From: Bjorn Helgaas <helgaas@kernel.org>
To: Marc Zyngier <maz@kernel.org>
Cc: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>,
Bjorn Helgaas <bhelgaas@google.com>,
Frank Wunderlich <frank-w@public-files.de>,
Thierry Reding <treding@nvidia.com>,
Thomas Gleixner <tglx@linutronix.de>,
Rob Herring <robh@kernel.org>, Will Deacon <will@kernel.org>,
"K. Y. Srinivasan" <kys@microsoft.com>,
Haiyang Zhang <haiyangz@microsoft.com>,
Stephen Hemminger <sthemmin@microsoft.com>,
Wei Liu <wei.liu@kernel.org>,
Thierry Reding <thierry.reding@gmail.com>,
Jonathan Hunter <jonathanh@nvidia.com>,
Ryder Lee <ryder.lee@mediatek.com>,
Marek Vasut <marek.vasut+renesas@gmail.com>,
Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>,
Michal Simek <michal.simek@xilinx.com>,
Paul Walmsley <paul.walmsley@sifive.com>,
linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-arm-kernel@lists.infradead.org,
linux-hyperv@vger.kernel.org, linux-tegra@vger.kernel.org,
linux-mediatek@lists.infradead.org,
linux-renesas-soc@vger.kernel.org
Subject: Re: [PATCH 00/13] PCI: MSI: Getting rid of msi_controller, and other cleanups
Date: Wed, 10 Mar 2021 13:29:58 -0600 [thread overview]
Message-ID: <20210310192958.GA2032926@bjorn-Precision-5520> (raw)
In-Reply-To: <20210225151023.3642391-1-maz@kernel.org>
On Thu, Feb 25, 2021 at 03:10:10PM +0000, Marc Zyngier wrote:
> The msi_controller data structure was the first attempt at treating
> MSIs like any other interrupt. We replaced it a few years ago with the
> generic MSI framework, but as it turns out, some older drivers are
> still using it.
>
> This series aims at converting these stragglers, drop msi_controller,
> and fix some other nits such as having ways for a host bridge to
> advertise whether it supports MSIs or not.
>
> A few notes:
>
> - The Tegra patch is the result of back and forth work with Thierry: I
> wrote the initial patch, which didn't work (I didn't have any HW at
> the time). Thierry made it work, and I subsequently fixed a couple
> of bugs/cleanups. I'm responsible for the result, so don't blame
> Thierry for any of it! FWIW, I'm now running a Jetson TX2 with its
> root fs over NVME, and MSIs are OK.
>
> - RCAR is totally untested, though Marek had a go at a previous
> version. More testing required.
>
> - The xilinx stuff is *really* untested. Paul, if you have a RISC-V
> board that uses it, could you please give it a go? Michal, same
> thing for the stuff you have at hand...
>
> - hyperv: I don't have access to such hypervisor, and no way to test
> it. Help welcomed.
>
> - The patches dealing with the advertising of MSI handling are the
> result of a long discussion that took place here[1]. I took the
> liberty to rejig Thomas' initial patches, and add what I needed for
> the MSI domain stuff. Again, blame me if something is wrong, and not
> Thomas.
>
> Feedback welcome.
>
> M.
>
> [1] https://lore.kernel.org/r/20201031140330.83768-1-linux@fw-web.de
>
> Marc Zyngier (11):
> PCI: tegra: Convert to MSI domains
> PCI: rcar: Convert to MSI domains
> PCI: xilinx: Convert to MSI domains
> PCI: hyperv: Drop msi_controller structure
> PCI: MSI: Drop use of msi_controller from core code
> PCI: MSI: Kill msi_controller structure
> PCI: MSI: Kill default_teardown_msi_irqs()
> PCI: MSI: Let PCI host bridges declare their reliance on MSI domains
> PCI: Make pci_host_common_probe() declare its reliance on MSI domains
> PCI: MSI: Document the various ways of ending up with NO_MSI
> PCI: quirks: Refactor advertising of the NO_MSI flag
>
> Thomas Gleixner (2):
> PCI: MSI: Let PCI host bridges declare their lack of MSI handling
> PCI: mediatek: Advertise lack of MSI handling
All looks good to me; I'm guessing Lorenzo will want to apply it or at
least take a look since the bulk of this is in the native host
drivers.
s|PCI: MSI:|PCI/MSI:| above (I use "PCI/<FEATURE>:" and "PCI: <driver>:")
s|PCI: hyperv:|PCI: hv:| to match previous practice
Maybe:
PCI: Refactor HT advertising of NO_MSI flag
since "HT" contains more information than "quirks"?
In the 03/13 commit log, s/appaling/appalling/ :)
In the patch, it sounds like the MSI capture address change might be
separable into its own patch? If it were separate, it would be easier
to see the problem/fix and watch for it elsewhere.
Acked-by: Bjorn Helgaas <bhelgaas@google.com>
> drivers/pci/controller/Kconfig | 4 +-
> drivers/pci/controller/pci-host-common.c | 1 +
> drivers/pci/controller/pci-hyperv.c | 4 -
> drivers/pci/controller/pci-tegra.c | 343 ++++++++++++-----------
> drivers/pci/controller/pcie-mediatek.c | 4 +
> drivers/pci/controller/pcie-rcar-host.c | 342 +++++++++++-----------
> drivers/pci/controller/pcie-xilinx.c | 238 +++++++---------
> drivers/pci/msi.c | 46 +--
> drivers/pci/probe.c | 4 +-
> drivers/pci/quirks.c | 15 +-
> include/linux/msi.h | 17 +-
> include/linux/pci.h | 4 +-
> 12 files changed, 463 insertions(+), 559 deletions(-)
>
> --
> 2.29.2
>
prev parent reply other threads:[~2021-03-10 19:30 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-02-25 15:10 [PATCH 00/13] PCI: MSI: Getting rid of msi_controller, and other cleanups Marc Zyngier
2021-02-25 15:10 ` [PATCH 01/13] PCI: tegra: Convert to MSI domains Marc Zyngier
2021-02-25 15:10 ` [PATCH 02/13] PCI: rcar: " Marc Zyngier
2021-02-28 18:48 ` Marek Vasut
2021-02-25 15:10 ` [PATCH 03/13] PCI: xilinx: " Marc Zyngier
2021-03-22 12:21 ` Lorenzo Pieralisi
2021-03-22 12:33 ` Michal Simek
2021-03-22 14:04 ` Marc Zyngier
2021-03-22 12:23 ` Lorenzo Pieralisi
2021-03-22 12:33 ` Michal Simek
2021-03-22 14:04 ` Marc Zyngier
2021-02-25 15:10 ` [PATCH 04/13] PCI: hyperv: Drop msi_controller structure Marc Zyngier
2021-03-01 4:24 ` Michael Kelley
2021-02-25 15:10 ` [PATCH 05/13] PCI: MSI: Drop use of msi_controller from core code Marc Zyngier
2021-02-25 15:10 ` [PATCH 06/13] PCI: MSI: Kill msi_controller structure Marc Zyngier
2021-02-25 15:10 ` [PATCH 07/13] PCI: MSI: Kill default_teardown_msi_irqs() Marc Zyngier
2021-02-25 15:10 ` [PATCH 08/13] PCI: MSI: Let PCI host bridges declare their lack of MSI handling Marc Zyngier
2021-02-25 15:10 ` [PATCH 09/13] PCI: mediatek: Advertise " Marc Zyngier
2021-03-01 10:43 ` Aw: " Frank Wunderlich
2021-03-01 11:49 ` Marc Zyngier
2021-03-01 12:16 ` Aw: " Frank Wunderlich
2021-03-01 13:31 ` Marc Zyngier
2021-03-01 14:06 ` Aw: " Frank Wunderlich
2021-03-02 10:35 ` Robin Murphy
2021-02-25 15:10 ` [PATCH 10/13] PCI: MSI: Let PCI host bridges declare their reliance on MSI domains Marc Zyngier
2021-02-25 15:10 ` [PATCH 11/13] PCI: Make pci_host_common_probe() declare its " Marc Zyngier
2021-02-25 15:10 ` [PATCH 12/13] PCI: MSI: Document the various ways of ending up with NO_MSI Marc Zyngier
2021-02-25 15:10 ` [PATCH 13/13] PCI: quirks: Refactor advertising of the NO_MSI flag Marc Zyngier
2021-03-10 19:29 ` Bjorn Helgaas [this message]
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