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| author | Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> | 2013-01-15 22:40:26 -0500 |
|---|---|---|
| committer | Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> | 2013-01-15 22:41:27 -0500 |
| commit | d55bf532d72b3cfdfe84e696ace995067324c96c (patch) | |
| tree | 8d4bc8b87dbbb92a16dbd92ce6ba266ff88293db /arch/x86/xen/smp.c | |
| parent | 1affa98d23c0188fdd4433512489be753a25bb23 (diff) | |
| download | linux-d55bf532d72b3cfdfe84e696ace995067324c96c.tar.gz linux-d55bf532d72b3cfdfe84e696ace995067324c96c.tar.bz2 linux-d55bf532d72b3cfdfe84e696ace995067324c96c.zip | |
Revert "xen/smp: Fix CPU online/offline bug triggering a BUG: scheduling while atomic."
This reverts commit 41bd956de3dfdc3a43708fe2e0c8096c69064a1e.
The fix is incorrect and not appropiate for the latest kernels.
In fact it _causes_ the BUG: scheduling while atomic while
doing vCPU hotplug.
Suggested-by: Wei Liu <wei.liu2@citrix.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Diffstat (limited to 'arch/x86/xen/smp.c')
| -rw-r--r-- | arch/x86/xen/smp.c | 7 |
1 files changed, 0 insertions, 7 deletions
diff --git a/arch/x86/xen/smp.c b/arch/x86/xen/smp.c index 4f7d2599b484..34bc4cee8887 100644 --- a/arch/x86/xen/smp.c +++ b/arch/x86/xen/smp.c @@ -432,13 +432,6 @@ static void __cpuinit xen_play_dead(void) /* used only with HOTPLUG_CPU */ play_dead_common(); HYPERVISOR_vcpu_op(VCPUOP_down, smp_processor_id(), NULL); cpu_bringup(); - /* - * Balance out the preempt calls - as we are running in cpu_idle - * loop which has been called at bootup from cpu_bringup_and_idle. - * The cpucpu_bringup_and_idle called cpu_bringup which made a - * preempt_disable() So this preempt_enable will balance it out. - */ - preempt_enable(); } #else /* !CONFIG_HOTPLUG_CPU */ |