linux-kernel - Re: [PATCH v2 00/48] ARM: PXA multiplatform support

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Date:   Sat, 23 Apr 2022 00:04:31 +0200
From:   Arnd Bergmann <arnd@...nel.org>
To:     Guenter Roeck <linux@...ck-us.net>
Cc:     Robert Jarzmik <robert.jarzmik@...e.fr>,
        Linux ARM <linux-arm-kernel@...ts.infradead.org>,
        Arnd Bergmann <arnd@...db.de>, Daniel Mack <daniel@...que.org>,
        Haojian Zhuang <haojian.zhuang@...il.com>,
        Marek Vasut <marek.vasut@...il.com>,
        Philipp Zabel <philipp.zabel@...il.com>,
        Lubomir Rintel <lkundrak@...sk>,
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Subject: Re: [PATCH v2 00/48] ARM: PXA multiplatform support

On Fri, Apr 22, 2022 at 10:55 PM Guenter Roeck <linux@...ck-us.net> wrote:
> On 4/22/22 12:16, Arnd Bergmann wrote:
> > On Fri, Apr 22, 2022 at 7:05 PM Guenter Roeck <linux@...ck-us.net> wrote:
> >
> > Which machine did you hit this on? Is this on hardware or in qemu?
> >
> qemu, as always. borzoi, spitz, terrier, tosa, z2, and sx1 fail.
> Also, I just noticed that the failure is not always the same.
> z2 fails to boot from initrd, and sx1 fails to boot completely.

That's a lot of machines failing, I hope at least we got the same bugs more
than once here.

For the I/O space, I found now that PXA was not using the standard
virtual I/O address yet, but instead used a NULL-based offset.

I'm not entirely happy with this patch, but this is an outline of what
I think we need to fix that: https://pastebin.com/3nVgQsEw
This one is probably incomplete, at least it breaks sa1100 for now,
and it adds a bogus CONFIG_PCI dependency. I'm also not sure
in what way the last patch in the series triggers it, rather than the
one that removed mach/io.h.

I had sx1 booting in qemu at least, with the omap1 multiplatform series only.
If you have a custom config for this one, make sure you get the right
DEBUG_LL address.

> I'll do another round of bisects.

Thanks!

       Arnd