On Fri, Dec 17, 2021 at 10:51:04AM +0800, Leizhen (ThunderTown) wrote: > [KNL, X86-64], This doc is for X86-64, not for X86-32 reserve_crashkernel() runs on both. > If there is no such restriction, we can make CRASH_ADDR_LOW_MAX equal > to (1ULL << 32) minus 1 on X86_32. Again, the 4G limit check is relevant only for 64-bit kernels - not 32-bit ones. -- Regards/Gruss, Boris. https://people.kernel.org/tglx/notes-about-netiquette