linux-kernel - Re: [PATCH 02/13] PCI: rcar: Convert to MSI domains

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Date:   Sun, 28 Feb 2021 19:48:06 +0100
From:   Marek Vasut <marek.vasut@...il.com>
To:     Marc Zyngier <maz@...nel.org>,
        Lorenzo Pieralisi <lorenzo.pieralisi@....com>,
        Bjorn Helgaas <bhelgaas@...gle.com>
Cc:     Frank Wunderlich <frank-w@...lic-files.de>,
        Thierry Reding <treding@...dia.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Rob Herring <robh@...nel.org>, Will Deacon <will@...nel.org>,
        "K. Y. Srinivasan" <kys@...rosoft.com>,
        Haiyang Zhang <haiyangz@...rosoft.com>,
        Stephen Hemminger <sthemmin@...rosoft.com>,
        Wei Liu <wei.liu@...nel.org>,
        Thierry Reding <thierry.reding@...il.com>,
        Jonathan Hunter <jonathanh@...dia.com>,
        Ryder Lee <ryder.lee@...iatek.com>,
        Yoshihiro Shimoda <yoshihiro.shimoda.uh@...esas.com>,
        Michal Simek <michal.simek@...inx.com>,
        Paul Walmsley <paul.walmsley@...ive.com>,
        linux-pci@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-hyperv@...r.kernel.org,
        linux-tegra@...r.kernel.org, linux-mediatek@...ts.infradead.org,
        linux-renesas-soc@...r.kernel.org
Subject: Re: [PATCH 02/13] PCI: rcar: Convert to MSI domains

On 2/25/21 4:10 PM, Marc Zyngier wrote:
> In anticipation of the removal of the msi_controller structure, convert
> the Rcar 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 Rcar-specific and handling
> the actual HW interrupt allocation.
> 
> 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 msi structure instead.

On R8A7795 with Intel 600p NVMe SSD and IWLwifi 6235 card,
Tested-by: Marek Vasut <marek.vasut+renesas@...il.com>
Thanks.