On Fri, Dec 10, 2021 at 02:55:26PM +0800, Zhen Lei wrote: > @@ -518,7 +519,7 @@ static void __init reserve_crashkernel(void) > } > } > > - if (crash_base >= (1ULL << 32) && reserve_crashkernel_low()) { > + if (crash_base >= CRASH_ADDR_LOW_MAX && reserve_crashkernel_low()) { > memblock_phys_free(crash_base, crash_size); > return; > } That's not a equivalent transformation on X86_32. -- Regards/Gruss, Boris. https://people.kernel.org/tglx/notes-about-netiquette