From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 E16A71891AB; Tue, 28 Oct 2025 22:52:38 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1761691959; cv=none; b=agg1ERi2Rtw8aS7GXih6fqNKA9a/L9xGazGJDAcckQ2QZPpZ9IgorcbcmE5AOo4cVnp7U3nWpQ7jUZm3HAoswvFRCY37/MErd1NV2A2bnEaItBGyMKWd2VdGUY2KDgzduceePwsTv40vnJ/Hu016mu9bNrmjdCdn9d8nzxLOjA0= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1761691959; c=relaxed/simple; bh=TNnW1dnHBXsXUZ1jykN7QcAKz/sH0V9weWlESLyPygM=; h=Date:From:To:Cc:Subject:Message-ID:MIME-Version:Content-Type: Content-Disposition:In-Reply-To; b=hcqQe6SjqPz6TkIcn3/zqs/UsE76RVQgY0HB1MzqsPIczsMLM/6cKJsmIGuzZ9IJwWSZoZCGI2l5nXQUimyY3QjtpslsQKZE7L2y6mxPerkluRnpqjC20p6Y/5+kSwOX59M5q3ca0bNeY0FXKccCMKrXwA+0pg3OTNjB0ctFqw8= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=oHxhyjNy; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="oHxhyjNy" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 492F7C4CEE7; Tue, 28 Oct 2025 22:52:38 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1761691958; bh=TNnW1dnHBXsXUZ1jykN7QcAKz/sH0V9weWlESLyPygM=; h=Date:From:To:Cc:Subject:In-Reply-To:From; b=oHxhyjNyr1rkjEm1QLuow6XhjdlOr8aHUBRvxrxbty01SDtmXmHjfn/xyEehrRdee yMOgZTwvFxIOBOmBkU2B3FliAkNdnPpRTszsfiz1SM5gP+fruTwD8dSKATrP2Vzqsz 41eXfhuTv7bOlq/CA28iQkA6XmMGJAQROzUVLJ0QWObaMcflOOR1ndSM4oyN8T02qF 9vq8h2iY3n0M0QAReo+goNRPl6IgkNM4nrcPT1FBXV8X0fGV1nUEDfEpK9qfRx6FX4 jlPHjGn+r9/2B8Xvvo6G2de+J0BcjA9j5ZtXTGr5t81C0o9niOjPLn+Dftun1FLb/7 y2VP6ZfDlUXJQ== Date: Tue, 28 Oct 2025 17:52:37 -0500 From: Bjorn Helgaas To: Kenneth Crudup Cc: inochiama@gmail.com, tglx@linutronix.de, bhelgaas@google.com, unicorn_wang@outlook.com, linux-pci@vger.kernel.org, Genes Lists , Jens Axboe , Todd Brandt , regressions@lists.linux.dev Subject: Re: commit 54f45a30c0 ("PCI/MSI: Add startup/shutdown for per device domains") causing boot hangs on my laptop Message-ID: <20251028225237.GA1539571@bhelgaas> 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: <20251013211939.GA865451@bhelgaas> On Mon, Oct 13, 2025 at 04:19:39PM -0500, Bjorn Helgaas wrote: > [+cc regressions like I meant to do the first time] > > On Mon, Oct 13, 2025 at 04:18:16PM -0500, Bjorn Helgaas wrote: > > [+cc Gene, Jens, Todd] > > > > On Thu, Oct 02, 2025 at 10:04:17AM -0700, Kenneth Crudup wrote: > > > > > > I'm running Linus' master (as of 7f7072574). > > > > > > I bisected it to the above named commit (but had to back out ba9d484ed3 > > > (""PCI/MSI: Remove the conditional parent [un]mask logic") and then > > > 727e914bbfbbd ("PCI/MSI: Check MSI_FLAG_PCI_MSI_MASK_PARENT in > > > cond_[startup|shutdown]_parent()") first for a clean revert.) > > > > > > I have a Dell XPS-9320 laptop, and booting would hang before it switched to > > > the xe video driver from the EFI FB driver (not sure if this is a symptom or > > > partial cause) and I'd see a message akin to "not being able to set up DP > > > tunnels, destroying" as the last thing printed before it hangs. (If it's > > > important to see those messages I believe I can force a pstore crash to get > > > them where they can be saved off, let me know). > > #regzbot introduced: 54f45a30c0 ("PCI/MSI: Add startup/shutdown for per device domains") > #regzbot link: https://lore.kernel.org/all/3152ca947e89ee37264b90c422e77bb0e3d575b9.camel@sapience.com/ > #regzbot link: https://bugzilla.kernel.org/show_bug.cgi?id=220658 #regzbot fix: e433110eb5bf ("PCI: vmd: Override irq_startup()/irq_shutdown() in vmd_init_dev_msi_info()")