Messages in this thread | | | From | Arnd Bergmann <> | Date | Tue, 3 May 2022 09:17:20 +0200 | Subject | Re: [PATCH v2 00/48] ARM: PXA multiplatform support |
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On Tue, May 3, 2022 at 4:55 AM Guenter Roeck <linux@roeck-us.net> wrote: > On 5/2/22 14:03, Arnd Bergmann wrote: > > On Mon, May 2, 2022 at 10:35 PM Guenter Roeck <linux@roeck-us.net> wrote: > >> On 5/2/22 12:21, Arnd Bergmann wrote: > > qemu puts initrd in the middle of available memory. With the image size > being ~1MB larger than with v5.18-rc, this is too much, and the kernel > overwrites part of initrd. This causes it to be corrupted. > > It looks like that would have happened eventually, your patch series just > made it happen now. The kernel is just getting too large to run on such small > systems. I worked around the problem in my version of qemu by loading initrd > at the end of the (small) RAM. With that, I no longer see the boot failure.
Ok, thanks for confirming. If it's just the image size that changed, then I think we can live with it. Having the kernel image grow by 1MB seems excessive though, I'd like to understand better where that increase comes from.
Starting out from pxa_defconfig, I see a 40KB increase from the final patch that moves to multiplatform support, which I think is fine.
If you have a z2 specific config, that would probably not enable CONFIG_OF, which is always turned on for multiplatform, but again that only adds around 250KB in my builds (using gcc-11). This is more than I'd like it to be, but still much less than 1MB.
Arnd
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