45 	 * Since we use the kernel fault handlers and paging code to  in default_machine_kexec_prepare()
46 	 * handle the virtual mode, we must make sure no destination  in default_machine_kexec_prepare()
53 	/* We also should not overwrite the tce tables */  in default_machine_kexec_prepare()
83 	 * We rely on kexec_load to create a lists that properly  in copy_segments()
85 	 * We will still crash if the list is wrong, but at least  in copy_segments()
117 	 * After this call we may not use anything allocated in dynamic  in kexec_copy_flush()
125 	 * we need to clear the icache for all dest pages sometime,  in kexec_copy_flush()
142 	mb(); /* make sure our irqs are disabled before we say they are */  in kexec_smp_down()
149 	 * Now every CPU has IRQs off, we can clear out any pending  in kexec_smp_down()
167 	/* Make sure each CPU has at least made it to the state we need.  in kexec_prepare_cpus_wait()
170 	 * are correctly onlined.  If somehow we start a CPU on boot with RTAS  in kexec_prepare_cpus_wait()
178 	 * survives that, we need to find these  in kexec_prepare_cpus_wait()
200  * We need to make sure each present CPU is online.  The next kernel will scan
202  * threads via RTAS to online them if required.  If we don't online primary
203  * threads, they will be stuck.  However, we also online secondary threads as we
207  * So, we online all CPUs that should be running, including secondary threads.
229 	mb(); /* make sure IRQs are disabled before we say they are */  in kexec_prepare_cpus()
233 	/* we are sure every CPU has IRQs off at this point */  in kexec_prepare_cpus()
242 	/* after we tell the others to go down */  in kexec_prepare_cpus()
254 	 * move the secondarys to us so that we can copy  in kexec_prepare_cpus()
259 	 * We need to release the cpus if we are ever going from an  in kexec_prepare_cpus()
274  * We need to make sure that this is 16384-byte aligned due to the
277  * overwritten when we copy the kexec image.  We piggyback on the
280  * We could use a smaller stack if we don't care about anything using
288  * static PACA; we switch to kexec_paca.
319 	 * We setup preempt_count to avoid using VMX in memcpy.  in default_machine_kexec()
320 	 * XXX: the task struct will likely be invalid once we do the copy!  in default_machine_kexec()
325 	/* We need a static PACA, too; copy this CPU's PACA over and switch to  in default_machine_kexec()
348 	 * unregistered so there is not much we can do about it here.  in default_machine_kexec()
352 	 * On Book3S, the copy must happen with the MMU off if we are either  in default_machine_kexec()
353 	 * using Radix page tables or we are not in an LPAR since we can  in default_machine_kexec()
356 	 * In an LPAR, we keep the MMU on otherwise we can't access beyond  in default_machine_kexec()
357 	 * the RMA. On BookE there is no real MMU off mode, so we have to  in default_machine_kexec()
358 	 * keep it enabled as well (but then we have bolted TLB entries).  in default_machine_kexec()
369 	 * a toc is easier in C, so pass in what we can.  in default_machine_kexec()
378 /* Values we need to export to the second kernel via the device tree. */