diff options
Diffstat (limited to 'arch/powerpc/platforms/pseries/mobility.c')
| -rw-r--r-- | arch/powerpc/platforms/pseries/mobility.c | 24 |
1 files changed, 20 insertions, 4 deletions
diff --git a/arch/powerpc/platforms/pseries/mobility.c b/arch/powerpc/platforms/pseries/mobility.c index 88925f8ca8a0..fe812bebdf5e 100644 --- a/arch/powerpc/platforms/pseries/mobility.c +++ b/arch/powerpc/platforms/pseries/mobility.c @@ -1,14 +1,12 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * Support for Partition Mobility/Migration * * Copyright (C) 2010 Nathan Fontenot * Copyright (C) 2010 IBM Corporation - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License version - * 2 as published by the Free Software Foundation. */ +#include <linux/cpu.h> #include <linux/kernel.h> #include <linux/kobject.h> #include <linux/smp.h> @@ -22,6 +20,7 @@ #include <asm/machdep.h> #include <asm/rtas.h> #include "pseries.h" +#include "../../kernel/cacheinfo.h" static struct kobject *mobility_kobj; @@ -338,11 +337,28 @@ void post_mobility_fixup(void) if (rc) printk(KERN_ERR "Post-mobility activate-fw failed: %d\n", rc); + /* + * We don't want CPUs to go online/offline while the device + * tree is being updated. + */ + cpus_read_lock(); + + /* + * It's common for the destination firmware to replace cache + * nodes. Release all of the cacheinfo hierarchy's references + * before updating the device tree. + */ + cacheinfo_teardown(); + rc = pseries_devicetree_update(MIGRATION_SCOPE); if (rc) printk(KERN_ERR "Post-mobility device tree update " "failed: %d\n", rc); + cacheinfo_rebuild(); + + cpus_read_unlock(); + /* Possibly switch to a new RFI flush type */ pseries_setup_rfi_flush(); |