summaryrefslogtreecommitdiff
diff options
context:
space:
mode:
authorKonrad Rzeszutek Wilk <konrad.wilk@oracle.com>2013-08-26 22:28:50 +0400
committerKonrad Rzeszutek Wilk <konrad.wilk@oracle.com>2013-09-09 20:06:45 +0400
commitfb78e58c275599a961557bca201dd897565833ca (patch)
tree35c350aae49d3dfec694cd2c28f565b95bcfad77
parent3310bbedac497b793b96184e1b9b5da4f747d53a (diff)
downloadlinux-fb78e58c275599a961557bca201dd897565833ca.tar.xz
Revert "xen/spinlock: Disable IRQ spinlock (PV) allocation on PVHVM"
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.wilk@oracle.com> Reviewed-by: David Vrabel <david.vrabel@citrix.com>
-rw-r--r--arch/x86/xen/spinlock.c20
1 files changed, 0 insertions, 20 deletions
diff --git a/arch/x86/xen/spinlock.c b/arch/x86/xen/spinlock.c
index e1bff87766be..b3c1ee8f0993 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");