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 8DC2F2AD3E; Wed, 23 Jul 2025 11:39:14 +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=1753270754; cv=none; b=C/yEZbcyCQtL4Ama/qxzFPsbJRxy2jIF/PlgP26sGTSa5cSNiz4ryrD8tRoiY8mrjniNkEdk2TtKSjjCtnp2FIZ/vf9Sja4zdcGdr/9UgM4Tf4gj9byBjkRFJZGs9T239qx9AnPdAYVyb+Uwxi4lgy3FP/Ag9LI1BhMSPgkqfA4= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1753270754; c=relaxed/simple; bh=m8FyO70WVcGbmv2de5R4u32YsJtbHj03aCoX4C4Jg/U=; h=Date:From:To:Cc:Subject:Message-ID:MIME-Version:Content-Type: Content-Disposition:In-Reply-To; b=jNVFvVQIuIP38Wu7rNZnWMICDe4Vmt0sxmNI7aABO8Rl0iRruo5iV39IZIJQMCQq4nDwJUq/262WZhjXbWtyK4hbhyj6bOPKFEVXTmBpqBIU/ur2xIRD6PKBQu4aoMDlfSf6o13pNDpB3O5e+Sfk1L8XlYULqhx97JkkFQgTlAY= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=uSSjdR7k; 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="uSSjdR7k" Received: by smtp.kernel.org (Postfix) with ESMTPSA id DD506C4CEE7; Wed, 23 Jul 2025 11:39:13 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1753270754; bh=m8FyO70WVcGbmv2de5R4u32YsJtbHj03aCoX4C4Jg/U=; h=Date:From:To:Cc:Subject:In-Reply-To:From; b=uSSjdR7kJvBQ88qLPTtylG1pXPiir85MEGShW3/iE9k1mkMJuSiULLVwfPvIIiXIO UGCmjn0WEmcO1hcC8YF7rLkrKv+CK7iLaPwGOJjy8kuvssWOSDpLZD559XfI+Numd2 XIYxK7Uos6m8Z7+aoE/HX9he0vFTqrSCond7wuClqsQ1aajh1QzgQScvXnvrcDcJJj yot5nuHNwyLKOrEWZAie1EjPYnD8fw9yAokUorA28zg9bNtGH+MFnrQTsWiEqmglqi LNy6+MMDYG3a4wXFJ9dsN0zx2c767gZsUMM4wksXI1oSDdK0412+30ofinU7B7vLkM ae3QBidKz4DqA== Date: Wed, 23 Jul 2025 06:39:12 -0500 From: Bjorn Helgaas To: Madhavan Srinivasan Cc: Michael Ellerman , Mahesh J Salgaonkar , linuxppc-dev , linux-kernel , linux-pci , christophe leroy , Naveen N Rao , Bjorn Helgaas , Shawn Anastasio , Timothy Pearson Subject: Re: [PATCH v3 0/6] PowerNV PCIe Hotplug Driver Fixes Message-ID: <20250723113912.GA2880767@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: <97289b39-ca4b-47ac-af81-c5223932ff63@linux.ibm.com> On Wed, Jul 23, 2025 at 04:30:18PM +0530, Madhavan Srinivasan wrote: > > > On 7/23/25 2:17 AM, Bjorn Helgaas wrote: > > On Thu, Jul 17, 2025 at 06:27:52PM -0500, Bjorn Helgaas wrote: > >> On Tue, Jul 15, 2025 at 04:31:49PM -0500, Timothy Pearson wrote: > >>> Hello all, > >>> > >>> This series includes several fixes for bugs in the PowerNV PCIe hotplug > >>> driver that were discovered in testing with a Microsemi Switchtec PM8533 > >>> PFX 48xG3 PCIe switch on a PowerNV system, as well as one workaround for > >>> PCIe switches that don't correctly implement slot presence detection > >>> such as the aforementioned one. Without the workaround, the switch works > >>> and downstream devices can be hot-unplugged, but the devices never come > >>> back online after being plugged in again until the system is rebooted. > >>> Other hotplug drivers (like pciehp_hpc) use a similar workaround. > >>> > >>> Also included are fixes for the EEH driver to make it hotplug safe, > >>> and a small patch to enable all three attention indicator states per > >>> the PCIe specification. > >>> > >>> Thanks, > >>> > >>> Shawn Anastasio (2): > >>> PCI: pnv_php: Properly clean up allocated IRQs on unplug > >>> PCI: pnv_php: Work around switches with broken presence detection > >>> > >>> Timothy Pearson (4): > >>> powerpc/eeh: Export eeh_unfreeze_pe() > >>> powerpc/eeh: Make EEH driver device hotplug safe > >>> PCI: pnv_php: Fix surprise plug detection and recovery > >>> PCI: pnv_php: Enable third attention indicator state > >>> > >>> arch/powerpc/kernel/eeh.c | 1 + > >>> arch/powerpc/kernel/eeh_driver.c | 48 ++++-- > >>> arch/powerpc/kernel/eeh_pe.c | 10 +- > >>> arch/powerpc/kernel/pci-hotplug.c | 3 + > >>> drivers/pci/hotplug/pnv_php.c | 244 +++++++++++++++++++++++++++--- > >>> 5 files changed, 263 insertions(+), 43 deletions(-) > >> > >> I'm OK with this from a PCI perspective, and I optimistically put it > >> on pci/hotplug. > >> > >> I'm happy to merge via the PCI tree, but would need acks from the > >> powerpc folks for the arch/powerpc parts. > >> > >> Alternatively it could be merged via powerpc with my ack on the > >> drivers/pci patches: > >> > >> Acked-by: Bjorn Helgaas > >> > >> If you do merge via powerpc, I made some comment formatting and commit > >> log tweaks that I would like reflected in the drivers/pci part. These > >> are on > >> https://git.kernel.org/pub/scm/linux/kernel/git/pci/pci.git/log/?h=hotplug > > > > Powerpc folks: let me know how you want to handle this. I haven't > > included it in pci/next yet because I don't have acks for the > > arch/powerpc parts. > > Patchset looks fine to be. > > I am fine to take it via my tree since I already have your Acked-by. OK, I'll assume this will be merged via your tree. Please cherry-pick the drivers/pci patches from my tree to preserve my tweaks. I moved them from pci/hotplug to pci/hotplug-pnv_php: https://git.kernel.org/pub/scm/linux/kernel/git/pci/pci.git/log/?h=hotplug-pnv_php