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Groups > linux.kernel > #1359838
| From | Boris Ostrovsky <boris.ostrovsky@oracle.com> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | [PATCH 2/2] xen/x86: Call cpu_startup_entry(CPUHP_AP_ONLINE_IDLE) from xen_play_dead() |
| Date | 2016-03-17 14:10 +0100 |
| Message-ID | <rdFQC-7QE-23@gated-at.bofh.it> (permalink) |
| References | <rdFQB-7QE-1@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
This call has always been missing from xen_play dead() but until recently this was rather benign. With new cpu hotplug framework however this call is required, otherwise a hot-plugged CPU will not be properly brough up (by never calling cpuhp_online_idle()) Signed-off-by: Boris Ostrovsky <boris.ostrovsky@oracle.com> --- arch/x86/xen/smp.c | 2 ++ 1 files changed, 2 insertions(+), 0 deletions(-) diff --git a/arch/x86/xen/smp.c b/arch/x86/xen/smp.c index 3c6d17f..719cf29 100644 --- a/arch/x86/xen/smp.c +++ b/arch/x86/xen/smp.c @@ -545,6 +545,8 @@ static void xen_play_dead(void) /* used only with HOTPLUG_CPU */ * data back is to call: */ tick_nohz_idle_enter(); + + cpu_startup_entry(CPUHP_AP_ONLINE_IDLE); } #else /* !CONFIG_HOTPLUG_CPU */ -- 1.7.1
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[PATCH 0/2] Hotplug fixes Boris Ostrovsky <boris.ostrovsky@oracle.com> - 2016-03-17 14:10 +0100
[PATCH 1/2] xen/apic: Provide Xen-specific version of cpu_present_to_apicid APIC op Boris Ostrovsky <boris.ostrovsky@oracle.com> - 2016-03-17 14:10 +0100
[PATCH 2/2] xen/x86: Call cpu_startup_entry(CPUHP_AP_ONLINE_IDLE) from xen_play_dead() Boris Ostrovsky <boris.ostrovsky@oracle.com> - 2016-03-17 14:10 +0100
Re: [PATCH 2/2] xen/x86: Call cpu_startup_entry(CPUHP_AP_ONLINE_IDLE) from xen_play_dead() Boris Ostrovsky <boris.ostrovsky@oracle.com> - 2016-03-25 16:10 +0100
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