Some architectures, including x86 and ppc64, require a small fixed-position portion of RAM to boot a kernel regardless of where it is loaded; in this case, kexec creates a copy of that portion of RAM so it is also accessible to the dump-capture kernel.
某些架构（包括x86和ppc64）需要RAM的一个小的固定位置部分来引导内核，而不管它在哪里加载；在这种情况下，kexec会创建该部分RAM的副本，以便转储捕获内核也可以访问它。