3.16.57-rc1 review patch. If anyone has any objections, please let me know.
------------------
From: Ben Hutchings ben@decadent.org.uk
This is based on commit 2b953a5e994ce279904ec70220f7d4f31d380a0a upstream, "xen: Suspend ticks on all CPUs during suspend", but excluding the bug fix in that commit which is not needed in 3.16. We only need the xen_arch_suspend() hook for the following fix.
Cc: Boris Ostrovsky boris.ostrovsky@oracle.com Cc: David Vrabel david.vrabel@citrix.com Signed-off-by: Ben Hutchings ben@decadent.org.uk --- --- a/arch/x86/xen/suspend.c +++ b/arch/x86/xen/suspend.c @@ -91,8 +91,17 @@ static void xen_vcpu_notify_restore(void clockevents_notify(reason, NULL); }
+static void xen_vcpu_notify_suspend(void *data) +{ +} + void xen_arch_resume(void) { on_each_cpu(xen_vcpu_notify_restore, (void *)CLOCK_EVT_NOTIFY_RESUME, 1); } + +void xen_arch_suspend(void) +{ + on_each_cpu(xen_vcpu_notify_suspend, NULL, 1); +} --- a/drivers/xen/manage.c +++ b/drivers/xen/manage.c @@ -131,6 +131,8 @@ static void do_suspend(void) goto out_resume; }
+ xen_arch_suspend(); + si.cancelled = 1;
err = stop_machine(xen_suspend, &si, cpumask_of(0)); @@ -148,11 +150,12 @@ static void do_suspend(void) si.cancelled = 1; }
+ xen_arch_resume(); + out_resume: - if (!si.cancelled) { - xen_arch_resume(); + if (!si.cancelled) xs_resume(); - } else + else xs_suspend_cancel();
dpm_resume_end(si.cancelled ? PMSG_THAW : PMSG_RESTORE); --- a/include/xen/xen-ops.h +++ b/include/xen/xen-ops.h @@ -12,6 +12,7 @@ void xen_arch_post_suspend(int suspend_c
void xen_timer_resume(void); void xen_arch_resume(void); +void xen_arch_suspend(void);
void xen_resume_notifier_register(struct notifier_block *nb); void xen_resume_notifier_unregister(struct notifier_block *nb);