This reverts commit 70dd4998cb85f0ecd6ac892cc7232abefa432efb.
Now that the bugs have been resolved we can re-enable the
PV ticketlock implementation under PVHVM Xen guests.
Signed-off-by: Konrad Rzeszutek Wilk <konrad.w...@oracle.com>
---
arch/x86/xen/spinlock.c | 20 --------------------
1 files changed, 0 insertions(+), 20 deletions(-)
diff --git a/arch/x86/xen/spinlock.c b/arch/x86/xen/spinlock.c
index e1bff87..b3c1ee8 100644
--- a/arch/x86/xen/spinlock.c
+++ b/arch/x86/xen/spinlock.c
@@ -230,13 +230,6 @@ void xen_init_lock_cpu(int cpu)
WARN(per_cpu(lock_kicker_irq, cpu) >= 0, "spinlock on CPU%d exists on
IRQ%d!\n",
cpu, per_cpu(lock_kicker_irq, cpu));
- /*
- * See git commit f10cd522c5fbfec9ae3cc01967868c9c2401ed23
- * (xen: disable PV spinlocks on HVM)
- */
- if (xen_hvm_domain())
- return;
-
name = kasprintf(GFP_KERNEL, "spinlock%d", cpu);
irq = bind_ipi_to_irqhandler(XEN_SPIN_UNLOCK_VECTOR,
cpu,
@@ -256,13 +249,6 @@ void xen_init_lock_cpu(int cpu)
void xen_uninit_lock_cpu(int cpu)
{
- /*
- * See git commit f10cd522c5fbfec9ae3cc01967868c9c2401ed23
- * (xen: disable PV spinlocks on HVM)
- */
- if (xen_hvm_domain())
- return;
-
if (!xen_pvspin)
return;
@@ -275,12 +261,6 @@ void xen_uninit_lock_cpu(int cpu)
void __init xen_init_spinlocks(void)
{
- /*
- * See git commit f10cd522c5fbfec9ae3cc01967868c9c2401ed23
- * (xen: disable PV spinlocks on HVM)
- */
- if (xen_hvm_domain())
- return;
if (!xen_pvspin) {
printk(KERN_DEBUG "xen: PV spinlocks disabled\n");
--
1.7.7.6
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