On Tue, May 05, 2020 at 06:06:22PM -0700, Guenter Roeck wrote:
> Hi,
>
> please consider applying commit dead1c845dbe ("powerpc/pci/of: Parse unassigned resources")
> to v4.19.y and older stable branches.
>
> When testing qemu v5.0 in my build system, I noticed that I can no longer boot pseries
> images from sdhci/mmc with v4.19.y and older kernels. When tracking this down, I found
> that the devicetree structure passed to the kernel has changed in qemu v5.0. Specifically,
> there is no assigned-addresses property anymore, and the devicetree structure looks
> more like a generic devicetree structure.
> As it turns out, that change has been addressed in the Linux kernel with commit
> dead1c845dbe ("powerpc/pci/of: Parse unassigned resources"). After applying this commit
> to v3.16.y..v4.19.y, the problem is fixed.
>
> I could work around the problem by using qemu 4.2 for older kernel branches, but
> I would prefer to run a single qemu version for all branches if possible.
Now queued up, thanks.
greg k-h
