linux-kernel - Re: [PATCHv9 00/12] PCI: Recode Mobiveil driver and add PCIe Gen4 driver for NXP Layerscape SoCs

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Date:   Mon, 10 Feb 2020 16:28:23 +0100
From:   Olof Johansson <olof@...om.net>
To:     Russell King - ARM Linux admin <linux@...linux.org.uk>
Cc:     "Z.q. Hou" <zhiqiang.hou@....com>,
        "bhelgaas@...gle.com" <bhelgaas@...gle.com>,
        "mark.rutland@....com" <mark.rutland@....com>,
        "devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
        Lorenzo Pieralisi <lorenzo.pieralisi@....com>,
        "m.karthikeyan@...iveil.co.in" <m.karthikeyan@...iveil.co.in>,
        "arnd@...db.de" <arnd@...db.de>,
        "linux-pci@...r.kernel.org" <linux-pci@...r.kernel.org>,
        "l.subrahmanya@...iveil.co.in" <l.subrahmanya@...iveil.co.in>,
        "will.deacon@....com" <will.deacon@....com>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        Leo Li <leoyang.li@....com>,
        "M.h. Lian" <minghuan.lian@....com>,
        "robh+dt@...nel.org" <robh+dt@...nel.org>,
        Mingkai Hu <mingkai.hu@....com>,
        "catalin.marinas@....com" <catalin.marinas@....com>,
        Xiaowei Bao <xiaowei.bao@....com>,
        "andrew.murray@....com" <andrew.murray@....com>,
        "shawnguo@...nel.org" <shawnguo@...nel.org>,
        "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>
Subject: Re: [PATCHv9 00/12] PCI: Recode Mobiveil driver and add PCIe Gen4
 driver for NXP Layerscape SoCs

On Mon, Feb 10, 2020 at 4:23 PM Russell King - ARM Linux admin
<linux@...linux.org.uk> wrote:
>
> On Mon, Feb 10, 2020 at 04:12:30PM +0100, Olof Johansson wrote:
> > On Thu, Feb 6, 2020 at 11:57 AM Z.q. Hou <zhiqiang.hou@....com> wrote:
> > >
> > > Hi Olof,
> > >
> > > Thanks a lot for your comments!
> > > And sorry for my delay respond!
> >
> > Actually, they apply with only minor conflicts on top of current -next.
> >
> > Bjorn, any chance we can get you to pick these up pretty soon? They
> > enable full use of a promising ARM developer system, the SolidRun
> > HoneyComb, and would be quite valuable for me and others to be able to
> > use with mainline or -next without any additional patches applied --
> > which this patchset achieves.
> >
> > I know there are pending revisions based on feedback. I'll leave it up
> > to you and others to determine if that can be done with incremental
> > patches on top, or if it should be fixed before the initial patchset
> > is applied. But all in all, it's holding up adaption by me and surely
> > others of a very interesting platform -- I'm looking to replace my
> > aging MacchiatoBin with one of these and would need PCIe/NVMe to work
> > before I do.
>
> If you're going to be using NVMe, make sure you use a power-fail safe
> version; I've already had one instance where ext4 failed to mount
> because of a corrupted journal using an XPG SX8200 after the Honeycomb
> Serror'd, and then I powered it down after a few hours before later
> booting it back up.
>
> EXT4-fs (nvme0n1p2): INFO: recovery required on readonly filesystem
> EXT4-fs (nvme0n1p2): write access will be enabled during recovery
> JBD2: journal transaction 80849 on nvme0n1p2-8 is corrupt.
> EXT4-fs (nvme0n1p2): error loading journal

Hmm, using btrfs on mine, not sure if the exposure is similar or not.

Do you know if the SErr was due to a known issue and/or if it's
something that's fixed in production silicon?

(I still can't enable SMMU since across a warm reboot it fails
*completely*, with nothing coming up and working. NXP folks, you
listening? :)


-Olof