Hi Zi, On Thu, Dec 5, 2024 at 5:05 PM Zi Yan <ziy@xxxxxxxxxx> wrote: > Is it possible to run a 32bit kernel with HIGHMEM and > CONFIG_INIT_ON_ALLOC_DEFAULT_ON on the machine (of course with my patch > reverted)? Just to check my reasoning below. While I can boot 32-bit kernels, CPU_TX49XX and MACH_TX49XX do not select CPU_SUPPORTS_HIGHMEM resp. SYS_SUPPORTS_HIGHMEM, and thus HIGHMEM is not supported. Gr{oetje,eeting}s, Geert -- Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@xxxxxxxxxxxxxx In personal conversations with technical people, I call myself a hacker. But when I'm talking to journalists I just say "programmer" or something like that. -- Linus Torvalds