...but it seems nobody actually tested it for the bifurcation use case. Thanks, Lukas