Messages in this thread | | | Date | Tue, 3 May 2022 07:04:56 -0700 | Subject | Re: [PATCH v2 00/48] ARM: PXA multiplatform support | From | Guenter Roeck <> |
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On 5/3/22 00:17, Arnd Bergmann wrote: > 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. >
Maybe it is a bit less; I only compared the size of "Image". Either case, it is enough to cause the problem. I am not sure if it is worth the time trying to track this down further.
Guenter
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