diff options
Diffstat (limited to 'arch/x86/power/cpu.c')
| -rw-r--r-- | arch/x86/power/cpu.c | 13 |
1 files changed, 11 insertions, 2 deletions
diff --git a/arch/x86/power/cpu.c b/arch/x86/power/cpu.c index a7d966964c6f..24b079e94bc2 100644 --- a/arch/x86/power/cpu.c +++ b/arch/x86/power/cpu.c @@ -1,8 +1,7 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * Suspend support specific for i386/x86-64. * - * Distribute under GPLv2 - * * Copyright (c) 2007 Rafael J. Wysocki <rjw@sisk.pl> * Copyright (c) 2002 Pavel Machek <pavel@ucw.cz> * Copyright (c) 2001 Patrick Mochel <mochel@osdl.org> @@ -299,7 +298,17 @@ int hibernate_resume_nonboot_cpu_disable(void) * address in its instruction pointer may not be possible to resolve * any more at that point (the page tables used by it previously may * have been overwritten by hibernate image data). + * + * First, make sure that we wake up all the potentially disabled SMT + * threads which have been initially brought up and then put into + * mwait/cpuidle sleep. + * Those will be put to proper (not interfering with hibernation + * resume) sleep afterwards, and the resumed kernel will decide itself + * what to do with them. */ + ret = cpuhp_smt_enable(); + if (ret) + return ret; smp_ops.play_dead = resume_play_dead; ret = disable_nonboot_cpus(); smp_ops.play_dead = play_dead; |