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Date:   Mon, 22 Mar 2021 14:04:48 +0000
Message-ID: <87lfafgu7z.wl-maz@kernel.org>
From:   Marc Zyngier <maz@kernel.org>
To:     Michal Simek <monstr@monstr.eu>
Cc:     Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>,
        michal.simek@xilinx.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>,
        Paul Walmsley <paul.walmsley@sifive.com>,
        linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org,
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        linux-tegra@vger.kernel.org, linux-mediatek@lists.infradead.org,
        linux-renesas-soc@vger.kernel.org
Subject: Re: [PATCH 03/13] PCI: xilinx: Convert to MSI domains
In-Reply-To: <74cffc38-df12-7d92-1bfe-20eed4b60e86@monstr.eu>
References: <20210225151023.3642391-1-maz@kernel.org>
        <20210225151023.3642391-4-maz@kernel.org>
        <20210322122100.GA11469@e121166-lin.cambridge.arm.com>
        <74cffc38-df12-7d92-1bfe-20eed4b60e86@monstr.eu>
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On Mon, 22 Mar 2021 12:33:10 +0000,
Michal Simek <monstr@monstr.eu> wrote:
> 
> Hi,
> 
> On 3/22/21 1:21 PM, Lorenzo Pieralisi wrote:
> > On Thu, Feb 25, 2021 at 03:10:13PM +0000, Marc Zyngier wrote:
> >> In anticipation of the removal of the msi_controller structure, convert
> >> the ancient xilinx host controller driver to MSI domains.
> >>
> >> We end-up with the usual two domain structure, the top one being a
> >> generic PCI/MSI domain, the bottom one being xilinx-specific and handling
> >> the actual HW interrupt allocation.
> >>
> >> This allows us to fix some of the most appaling MSI programming, where
> >> the message programmed in the device is the virtual IRQ number instead
> >> of the allocated vector number. The allocator is also made safe with
> >> a mutex. This should allow support for MultiMSI, but I decided not to
> >> even try, since I cannot test it.
> >>
> >> Also take the opportunity to get rid of the cargo-culted memory allocation
> >> for the MSI capture address. *ANY* sufficiently aligned address should
> >> be good enough, so use the physical address of the xilinx_pcie_host
> >> structure instead.
> >>
> >> Signed-off-by: Marc Zyngier <maz@kernel.org>
> >> ---
> >>  drivers/pci/controller/Kconfig       |   2 +-
> >>  drivers/pci/controller/pcie-xilinx.c | 238 +++++++++++----------------
> >>  2 files changed, 96 insertions(+), 144 deletions(-)
> > 
> > Michal,
> > 
> > can you please test these changes or make sure someone does and report
> > back on the mailing list please ?
> > 
> > I would like to merge this series for v5.13.
> 
> I got just private response (not sure why) from Bharat March 5 that
> changes are fine.
> It means go ahead with it.

Can I take this as a full Tested-by tag?

Thanks,

	M.

-- 
Without deviation from the norm, progress is not possible.