2 * Copyright 2006 Michael Ellerman, IBM Corporation
4 * This program is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU General Public License
6 * as published by the Free Software Foundation; either version
7 * 2 of the License, or (at your option) any later version.
10 #include <linux/kernel.h>
11 #include <linux/interrupt.h>
13 #include <asm/machdep.h>
15 #include <asm/firmware.h>
16 #include <asm/kexec.h>
20 #include <asm/plpar_wrappers.h>
24 void pseries_kexec_cpu_down(int crash_shutdown, int secondary)
27 * Don't risk a hypervisor call if we're crashing
28 * XXX: Why? The hypervisor is not crashing. It might be better
29 * to at least attempt unregister to avoid the hypervisor stepping
32 if (firmware_has_feature(FW_FEATURE_SPLPAR) && !crash_shutdown) {
34 int cpu = smp_processor_id();
35 int hwcpu = hard_smp_processor_id();
37 if (get_lppaca()->dtl_enable_mask) {
38 ret = unregister_dtl(hwcpu);
40 pr_err("WARNING: DTL deregistration for cpu "
41 "%d (hw %d) failed with %d\n",
46 ret = unregister_slb_shadow(hwcpu);
48 pr_err("WARNING: SLB shadow buffer deregistration "
49 "for cpu %d (hw %d) failed with %d\n",
53 ret = unregister_vpa(hwcpu);
55 pr_err("WARNING: VPA deregistration for cpu %d "
56 "(hw %d) failed with %d\n", cpu, hwcpu, ret);
66 xics_kexec_teardown_cpu(secondary);