| Message ID | 1470302117-32296-5-git-send-email-mbrugger@suse.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
diff --git a/arch/arm64/kernel/hibernate.c b/arch/arm64/kernel/hibernate.c index 21ab5df..7269642 100644 --- a/arch/arm64/kernel/hibernate.c +++ b/arch/arm64/kernel/hibernate.c @@ -481,6 +481,11 @@ static int check_boot_cpu_online_pm_callback(struct notifier_block *nb, static int __init check_boot_cpu_online_init(void) { + if (cpus_have_cap(ARM64_HAS_NO_BCAST_TLBI)) { + pr_err("Can't hibernate: missing broadcast TLBI support.\n"); + return -EINVAL; + } + /* * Set this pm_notifier callback with a lower priority than * cpu_hotplug_pm_callback, so that cpu_hotplug_pm_callback will be
Hibernation makes use of broadcast TLBI. Error out early when this is not supported by the hardware. Signed-off-by: Matthias Brugger <mbrugger@suse.com> --- arch/arm64/kernel/hibernate.c | 5 +++++ 1 file changed, 5 insertions(+)